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Elaboration of (Steel/Cemented Carbide) Multimaterial by Powder Metallurgy
Pascal Celine,Chaix Jean-Marc,Dutt Ankur,Lay Sabine,Allibert Colette H. 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
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.