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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2012.5
- 수록면
- 1,300 - 1,309 (10page)
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초록· 키워드
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This paper is concerned with the effect of deformation twinning on the strain hardening in pure titanium. It is reported that the strain hardening of titanium during compressive deformation shows uncommon behavior. Generally, strain hardening rate of metallic materials is decreasing as strain increases. In accordance with many researches for titanium, however, strain hardening behavior of titanium shows different characteristics from general metallic materials. It is observed that the strain hardening rate of titanium during compression process can be divided into 3 stages. In first stage, strain hardening rate is decreasing as strain increases. Following first stage, strain hardening rate is increasing as strain increases in second stage. After second stage, strain hardening rate is decreasing again as strain increases in third stage. It is well known that the occurrence of the second stage is due to the occurrence of the deformation twinning. In this paper, the occurrence and the growth of the deformation twinning are observed using EBSD. Change of twin volume fraction during compressive deformation of titanium is investigated quantitatively. Strain hardening model which can represent the strain hardening of titanium is also suggested by investigating the effect of deformation twinning on the strain hardening behavior.
목차
Abstract
1. 서론
2. 인장 및 압축 시험
3. EBSD를 이용한 미시조직 분석
4. 쌍정의 영향을 고려한 물성모델 개발
4. 결론
References
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UCI(KEPA) : I410-ECN-0101-2014-556-001325531