TiMoCN-based cermets: high-temperature deformation

被引：44

作者：

Bolognini, S ^{[1
]}

Feusier, G

Mari, D

Viatte, T

Benoit, W

机构：

[1] Ecole Polytech Fed Lausanne, Inst Phys Mat Complexe, SB EPFL, CH-1015 Lausanne, Switzerland

[2] Allegheny Technol, La Vergne, TN 37086 USA

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2003年 / 21卷 / 1-2期

关键词：

TEM; titanium carbonitride; cobalt; creep; activation energy;

D O I：

10.1016/S0263-4368(02)00091-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The high-temperature behaviour of Ti(C,N)-Mo(2)C-Co cermets is investigated by three point bend tests in order to describe the deformation mechanisms that appear during their use in cutting tool applications. The results of constant strain rate tests and activation energy measurements by creep tests suggest a description of the mechanical behaviour in three temperature domains: elastic and brittle from room temperature to about 1150 K, limited plasticity between 1150 and 1350 K, and creep above 1350 K. Two mechanisms control the cermet deformation at high temperature: grain deformation (in the second domain) and grain boundary sliding (in the third domain). (C) 2003 Elsevier Science Ltd. All rights reserved.

引用

页码：19 / 29

页数：11

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