논문 국내 국내전문학술지(KCI급) Al-7Si-0.4Mg-1Fe 주조합금의 미세조직과 인장성질에 미치는 Mn, Cr 및 Sr 첨가의 영향
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2009-02
- 저자명 조재익,김정민공동(제1),박준식,김하영,정창열
- 학술지명 한국주조공학회지
- 발행처명 한국주조공학회
- 발행국가 국내
- 논문언어 한국어
홈페이지논문 초록 (Abstract)
The microstructure of Al-7Si-0.4Mg-1Fe alloy mainly consists of aluminum dendrites, Al-Si eutectics, and Al5FeSi needles. When Mn was added to the alloy, the substantial amount of Al5FeSi phase was changed into Al(Mn,Fe)Si, however the needle-like morphology was almost unchanged. Combined additions of Cr or Sr with Mn to the base alloy resulted in rod-like Al(Mn, Fe,Si)Si phase. The tensile properties of as-cast alloys were enhanced by the Mn addition, especially when it was added with Sr. The tensile properties after T6 heat treatment was a little improved with 0.7%Mn addition, but Cr or Sr additions with Mn didn't show any positive effect on the properties of heat-treated alloys.