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다이캐스팅으로 제조된 Silafont-36 합금의 기계적 특성에 미치는 T6 열처리 영향

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Author(s)
서남혁 최승규 전준협 윤상일 김동현 김태영 손승배 이석재
Issued Date
2020
Keyword
Silafont-36 alloy T6 heat treatment Mechanical properties Microstructure Secondary dendrite arm spacing (SDAS)
Abstract
Silafont-36 alloy is an Al-Si-Mg based alloy widely used in automotive applications. Its mechanical properties can be changed through T5 or T6 heat treatment. In this study, we investigated the influence of T6 heat treatment on the mechanical properties of Silafont-36 alloy prepared by die casting. The standard T6 heat treatment condition is as follows: (1) solution heat treatment for 2 hours in vacuum atmosphere at 510°C and water quenching, and (2) artificial aging treatment for 4 hours at 180°C in vacuum atmosphere and air cooling. Heat treatments were applied based on the above treatment conditions with changes in the solution treatment and artificial aging treatment conditions. Tensile test, hardness test, and microstructure analysis were performed on the heat-treated specimens. As the solution treatment temperature increased, the tensile strength increased. On the other hand, tensile strength decreased with increasing aging temperature and holding time. From a microstructure analysis, it was confirmed that the tensile strength increased with decreasing secondary dendrite arm spacing.
Alternative Title
Effect of T6 Heat Treatment on Mechanical Properties of Silafont-36 Alloy Fabricated by Die Casting
Alternative Author(s)
Namhyuk Seo Seunggyu Choi Junhyub Jeon Sang-Il Yoon Dong-Hyeon Kim Taeyoung Kim Seung Bae Son Seok-Jae Lee
Publisher
조선대학교 공학기술연구원
Type
Research Laboratory
ISSN
2005-3142
URI
https://oak.chosun.ac.kr/handle/2020.oak/19362
http://www.chosun.ac.kr/user/indexSub.do?codyMenuSeq=23376167&siteId=riet&dum=dum&boardId=168878&page=1&command=view&boardSeq=334164
Appears in Collections:
2020 > Vol 13, No 4
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