Influence of applied pressure during field-assisted sintering of Ti(C,N)-WC-FeAl based nanocomposite

被引：18
作者：
Archana, M. S. [1 ,2 ]
Srikanth, V. V. S. S. [2 ]
Joshi, S. V. [1 ]
Joardar, J. [1 ]
机构：
[1] Int Adv Res Ctr Powder Met & New Mat ARCI, Hyderabad 500005, Andhra Pradesh, India
[2] Univ Hyderabad, Sch Engn Sci & Technol, Hyderabad 500046, Andhra Pradesh, India
来源：
CERAMICS INTERNATIONAL | 2015年 / 41卷 / 02期
关键词：
Sintering; Nanocomposites; Mechanical properties; Cutting tools; MECHANICAL-PROPERTIES; CERMETS; MICROSTRUCTURE; COMPOSITES; FRACTURE; TI(C; PERFORMANCE; SIMULATION; EVOLUTION; BEHAVIOR;
D O I：
10.1016/j.ceramint.2014.09.022
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ti(C,N)-WC-FeAl based nanocomposites are processed by field-assisted sintering at 1500 degrees C. The phase and microstructural evolution during the process under the influence of different applied pressures of 30, 50 and 100 MPa are studied using x-ray diffraction and scanning electron microscopy. Lattice parameters of (Ti,W)(C,N) solid solution and binder phases after sintering are found to vary with applied pressure. The nanocomposite grains are observed to possess a core-rim microstructure. Microstructural variations in terms of type, size and fraction of "corerim" structure as a function of applied pressure are investigated. The hardness and indentation fracture toughness values are in the range of 17.6-18.4 GPa and 5.9-6.8 MPa root m, respectively. These values are comparable with those reported for Ti(C,N)-based composites with metal binder. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
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页码：1986 / 1993
页数：8
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