한국주조공학회지 (Journal of Korea Foundry Society)

  • 제22권1호
  • /
  • Pages.26-34
  • /
  • 2002
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  • 1598-706X(pISSN)
  • /
  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
권호 표지

아공정 Al-Si 합금의 개량처리와 주단조에 의한 조직변화에 관한 연구

A study on the Microstructural Changes with Modification and Cast-forging in Hypoeutectic Al-Si Alloys

  • 윤지현 (울산대학교 첨단소재공학부) ;
  • 설은철 (울산대학교 첨단소재공학부) ;
  • 김억수 (동남정밀(주)) ;
  • 이광학 (울산대학교 첨단소재공학부)
  • Yoon, Ji-Hyun (The School of Materials Science and Engineering, University of Ulsan) ;
  • Seol, Eun-Cheol (The School of Materials Science and Engineering, University of Ulsan) ;
  • Kim, Eok-Soo (Dong-Nam precision Co., Ltd.) ;
  • Lee, Kwang-Hak (The School of Materials Science and Engineering, University of Ulsan)
  • 발행 : 2002.02.20
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초록

For application of cast-forging process with Al-Si alloys, casting experiments are carried out by adding Sr and TiB to Al-Si alloys for grain refinement treatment. We experimented on the mechanical properties according to microstructural changes, forging ability test and also investigated the mechanical properties after forging. The finest microstructure could be observed respectively when 0.05 wt.%Sr and 0.1 wt.%TiB were added. In this case, tensile strength and elongation increased much more than as casting. After high temperature deformation simulation test with grain refinement specimens was carried out, about 60N per unit $area(mm^2)$ of specimen was confirmed. After hot forging, tensile strength and elongation were increased. It was considered that casting defect was removed by compressive working.

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참고문헌

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