以多组元黏结相制备WC基硬质合金的研究进展

Research progress of multi-component binder phase WC-based cemented carbide

利用多组元合金替代Co作黏结相可以提高硬质合金综合性能。本文从黏结相成分、合金组织与性能等方面较系统的综述了近年来利用多组元合金作黏结相制备WC基硬质合金的研究进展。分析了多组元合金替代后黏结相的相变行为,以及WC/多组元合金界面对硬质合金力学性能的影响,提出其影响机理为位错滑移条件的改变。

The comprehensive performance of cemented carbide can be improved by using a multi-component alloy instead of Co as the binder phase.In this paper,the research progress of WC-based cemented carbide prepared by using multicomponent alloy as a binder phase in recent years was systematically reviewed from the aspects of binder phase composition,alloy structure,and properties.The phase transformation behavior of the binder phase after multi-component alloy substitution and the influence of WC/multi-component alloy interface on the mechanical properties of cemented carbide were analyzed.It was proposed that the influence mechanism was the change of dislocation slip condition.