Ti-6Al-4Fe 합금의 가공열처리 미세조직 분석
(주)코리아스칼라
- 최초 등록일
- 2016.04.02
- 최종 저작일
- 2015.08
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서지정보
ㆍ발행기관 : 한국재료학회
ㆍ수록지정보 : 한국재료학회지 / 25권 / 8호
ㆍ저자명 : 최병학, 최원열, 심종헌, 박찬희, 강주희, 김승언, 현용택
목차
1. 서 론
2. 실험 방법
3. 실험 결과 및 고찰
3.1 용체화처리 후의 미세조직
3.2 열간압연 후의 미세조직
3.3 어닐링 후의 미세조직
4. 결 론
Acknowledgement
References
영어 초록
Microstructural analysis of a (α+β) Ti alloy was investigated to consider phase transformation in each step of thethermo-mechanical process using by SEM and TEM EDS. The TAF (Ti-6Al-4Fe) alloy was thermo-mechanically treated withsolid solution at 880oC, rolling at 880oC and annealing at 800oC. In the STQ state, the TAF microstructure was composedof a normal hcp α and metastable β phase. In a rolled state, it was composed of fine B2 precipitates in an α phase, whichhad high Fe segregation and a coherent relationship with the β matrix. Finally, in the annealing state, the fine B2 precipitateshad disappeared in the α phase and had gone to the boundary of the α and β phase. On the other hand, in a lower rollingtemperature of 704oC, the B2 precipitates were more coarse in both the α and the boundary of α and β phase. We concludedthat microstructural change affects the mechanical properties of formability including rolling defects and cracks.
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