微量合金元素对硬质合金性能的影响-中国材料进展

文章信息/Info

Title:: Effect of on micro-alloying elements on the properties of cemented carbides

摘要:: 为改善金属-陶瓷复合材料的物理、化学及机械性能，通常会在其中添加微量合金元素，然而如果添加方法不同、或后续处理方法不当，则合金元素的功效无法完全发挥，甚至会出现负面效应。而这些最终都可归结到对微量元素的精确控制。硬质合金属于金属-陶瓷复合材料中最重要的材料之一，因此，本文首先详细概括总结了常见的微量合金元素对硬质合金的制备、组织结构和性能的影响。并详细分析研究了微量合金元素的来源、在硬质合金中的作用机理，及其精确控制难点。最后根据其作用机理，提出一些可能的有效措施用于精确控制微量合金元素在硬质合金中的含量，相组成，存在状态，分布等。以期能为硬质合金的生产实际提供一些理论指导。

Abstract:: In order to improve the physical, chemical and mechanical properties of metal-ceramic composite materials, some micro-alloying elements have usually been added, but due to some different adding methods or some improper subsequent processing methods, the efficacy of micro-alloying elements can not fully play, and even some negative effects have been caused. Ultimately the above results can be attributed to the precise controlling of micro-alloying elements. Cemented carbide is one of the most important materials in metal-ceramic composite materials. Therefore, in this paper, effects of micro-alloying elements on the preparation, microstructure and properties of cemented carbides have been detailedly summarized. The sources of micro-alloying elements, their action mechanisms in cemented carbide, and their precise controlling difficulties have been analyzed and studied. Based on their action mechanisms in cemented carbide, some possible effective measures are proposed to precisely control the content, phase composition, existence state, distribution etc., in cemented carbide. And some theoretical assistances can been guided to the actual production of cemented carbide.