열처리에 따른 메탈베어링용 Al-Sn 합금의 미세조직 제어

Microstructural Control of Al-Sn Metal Bearing Alloy with Heat Treatment

  • 김진수 (동아대학교 신소재공학과) ;
  • 박태은 (동아대학교 신소재공학과) ;
  • 한춘봉 (동아대학교 신소재공학과) ;
  • 손광석 (동아대학교 신소재공학과) ;
  • 김동규 (동아대학교 신소재공학과)
  • Kim, Jin-Soo (Dept. of Materials Science and Engineering, Dong-A University) ;
  • Park, Tae-Eun (Dept. of Materials Science and Engineering, Dong-A University) ;
  • Hahn, Chun-Feng (Dept. of Materials Science and Engineering, Dong-A University) ;
  • Sohn, Kwang-Suk (Dept. of Materials Science and Engineering, Dong-A University) ;
  • Kim, Dong-Gyu (Dept. of Materials Science and Engineering, Dong-A University)
  • 발행 : 2009.02.20

초록

Conventionally, Al-Sn bearing manufacturing involves casting the Al-Sn alloy and roll-bonding to a steel backing strip. This article will describe the microstructural control of Al-Sn metal bearing alloy following heat treatment. When the pure aluminum rod dipped in the melt of tin maintained below the melting point of aluminum, the melting of aluminum was accelerated with penetration of tin along the grain boundary of aluminum. The length of plate-shaped eutectic tin was decreased with heat treatment time. With even longer heat treatment time over 1 hour the length of eutectic tin didn't decrease any more, while resulting in coarsening of aluminum matrix. Exuded liquid of eutectic tin was formed at the surface of Al-Sn alloy after heat treatment even at below eutectic temperature.

키워드

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