Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Effect of Cu and Mg on Forging Property and Mechanical Behavior of Powder Forged Al-Si-Fe Based Alloy

  • Lee, Dong-Suk (School of Materials Science and Engineering, Inha University) ;
  • Jung, Taek-Kyun (School of Materials Science and Engineering, Inha University) ;
  • Kim, Mok-Soon (School of Materials Science and Engineering, Inha University) ;
  • Kim, Won-Yong (Advanced Materials R&D Center, Korea Institute of Industrial Technology)
  • Published : 2006.09.24
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Abstract

Two atomized alloy powders were pre-compacted by cold and subsequently hot forged at temperatures ranging from 653K to 845K. The addition of Cu and Mg causes a decrease in the eutectic reaction temperature of Al-10Si-5Fe-1Zr alloy from 841K to 786K and results in a decrease of flow stress at the given forging temperature. TEM observation revealed that in addition to Al-Fe based intermetallics, $Al_2Cu$ and $Al_2CuMg$ intermetallics appeared. The volume fraction of intermetallic dispersoids increased by the addition of Cu and Mg. Compressive strength of the present alloys was closely related to the volume fraction of intermetallic dispersoids.

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