origins of agg in fsw 5083 - li group...
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![Page 1: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/1.jpg)
Origins of AGG in FSW 5083 1Wagoner & Chen
Origins of AGG in FSW 5083
Project Summary
Robert H. Wagoner, ProfessorKe Chen, Graduate Research Associate
Department of Materials Science and EngineeringThe Ohio State University
March 1, 2007
![Page 2: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/2.jpg)
Origins of AGG in FSW 5083 2Wagoner & Chen
• New OSU Results
• New SNU Results
• Unchanged OSU Results
Organization
![Page 3: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/3.jpg)
Origins of AGG in FSW 5083 3Wagoner & Chen
• Grain size and second phase particles
• Misorientation angle
• Elevated Temperature Tensile Test
New OSU Results
![Page 4: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/4.jpg)
Origins of AGG in FSW 5083 4Wagoner & Chen
• Magnification on the OIM was wrong, therefore the grain sizes were not correctly measured
• The step size and scan area were made consistent at 0.2 and 50*50μm2 respectively for comparison
• Expected phases were entered in OIM to resolve particles – Al, MnAl6 (or FeAl6), (CrFe)Al7, Mg2Al3, SiMg2, and Al2O3
Corrections Since Oct 2006
![Page 5: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/5.jpg)
Origins of AGG in FSW 5083 5Wagoner & Chen
1000, 100
1000, 150
1000, 200
1000, 300
1500, 150
1500, 225
1500, 300
1500, 450
[rpm], [mm/min]
RotationalSpeed
Travel Speed
As received
1 minute at 870F
2.5 minute
5 minute
10 minute
20 minute
1 hour
2 hours
1000rpm*100mm/min
Grain Morphologies after Heat Treatment
AGG vs. Weld Condition AGG vs. Time
![Page 6: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/6.jpg)
Origins of AGG in FSW 5083 6Wagoner & Chen
Heat Input Plot
800
1000
1200
1400
1600
1800
0 100 200 300 400 500Travel Speed (mm/min)
Rot
atio
nal S
peed
(rpm
)
Heat Input
High
Low
Most AGG
Least AGG
Optimized
![Page 7: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/7.jpg)
Origins of AGG in FSW 5083 7Wagoner & Chen
Sample Overview
Least AGG
Most AGG
Optimized Condition
• Heating at 465 ℃ for 5 min
![Page 8: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/8.jpg)
Origins of AGG in FSW 5083 8Wagoner & Chen
Least AGG Condition
1A_T (TOP, AGG)
Step Size: 1μm
G.S. ~ 5000μm2
G.S. ~ 3.2μm2
Non-AGGed Region
AGGed Region
![Page 9: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/9.jpg)
Origins of AGG in FSW 5083 9Wagoner & Chen
Conversion between Area of Average Grain and Spherical Grain Size
• Area of Average Grain is designated Aavg
• Intercept width of a circular grain section: lavg = (π*Aavg/4)0.5
• Two ways to convert the Intercept width to volumetric (spatial) diameter
– Assume grains are similar size spheres: Davg = 1.5*lavg
– Assume grains are tetrakaidecahedron-shaped: Davg = 1.571*lavg
![Page 10: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/10.jpg)
Origins of AGG in FSW 5083 10Wagoner & Chen
Data Summary Form
![Page 11: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/11.jpg)
Origins of AGG in FSW 5083 11Wagoner & Chen
Phase Map Table
Least AGG Most AGG Optimized
1B_M (MID) 3B_M (MID)AGG
2B_T (TOP) AGG
2B_M (MID)Non-AGG Non-AGG
3B_T (TOP) AGG1B_T (TOP) AGG
![Page 12: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/12.jpg)
Origins of AGG in FSW 5083 12Wagoner & Chen
Step Size: 0.2μmAA5083-H18 Base Material AA5083-O Base MaterialG.S. > 3.68μm2 G.S. = 7.28μm2
Phase Maps
![Page 13: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/13.jpg)
Origins of AGG in FSW 5083 13Wagoner & Chen
Least AGG Condition
Step Size: 0.2μm1B_T (TOP, AGG) 1B_M (MID, NO-AGG)G.S. = 4.54μm2G.S. = 2.66μm2
![Page 14: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/14.jpg)
Origins of AGG in FSW 5083 14Wagoner & Chen
Most AGG Condition
Step Size: 0.2μm 2B_M (MID, AGG)2B_T (TOP, AGG)G.S. = 1.94μm2 G.S. = 3.23μm2
![Page 15: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/15.jpg)
Origins of AGG in FSW 5083 15Wagoner & Chen
3B_T (TOP, AGG)
Optimized Condition
Step Size: 0.2μm 3B_M (MID, NO-AGG)G.S. = 4.07μm2G.S. = 2.28μm2
![Page 16: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/16.jpg)
Origins of AGG in FSW 5083 16Wagoner & Chen
Optimized Condition
Step Size: 0.2μm 3A_M (MID, NO-AGG)G.S. = 4.19μm2G.S. = 4.07μm2
3B_M (MID, NO-AGG)
![Page 17: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/17.jpg)
Origins of AGG in FSW 5083 17Wagoner & Chen
Comparison Between Most AGG Site and Least AGG Site
2B_M (MID, AGG) 1B_M (MID, NO-AGG)
Most AGG Least AGG
G.S. = 3.28μm2 G.S. = 4.54μm2
![Page 18: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/18.jpg)
Origins of AGG in FSW 5083 18Wagoner & Chen
Optimized Condition
Step Size: 0.2μm
3A_M (MID, NO-AGG)G.S. = 4.19μm2
3A_Top (TOP, AGG)
Step Size: 0.05μm
G.S. = 0.38μm2
G.S. ~ 5000μm2
Very close to top surface
AGGed Region
![Page 19: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/19.jpg)
Origins of AGG in FSW 5083 19Wagoner & Chen
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10
Gra in P lana r Dia me te r (mic ron)
Grain Size DistributionLeast AGG Condition
Avg GS (μm2)
1B_T(TOP AGG)
2.66
1B_M(MID Non-AGG)
4.54
![Page 20: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/20.jpg)
Origins of AGG in FSW 5083 20Wagoner & Chen
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5
Grain Planar Diameter (micron)
Num
ber F
ract
ion
Most AGG Condition
Avg GS (μm2)
2B_T(TOP AGG)
1.94
2B_M(MID AGG)
3.23
![Page 21: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/21.jpg)
Origins of AGG in FSW 5083 21Wagoner & Chen
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5
Grain Planar Diameter (Micron)
Num
ber F
ract
ion
Optimized Condition
Avg GS (μm2)
3B_T(TOP AGG)
2.28
3B_M(MID Non-AGG)
4.07
![Page 22: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/22.jpg)
Origins of AGG in FSW 5083 22Wagoner & Chen
Boundary Misorientation Angle
0
1
2
3
4
0 10 20 30 40 50 60 70Misorientation (o)
Freq
uenc
y (%
)
The mean boundary misorientation would be 40.5o (Mackenzie, 1985)
Misorientation Distribution for a Randomly Oriented Assembly of Grains
![Page 23: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/23.jpg)
Origins of AGG in FSW 5083 23Wagoner & Chen
Optimized Condition
3B_T (TOP) 3B_M (MIDDLE)
With boundaries between identified grainsOnly grain boundaries which have misorientation > 5o will be counted in
Mean = 34.96° Mean = 37.69°
![Page 24: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/24.jpg)
Origins of AGG in FSW 5083 24Wagoner & Chen
Most AGG Condition
2B_M (MIDDLE)2B_T (TOP, AGG)
With boundaries between identified grainsOnly grain boundaries which have misorientation > 5o will be counted in
Mean = 35.82° Mean = 37.92°
![Page 25: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/25.jpg)
Origins of AGG in FSW 5083 25Wagoner & Chen
Least AGG Condition
1B_T (TOP) 1B_M (MIDDLE)
With boundaries between identified grainsOnly grain boundaries which have misorientation > 5o will be counted in
Mean = 34.12° Mean = 37.28°
![Page 26: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/26.jpg)
Origins of AGG in FSW 5083 26Wagoner & Chen
Stress vs. Strain, Strain Rate, and Temperature
• AA5083-H18• AA5083-O• AZ31 Mg
![Page 27: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/27.jpg)
Origins of AGG in FSW 5083 27Wagoner & Chen
5083 H18 at True Strain Rate=10^(-1)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Str
ess
(MP
a) RT100C200C300C400C
5083-H18 at True Strain Rate=10^(-2.5)/s
0
50
100
150
200
250
300
350
400
450
500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
RT100C200C300C400C
AA5083-H18
5083-H18 at True Strain Rate=10^(-4)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Str
ess
(MP
a)
RT100C200C300C
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Origins of AGG in FSW 5083 28Wagoner & Chen
AA5083-O
5083O at True Strain Rate=10^(-1)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Stre
ss (M
Pa)
RT100C200C300C400C
5083O at True Strain Rate=10^(-2.5)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Stre
ss (M
Pa)
RT100C200C300C400C
5083_O at True Strain Rate=10^(-4)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Stre
ss (M
Pa)
RT100C200C300C
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Origins of AGG in FSW 5083 29Wagoner & Chen
AZ31 Mg
AZ31B at True Strain Rate=10^(-1)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Str
ess
(MPa
)
RT100C200C300C400C
AZ31B at Strain Rate=10^(-2.5)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Stre
ss (M
Pa)
RT100C200C300C400C
AZ31B at True Strain Rate=10^(-4)/s
050
100150200250300350400450500
0 0.1 0.2 0.3 0.4 0.5 0.6
True Strain
True
Tre
ss (M
Pa)
RT100C200C300C
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Origins of AGG in FSW 5083 30Wagoner & Chen
Conclusions
• Abnormal grain growth rate is affected by more than one factor: grain size, dislocation content, grain boundary misorientation, grain size distribution, and particle fraction
• Regions close to the top surface with small grains and relatively higher dislocation density promote AGG
• FSW regions are not well recrystallized. They are either textured or deformed
• Higher angle grain boundaries favor grain growth
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Origins of AGG in FSW 5083 31Wagoner & Chen
Future Work
• With the data from SNU, find the FSW Temp- Time correlation
• Use EDAX in TEM to find the intermetallic phases
• Analyze the grain size distribution
![Page 32: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/32.jpg)
Origins of AGG in FSW 5083 32Wagoner & Chen
New SNU Results
![Page 33: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/33.jpg)
Origins of AGG in FSW 5083 33Wagoner & Chen
ResultsTemperature History (sensor) : AA5083-H18
Advancing side Retreating side
Experiment 525 420 300 480 400 300
Experiment 460 400 205 ∙ ∙ ∙
Experiment 530 450 262 ∙ ∙ ∙
Property 1 535 462 302 534 438 288
Property 2 514 494 328 511 474 315
1000rpm & 100mm/min
1000rpm & 300mm/min
1500rpm & 150mm/min
2mm 5mm 8mm 2mm 5mm 8mm
Property 1 496 426 253 491 399 240
Property 2 470 440 261 465 412 248
Property 1 569 506 320 568 474 303
Property 2 573 517 327 572 495 315
Temperature peaks (Temperature peaks (℃℃))
![Page 34: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/34.jpg)
Origins of AGG in FSW 5083 34Wagoner & Chen
ResultsTemperature History (sensor) : Property 1
Measured
Calculated
1000rpm*100mm/min Optimized Condition
1000rpm*300mm/min Most AGG Condition
1500rpm*150mm/min Least AGG Condition
![Page 35: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/35.jpg)
Origins of AGG in FSW 5083 35Wagoner & Chen
ResultsTemperature History (sensor) : Property 1
Measured
Calculated
1000rpm*100mm/min Optimized Condition
1000rpm*300mm/min Most AGG Condition
1500rpm*150mm/min Least AGG Condition
![Page 36: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/36.jpg)
Origins of AGG in FSW 5083 36Wagoner & Chen
ResultsTemperature History (sensor) : Property 2
Measured
Calculated
1000rpm*100mm/min Optimized Condition
1000rpm*300mm/min Most AGG Condition
1500rpm*150mm/min Least AGG Condition
![Page 37: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/37.jpg)
Origins of AGG in FSW 5083 37Wagoner & Chen
ResultsTemperature History (sensor) : Property 2
Measured
Calculated
1000rpm*100mm/min Optimized Condition
1000rpm*300mm/min Most AGG Condition
1500rpm*150mm/min Least AGG Condition
![Page 38: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/38.jpg)
Origins of AGG in FSW 5083 38Wagoner & Chen
Accumulated Effective Strain (Material)
Property 1
Property 2
1000rpm*100mm/min Optimized Condition
1000rpm*300mm/min Most AGG Condition
1500rpm*150mm/min Least AGG Condition
![Page 39: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/39.jpg)
Origins of AGG in FSW 5083 39Wagoner & Chen
Temperature History (Material)
1000rpm*100mm/min Optimized Condition
1000rpm*300mm/min Most AGG Condition
1500rpm*150mm/min Least AGG Condition
Property 1
Property 2
![Page 40: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/40.jpg)
Origins of AGG in FSW 5083 40Wagoner & Chen
Question for the Simulation
• Is that ok to use different materials properties for different welding conditions
• Why the accumulated effective strains are so different for different simulation properties? And which one is more accurate?
• For both properties, the temperature gaps for bottom and top region are very small
![Page 41: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/41.jpg)
Origins of AGG in FSW 5083 41Wagoner & Chen
Unchanged OSU Results
![Page 42: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/42.jpg)
Origins of AGG in FSW 5083 42Wagoner & Chen
Micro-Hardness Comparison
BottomTop
5083-H18 Before Heat-treatment
• Use data without Min&Max
70
80
90
100
0 0.5 1 1.5
Most AGG (300mm/min*1000rpm)Least AGG (150mm/min*1500rpm)Optimized (100mm/min*1000rpm)
Hv
Distance From Top Surface (mm)
![Page 43: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/43.jpg)
Origins of AGG in FSW 5083 43Wagoner & Chen
5083-H18 After Heat-treatment
70
80
90
100
0 0.5 1 1.5
Most AGG (300mm/min*1000rpm)Least AGG (150mm/min*1500rpm)Optimized (100mm/min*1000rpm)
Hv
Distance From Top Surface (cm)
BottomTop
• Use data without Min&Max
![Page 44: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/44.jpg)
Origins of AGG in FSW 5083 44Wagoner & Chen
5083-O Before Heat-treatmentMicro-Hardness Comparison
70
80
90
100
-20 -15 -10 -5 0 5 10 15 20
Hv value - 100mm/min*1500rpmHv value - 300mm/min*1000rpm
Hv
Distance From Weld Centerline (mm)
![Page 45: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/45.jpg)
Origins of AGG in FSW 5083 45Wagoner & Chen
AA5083 Micro-Hardness Comparison
![Page 46: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/46.jpg)
Origins of AGG in FSW 5083 46Wagoner & Chen
Materials Received from Hitachi/GMI – Materials received for the current GM project
![Page 47: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/47.jpg)
Origins of AGG in FSW 5083 47Wagoner & Chen
II – Materials received for the previous GM project•There is no detailed material description sheet/form I can find for these packages, so I just recorded as much information as I can find for each of them. They were received in or before 2005.
![Page 48: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/48.jpg)
Origins of AGG in FSW 5083 48Wagoner & Chen
Thank you !
![Page 49: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/49.jpg)
Origins of AGG in FSW 5083 49Wagoner & Chen
50g, 15s load
Indentation size: ~ 33*33um2
5083-H18 Before Heat-treatment
![Page 50: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/50.jpg)
Origins of AGG in FSW 5083 50Wagoner & Chen
5083-H18 Optimized (100mm/min*1000rpm)Before Heat-treatment
BottomTop
• Use data without Min&Max
70
80
90
100
0 0.5 1 1.5
Avg. of Tot.Avg. Without Min&Max
Hv
Distance From Top Surface
![Page 51: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/51.jpg)
Origins of AGG in FSW 5083 51Wagoner & Chen
50g, 15s load
Indentation size: ~ 32*32um2
![Page 52: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/52.jpg)
Origins of AGG in FSW 5083 52Wagoner & Chen
5083-H18 Most AGG (300mm/min*1000rpm)Before Heat-treatment
BottomTop
• Use data without Min&Max
70
80
90
100
0 0.5 1 1.5
Avg. of Tot.Avg. Without Min&Max
Distance From Top Surface
Hv
![Page 53: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/53.jpg)
Origins of AGG in FSW 5083 53Wagoner & Chen
50g, 15s load
Indentation size: ~ 33*33um2
![Page 54: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/54.jpg)
Origins of AGG in FSW 5083 54Wagoner & Chen
5083-H18 Least AGG (150mm/min*1500rpm)Before Heat-treatment
BottomTop
• Use data without Min&Max
70
80
90
100
0 0.5 1 1.5
Avg. of Tot.Avg. Without Min&Max
Distance From Top Surface
Hv
![Page 55: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/55.jpg)
Origins of AGG in FSW 5083 55Wagoner & Chen
Sample Surface Blistering After Heat-treatment
Heat-treatment condition: 465 Co, 5 min
5083-H18 – No-Blistering
Optimized condition1000rpm * 100mm/min
Least AGG condition1500rpm * 150mm/min
Most AGG condition1000rpm, 300mm/min
![Page 56: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/56.jpg)
Origins of AGG in FSW 5083 56Wagoner & Chen
5083-O – Blistering
1500rpm,100mm/min 1000rpm, 300mm/min Heat-treatment condition: 465 Co, 5 min
a
b
a
ba,b – Heat treated separately
under same condition.a is much worse than b.
a,b – Heat treated separatelyunder same condition.Both blistered badly.
BlisteringBlistering
Blistering Blistering
![Page 57: Origins of AGG in FSW 5083 - Li Group 李巨小组li.mit.edu/Stuff/RHW/Upload/GM-FSW-viewg3-07.pdf · Wagoner & Chen Origins of AGG in FSW 5083 5 1000, 100 1000, 150 1000, 200 1000,](https://reader030.vdocuments.us/reader030/viewer/2022040711/5e148ad06a074c37c41db872/html5/thumbnails/57.jpg)
Origins of AGG in FSW 5083 57Wagoner & Chen
5083-O 1000rpm,300mm/minHeat-treatment condition: 465 Co, 5 min
a
b
c
d