한국주조공학회지 (Journal of Korea Foundry Society)
- 제17권5호
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- Pages.450-457
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- 1997
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- 1598-706X(pISSN)
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- 2288-8381(eISSN)
원심주조한 Cu-Zn-Al계 합금의 기계적 성질에 미치는 Ti 첨가와 균질화 처리의 영향
Effects of Ti Addition and Homogenizing Heat Treatment on the Mechanical Properties of Centrifugal Cast Cu-Zn-Al Alloy
- Kwon, Young-Hwan (Poosan Industry Co., Ltd) ;
- Jea, Chang-Wooing (Chang-Won Poly Technic College) ;
- Yoon, Jae-Hong (Chang-Won National University) ;
- Kang, Chang-Yong (Pukyong National University) ;
- Kim, Chang-Gyu (Pukyong National University)
- 발행 : 1997.10.20
초록
Effects of Ti addition and homogenizing heat treatment on the mechanical properties in Cu-Zn-Al alloy (high strength yellow brass) were investigated. Grain refinement was successfully achieved by Ti addition. The microstructure, which was composed of island or fine feather-like branched Ti compounds was changed to feather-like eutectic microstructure as the content of Ti increased. The highest hardness value was obtained for 0.5 wt.% Ti specimen and the second was Ti non-added specimen in as-cast condition. The highest tensile strength was obtained for 0.5 wt.% Ti specimen. Because of the presence of cast defects and worse castability, tensile strength decreased as the content of Ti increased. Elongation increased with increasing homogenizing time and temperature; remarkable increase was obtained for
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