nist project class report
TRANSCRIPT
![Page 1: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/1.jpg)
Quantifying microstructural features in aging process
of Al6061
Ali KhosravaniJordan Weaver
![Page 2: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/2.jpg)
Project Goal:Extract Microstructure-Property-Process linkages in aging of Al6061 aluminum alloy through multi model experimental methods
Mechanical testing: • Tensile testing • Spherical indentation
Microscopy technique:• SEM• EBSD• OM
![Page 3: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/3.jpg)
• Al6061 application• Aging process• Mechanical Properties
![Page 4: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/4.jpg)
Salient Microstructural Features
• Grain size, shape, and texture
• Constituent particle size,
volume fraction, distribution,
and spacing
• Precipitate size, volume
fraction, and spacing
![Page 5: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/5.jpg)
Grain Size, Shape, and TextureInverse pole figure mapAn inverse pole figure shows the position of a sample direction relative to the crystal reference frame. In terms of IPF map in EBSD, each color represent three euler angle that transform the sample frame to the crystal frame.
As-received sample
![Page 6: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/6.jpg)
Grain size distribution
Grain size distribution is calculated based on equivalent diameter values. The equivalent diameter is the diameter of a circle that gives the same area as the one for that grain.
D
![Page 7: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/7.jpg)
As-received sample
![Page 8: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/8.jpg)
Aged at 400F for 2 hrs
![Page 9: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/9.jpg)
Aged at 525F for 2 hrs
![Page 10: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/10.jpg)
Aged at 650F for 2 hrs
![Page 11: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/11.jpg)
Aged at 775F for 2 hrs
![Page 12: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/12.jpg)
Grain aspect ratio distribution
One measure of the shape of grains in EBSD scan is the aspect ratio. The aspect ratio is defined as the length of the minor axis divided by the length of the major axis and thus ranges from 0 to 1
a b
Grain aspect ratio =
![Page 13: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/13.jpg)
As-received sample
![Page 14: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/14.jpg)
Aged at 400F for 2 hrs
![Page 15: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/15.jpg)
Aged at 525F for 2 hrs
![Page 16: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/16.jpg)
Aged at 650F for 2 hrs
![Page 17: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/17.jpg)
Aged at 775F for 2 hrs
![Page 18: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/18.jpg)
TextureThe full 3D representation of crystallographic texture is given by the orientation distribution function (ODF). The ODF is defined as the volume fraction of grains with a certain orientation g.
![Page 19: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/19.jpg)
As-r
ecei
ved
sam
ple
![Page 20: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/20.jpg)
Aged
at 4
00F
for 2
hrs
![Page 21: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/21.jpg)
Aged
at 5
25F
for 2
hrs
![Page 22: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/22.jpg)
Aged
at 6
50F
for 2
hrs
![Page 23: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/23.jpg)
Aged
at 7
75F
for 2
hrs
![Page 24: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/24.jpg)
Constituent particle size, volume fraction, distribution, and spacing
![Page 25: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/25.jpg)
Image Segmentation
![Page 26: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/26.jpg)
Original Image Corrected Image Segmented Image
400
775
![Page 27: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/27.jpg)
AR 400F 525F 650F 775FImage 1 0.032904 0.041857 0.036041 0.051641 0.097341Image 2 0.023965 0.043686 0.035519 0.060976 0.103627Image 3 0.024079 0.040578 0.031837 0.054671 0.111044Image 4 0.027179 0.039005 0.045656 0.054723 0.092842Image 5 0.027323 0.041474 0.036051 0.054555 0.106871Image 6 0.024258 0.038561 0.034232 0.057636 0.106811Image 7 0.028309 0.036217 0.028897 0.054658 0.089563Image 8 0.021637 0.03788 0.029157 0.058748 0.084825Image 9 0.026702 0.035803 0.099341 0.104465Image 10 0.020928 0.041351 0.046461 0.089996Average 0.025728 0.039641 0.034674 0.059341 0.098739
Volume fraction- Constituent particle
![Page 28: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/28.jpg)
0 50 100 150 200 250 300 350 400 450 5000
1
2
3
x 10-4
Number of Pixels
Fre
que
ncy
AR
400 F
525 F
650 F
775 F
Particle Spacing- Chord length on matrix
![Page 29: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/29.jpg)
-2 -1.5 -1 -0.5 0 0.5 1
x 10-3
-12
-10
-8
-6
-4
-2
0
2
4x 10
-4
PC 1
PC
2
AR400 F525 F650 F775 F
-2 -1.5 -1 -0.5 0 0.5 1
x 10-3
-1.5
-1
-0.5
0
0.5
1
1.5
2x 10
-4
PC 1
PC
3
PCA on Chord Length
![Page 30: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/30.jpg)
-30 -20 -10 0 10 20 30 40 50-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
PC 1
PC
2
AR400 F525 F650 F775 F
-30 -20 -10 0 10 20 30 40 50-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
PC 1
PC
3
PCA on 2 point Stats
![Page 31: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/31.jpg)
PCA on 2 point Stats + Chord Length-50 -40 -30 -20 -10 0 10 20 30
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
PC 1
PC
2
-50 -40 -30 -20 -10 0 10 20 30-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
PC 1
PC
3
AR400 F525 F650 F775 F
![Page 32: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/32.jpg)
Precipitate size, volume fraction, and spacing
![Page 33: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/33.jpg)
![Page 34: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/34.jpg)
-30 -25 -20 -15 -10 -5 0 5 10-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
PC 1
PC
2
525 F650 F775 F
-0.5 0 0.5-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
PC 2
PC
3
![Page 35: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/35.jpg)
High Throughput Experiments
• Local properties• Local microstructure
![Page 36: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/36.jpg)
![Page 37: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/37.jpg)
![Page 38: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/38.jpg)
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
fr00
150 200 250
150
200
250
0.01
0.02
0.03
0.04
fr11
150 200 250
150
200
2500.92
0.93
0.94
0.95
![Page 39: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/39.jpg)
525 F
![Page 40: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/40.jpg)
fr00
150 200 250
150
200
250
0.01
0.02
0.03
fr11
150 200 250
150
200
2500.93
0.94
0.95
0.96
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.005
0.01
0.015
0.02
0.025
150 200 250
150
200
250
0.005
0.01
0.015
0.02
0.025
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.005
0.01
0.015
0.02
0.025
150 200 250
150
200
250
0.005
0.01
0.015
0.02
0.025
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
0.04
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.01
0.02
0.03
150 200 250
150
200
250
0.005
0.01
0.015
0.02
0.025
150 200 250
150
200
250
0.005
0.01
0.015
0.02
0.025
![Page 41: Nist project class report](https://reader036.vdocuments.us/reader036/viewer/2022062420/55b56c84bb61ebec7c8b481e/html5/thumbnails/41.jpg)
fr00
150 200 250
150
200
250
0.01
0.02
0.03
fr11
150 200 250
150
200
2500.93
0.94
0.95
0.96