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

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Elaboration of (Steel/Cemented Carbide) Multimaterial by Powder Metallurgy

  • Pascal, Celine (Laboratoire de Thermodynamique et Physico-Chimie Metallurgique) ;
  • Chaix, Jean-Marc (Laboratoire de Thermodynamique et Physico-Chimie Metallurgique) ;
  • Dutt, Ankur (Laboratoire de Thermodynamique et Physico-Chimie Metallurgique) ;
  • Lay, Sabine (Laboratoire de Thermodynamique et Physico-Chimie Metallurgique) ;
  • Allibert, Colette H. (Laboratoire de Thermodynamique et Physico-Chimie Metallurgique)
  • Published : 2006.09.24
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Abstract

A steel/cemented carbide couple is selected to generate a tough/hard two layers material. Sintering temperature and composition are deduced from phase equilibria, and experimental studies are used to determine optimal conditions. Liquid migration from the hard layer to the tough one is observed. Microstructure evolution during sintering of the tough material (TEM, SEM, image analysis) evidences coupled mechanisms of pore reduction and WC dissolution. Liquid migration, as well as interface crack formation due to differential densification are limited by suitable temperature and time conditions.

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