Ultrafine (Ti, M) (C, N)-based cermets with optimal mechanical properties

被引：74
作者：
Liu, Ying [1 ]
Jin, Yongzhong [1 ,2 ]
Yu, Haijun [1 ]
Ye, Jinwen [1 ]
机构：
[1] Sichuan Univ, Sch Mat Sci & Engn, Chengdu 610065, Peoples R China
[2] Sichuan Univ Sci & Engn, Dept Mat & Chem Engn, Zigong 643000, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2011年 / 29卷 / 01期
关键词：
Cermet; (Ti M) (C N); Core/rim structure; Mechanical property; MICROSTRUCTURE; (TI;
D O I：
10.1016/j.ijrmhm.2010.08.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A tough and strong cermet with the composition (Ti 20M 0 2V) (C N)-16M-20Ni/Co (M = W Mo) was prepared by mixing WC and Mo2C with ultrafine (Ti M) (C N) powders and then processed via a conventional P/M technique It has an ultrafine and distinct core/rim structure resulting in excellent mechanical properties bending strength of 2210 MPa HV hardness of 14 7 GPa and toughness of 10 1 MPa m(1/2) The small concentration gradient in core/rim composition and the disappearance of inner rims benefit the reduction of the stress concentration at the core/rim interface in (Ti M) (C N)-MxC cermets and thus improve their toughness In addition ultrafine microstructure improves mainly their bending strength and hardness (C) 2010 Elsevier Ltd All rights reserved
引用
收藏
页码：104 / 107
页数：4
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