논문 상세보기

분말야금공정으로 제조한 SiCw/6061Al 복합재료의 미세조직에 미치는 ECAP가공의 영향 KCI 등재

Effect of ECAP on Microstructure of SiCw/6061Al Composites Produced by Powder Metallurgy

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/2210
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

The 6061 Al alloy based composites reinforced with 10 vol% SiC whiskers were prepared by powder metallurgy with the powders having the different sizes, i.e. < and> The composites were subjected to equal channel angular pressing (ECAP) at various conditions and the microstructural changes during ECAP were examined In the composites SiC whiskers were clustered and randomly aligned. The clusters were relatively well distributed in the composite with the smaller initial powder size. After ECAP, the clusters were aligned parallel to flow direction and became smaller. In addition, the shape of clusters was changed from irregular to round. The microstructure of the ECAPed samples were compared with those of the conventionally hot-extruded composites. The uniform microstructure and enhanced microhardness could be obtained by using the powders having the smaller size, decreasing ECAP temperature and repeating ECAP.

저자
  • 장시영 | Chang Si-Young