급속응고 Al-Si 합금 분말의 항복과 압축거동

Yield and Compaction Behavior of Rapidly Solidified AI-Si Alloy Powders

  • 김형섭 (충남대학교 금속공학과 및 급속응고신소재연구소) ;
  • 장기태 (충남대학교 금속공학과 및 급속응고신소재연구소) ;
  • 조성석 (충남대학교 금속공학과 및 급속응고신소재연구소) ;
  • 천병선 (충남대학교 금속공학과 및 급속응고신소재연구소)
  • 발행 : 1997.04.01

초록

In order to obtain high quality products in powder metallurgy, it is important to control and understand the densification behavior of metal powders. The effect of the characters of powders on the compaction behavior was studied in this study by using three types of powders produced by the gas atomization, the centrifugal atomization and the twin roll-pulverization. The shape of the powders was a major factor in the apparent or tap density, and the deformation resistance of the matrix of the powders was a major factor in compactibility. Han's yield function (eq.2) for metal powders was simplified from the relationship based on the experimental results of copper powders. In spite of some assumptions, the calculated compaction curves using a new yield functionw was in accordance with the experimental results.

키워드

참고문헌

  1. Int. Mat. Rev. v.137 Rapid solidification precessing with specific application to aluminium alloys E. J. Lavernia;J. D. Ayers;T. S. Srivatsan
  2. 충남대학교 석사학위논문 급속응고 Al 합금의 고온강도내마모성에 관한 연구 홍순직
  3. Advance in Powder Metall. Proc. Metall Powder Industries Federation Powder forging of rapidly solidified aluminum alloy powders and mechanical properties of their forged parts M. Otsuki;S. Kakehashi;T. Kohno
  4. Sumitomo Elec. Tech. Rev. v.34 Powder forging of rapidly solidified aluminum alloys T. Hayashi;T. Kaji;Y. Takeda;Y. Odani;K. Akechi
  5. Power Metall v.37 Elastoplastic finite element analysis for porous metals H. N. Ham;H. S. Kim;D. N. Lee
  6. Powder Metall. v.37 Analysis of coeffocient of friction in compression of porous metal rings H. N. Han;D. N. Lee;H. S. Kim
  7. Power Metall. v.35 Plastic yield behavior of porous metals D. N. Lee;H. S. Kim
  8. 서울대학교 박사학위논문 다공성 소결금속의 젼형과 금속분말의 성형해석 한홍남
  9. Metal Powder Federation Powder Forging H.A. Kuhn;B. L. Ferguson
  10. 충남대학교 박사학위논문 이태행
  11. Advances in Powder Metallurgy Fundamentals particulate metallurgy A. Lawley
  12. 분말야금학 대한금속학회
  13. 소성가공학 이동녕