Gradient zones in WC-Ti(C,N)-Co-based cemented carbides:: Experimental study and computer simulations

被引：108

作者：

Ekroth, M ^{[1
]}

Frykholm, R

Lindholm, M

Andrén, HO

Ågren, J

机构：

[1] Royal Inst Technol, Dept Mat Sci & Engn, Stockholm, Sweden

[2] Chalmers Univ Technol, Dept Expt Phys, S-41296 Gothenburg, Sweden

[3] Univ Gothenburg, Gothenburg, Sweden

[4] AB Sanvik Coromant, Stockholm, Sweden

来源：

ACTA MATERIALIA | 2000年 / 48卷 / 09期

关键词：

gradient sintering; microstructure; diffusion; thermodynamics; computer simulation;

D O I：

10.1016/S1359-6454(00)00029-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The formation of surface zones with a composition gradient during sintering of WC-Ti(C,N)-Co cemented carbides has been studied experimentally and by computer simulations. The microstructure has been investigated with SEM and EPMA. The simulations are based on a solution of the multicomponent diffusion equations, coupled with thermodynamic calculations using thermodynamic descriptions of the individual phases. The results from the simulations are in good agreement with the experimental results, indicating that diffusion and the thermodynamic properties are the two major factors that control the gradient structure formation. (C) 2000 Acta Metallurgica Inc. Published by Elsevier Science Ltd. AN rights reserved.

引用

页码：2177 / 2185

页数：9

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