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Interface Reactivity and Induced Phenomena during Sintering in a Model Steel/Cemented Carbide Bimaterial
Author(s) -
Thomazic Aurélie,
Pascal Céline,
Chaix JeanMarc
Publication year - 2011
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201000343
Subject(s) - materials science , sintering , cemented carbide , shrinkage , carbide , alloy , base (topology) , metallurgy , composite material , mathematical analysis , mathematics
Direct elaboration of a WC base cemented carbide/Fe base alloy model bimaterial by cosintering is studied. In this material, dramatic changes are observed for small modifications of the sintering temperature (20 °C) or the composition of the Fe base (+/− 0.1% C): overall shrinkage, macroscopic deformations, and binder fraction of the carbide material. This paper shows how these phenomena originate at the interface and then propagate inside the bulk. This example illustrates the need for taking into account chemical interaction at interfaces during cosintering of multimaterials, as these regions are thermodynamically far from equilibrium.