materials science and engineeringfmam.cau.ac.kr/home_kr/wp-content/uploads/2017/11/2… · ·...
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Materials Science and Engineering
Prof. Seung Tae CHOI ( )
22 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Materials Science and Engineering
Instructor: Prof. Seung Tae CHOI ( )
Textbook:
Evaluation
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33 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Chapter 1. Introduction
What is materials science?Materials science
Materials engineering
Why should we know about it?
Materials drive our society
44 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Example: Titanic on April 15, 1912
RMS Titanic
Titanic
Liberty Ship during World War II
Ductile to Brittle Transitionof Steel upon Cooling
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55 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Processing, Structure, Properties, & Performance
Four Components for Design, Production, and Utilization of Materials
Structure
Property
66 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Processing, Structure, Properties, & Performance
Processing can change structure
Properties depend on structure
Callister& Rethwisch 9e
Callister & Rethwisch 9e
(d)
30 m(c)
4 m
(b)
30 m
(a)
30 m
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77 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Example: Ultra High Strength Steel
Example of hot stamped parts
••••••••••••
The skeleton of the Mercedes CL
88 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
The Materials Selection Process
TheMaterials Selection Process
Three criteria important in the materials selection process
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99 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Classification of Materials: Metals
Based on chemical makeup and atomic structure, solid materials canbe grouped into three basic categories: metals, ceramics, and polymers.
Metals:
110 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Classification of Materials: Ceramics & Polymers
Ceramics
Polymers
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111 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Typical Material Properties
Fig. 1.4 Fig. 1.5
Fig. 1.7 Fig. 1.6
112 SCHOOL OF MECHANICAL ENGINEERINGLECTURER: PROF. SEUNGTAE CHOI
Advanced Materials & Modern Materials’ Needs
Advanced MaterialsSemiconductors
Biomaterials
Smart (or intelligent) materials
Nanomaterials
Modern Materials’ Needs