Thermodynamic modelling of the M6C carbide in cemented carbides and high-speed steel

被引：34
|
作者：
Frisk, K [1 ]
Bratberg, J [1 ]
Markström, A [1 ]
机构：
[1] Corros & Met Res Inst, S-11428 Stockholm, Sweden
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2005年 / 29卷 / 02期
关键词：
cemented carbides; high-speed steel; M6C carbide;
D O I：
10.1016/j.calphad.2005.07.001
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Newly published experimental information on phase equilibria in cemented carbides and high-speed steel has shown that the solubility of Co, Nb, Si, Ta and V in the M6C carbide is higher than predicted by thermodynamic calculations. To account for this new information the model for M6C was extended. A thermodynamic description of the M6C carbide in cemented carbides and high-speed steels is presented. Several experimental studies have shown that there is a solubility of Si in M6C in high-speed steels, and the new model describes this solubility. A significant solubility of Co and Nb has also been observed, and was accounted for. The solubility of Nb, Ta and V in M6C in cemented carbide systems is described. The models are discussed, and the calculated equilibria are compared with the new experimental information. (c) 2005 Published by Elsevier Ltd.
引用
收藏
页码：91 / 96
页数：6
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