硬质合金及耐磨涂层：理论设计及产品开发(Ⅱ)  

Cemented Carbides and Hard Coatings: Theoretical Design and Product Development(Ⅱ)

作　　者：周鹏[1,2] 彭英彪[2] 龙坚战[2] 吕健[2] 田海霞 张聪 张伟彬[2] 王雅茹[2] 陈冲 杜勇[2] 金展鹏[2] Peng Yingbiao;Zhou Peng;Long Jianzhan;Lv Jian;Tian Haixia;Zhang Cong;Zhang Weibi;Wang Yaru;Du Yong;Jin Zhanpeng(Hunan Provincial Key Defense Laboratory of High Temperature Wear-Resisting Materials and Preparation Technology,Hunan University of Science and Technology,Xiangtan Hunan 411201,China;State Key Laboratory of Powder Metallurgy,Central South University,Changsha Hunan 410083,China)

机构地区：[1]湖南科技大学高温耐磨材料及制备技术湖南省国防科技重点实验室,湖南湘潭411201 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083

出　　处：《硬质合金》2019年第5期329-336,共8页Cemented Carbides

基　　金：国家自然科学基金项目51701072;湖南省自然科学基金2017JJ3088

摘　　要：本文阐述了集成计算材料工程在梯度硬质合金、超细硬质合金、金属间化合物硬质合金、Ti(C,N)基金属陶瓷四类多元硬质合金中的应用。借助热力学计算缩小硬质合金的成分范围,以实现有利相的析出或不利相的抑制。通过热力学计算和动力学模拟调整烧结温度、时间等工艺参数,以实现功能结构的定制或缺陷组织的规避。这四个研发案例的主要特点在于有效结合计算模拟及关键实验以优化硬质合金的成分-工艺设计,准确描述各合金制备过程中的烧结行为及冶金反应,从而实现其微观结构的精准调控,为相关牌号综合性能的显著提升奠定理论基础。In this paper, the application of ICME(Integrated Computational Materials Engineering) in four types of multi-component cemented carbides, i.e. gradient cemented carbides, ultra-fine cemented carbides, intermetallics-bonded cemented carbides, and Ti(C,N)-based cermets, is elaborated. Using thermodynamic calculation, the composition range of cemented carbides is narrowed, hence favorable phases are precipitated and unwanted phases are inhibited. By means of thermodynamic calculation and kinetic modeling, the process parameters, e.g. sintering temperature and time, are adjusted,therefore functional structures are tailored and defective structures are avoided. The main feature of the four R&D examples is to effectively integrate computational methods with key experiments, thereby optimizing the composition-process design,properly describing sintering behaviors and metallurgical reactions during the preparation of cemented carbides, precisely controlling the microstructures, and lying a theoretical basis for the improvement of comprehensive properties.

关 键 词：硬质合金 热力学计算 动力学模拟 微观结构 合金设计 

分 类 号：TF[冶金工程]