지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.5
- 수록면
- 180 - 183 (4page)
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이 논문의 연구 히스토리 (4)
2011
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초록· 키워드
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Fine grained materials have been known to show superplastic elongation at elevated temperature. Fine grained superplastic A1 alloys usually bring more than several hundred percent elongation at optimum conditions. Cavitation along grain boundaries has been known to be the most important mechanism to lead a fracture in superplastic A1 alloys when grain boundary sliding is main deformation mechanism. Recently, Mg alloys have drawn a lot of attention due to their lightness. Since Mg alloy have the worst formability among metallic engineering materials, superplastic blowing at the elevated temperature would be one of option to avoid poor formability, however, Mg alloy such as AZ31 sheet just showed much lower elongation compared with A1 alloys with similar grain size.
In the present study, cavitation behavior is investigated to understand a difference in fine-grained A1 and Mg alloy in terms of deformation and microstructure evolution during high temperature deformation. Generally, particles sitting along rolling direction would be the preferable sites for cavity opening in microstructure observation. However, back pressure did not influence the overall blow forming characteristics in AZ31 system as much as in superplastic A1 alloys. This tendency might be originated from a limited accommodation system for grain boundary sliding of AZ31
In the present study, cavitation behavior is investigated to understand a difference in fine-grained A1 and Mg alloy in terms of deformation and microstructure evolution during high temperature deformation. Generally, particles sitting along rolling direction would be the preferable sites for cavity opening in microstructure observation. However, back pressure did not influence the overall blow forming characteristics in AZ31 system as much as in superplastic A1 alloys. This tendency might be originated from a limited accommodation system for grain boundary sliding of AZ31
목차
Abstract
1. 서론
2. 실험 방법 및 결과
3. 요약
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UCI(KEPA) : I410-ECN-0101-2014-551-000203948