摘要
硬质合金的改性优化路线通常包括先进的烧结工艺、热处理工艺、微合金化与添加第二相、表面涂层技术等。深冷处理作为传统热处理工艺的一项重要扩展与延伸,因低能耗、无污染等特点受到刀具材料制造行业越来越多关注。本文以WC-Co硬质合金为对象,调研了2000~2020年期间国内外公开发表的深冷处理研究工作,总结了WC-Co体系在深冷处理过程微结构演化及机理方面的研究进展,并分别从材料的力学性能(硬度、抗弯强度、冲击韧性与断裂韧性)、残余应力和服役性能(切削、磨损)三个方面开展了合金牌号成分组织与改性优化之间的关联分析,讨论了起主导作用的显微机制。未来硬质合金深冷处理研究应进一步注重与新表征技术、材料计算模拟的结合。这些技术革新将有效加快硬质合金新牌号的研发进程,开拓新的应用领域,助力我国高端制造行业的发展。
Advanced sintering methods,heat treatment,micro-alloying and addition of the second phase and surface coating technology are the most commonly adopted property modification routes for cemented carbide.Deep-cryogenic treatment(DCT),an important variant and extension of traditional heat treatment,has drawn increasing attention in the cutting tool manufacturing community for low energy consumption and low pollution features.This review paper is based on a comprehensive survey of open literatures published within 2000-2020,with a special focus towards WC-Co type cemented carbide.A summary of research progress upon governing mechanisms and microstructure evolution during DCT is presented.Correlation analyses between composition/microstructure and material properties are performed from the aspects of mechanical properties,residual stress and performance properties.Incorporation of new characterization tools and materials modelling is highly recommended in future DCT study of cemented carbide.This shall speed up the R&D cycle,allow wider range of material application and be in great favour of the development of high-end manufacturing industry in China.
作者
易晓鸥
王方方
梁自强
陶星豪
辛浩翔
Yi Xiaoou;Wang Fangfang;Liang Ziqiang;Tao Xinghao;Xin Haoxiang(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)
出处
《硬质合金》
CAS
2021年第3期219-228,共10页
Cemented Carbides
基金
国家自然科学基金(51701014)。
关键词
WC-CO
深冷处理
力学性能
服役性能
成分与组织
关联分析
WC-Co
deep-cryogenic treatment
mechanical properties
performance properties
composition and microstructure
correlation analysis
