급속응고 Al-20 wt% Si 합금분말 압출재의 ECAP
(주)코리아스칼라
- 최초 등록일
- 2016.04.01
- 최종 저작일
- 2004.04
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서지정보
ㆍ발행기관 : 한국분말야금학회
ㆍ수록지정보 : 한국분말야금학회지 / 11권 / 2호
ㆍ저자명 : 윤승채, 홍순직, 서민홍, 팜쾅, 김형섭
영어 초록
In this paper processing and mechanical properties of Al-20 wt% Si alloy was studied. A bulk form of Al-20Si alloy was prepared by gas atomizing powders having the powder size of 106-145 and powder extrusion. The powder extrudate was subsequently equal channel angular pressed up to 8 passes in order to refine grain and Si particle. The microstructure of the gas atomized powders, powder extrudates and equal channel angular pressed samples were investigated using a scanning electron microscope and X-ray diffraction. The mechanical properties of the bulk sample were measured by compressive tests and a micro Victors hardness test. Equal channel angular pressing was found to be effective in matrix grain and Si particle refinement, which enhanced the strength and hardness of the Al-2OSi alloy without deteriorating ductility in the range of experimental strain of 30%.
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