Influence of residual stresses on thermal stress resistance of refractory ceramic

被引：16

作者：

Lanin, AG ^{[1
]}

Deryavko, II ^{[1
]}

机构：

[1] Sci Res Inst SIA LUCH, Podolsk 142100, Russia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2000年 / 20卷 / 02期

关键词：

thermal stress resistance; residual stresses; fracture; carbides; ZrC;

D O I：

10.1016/S0955-2219(99)00145-4

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：

The conditions of formation of residual stresses (RS) in a thermo-loaded ZrC disk at the cost of relaxation of thermal stresses are considered. The creation of RS was carried out during the heating of samples by an electron beam and induction methods at different rates in a range 1600-2300 K. The kinetics of formation and distribution of RS depending on temperature, nonuniformity of the temperature field and temperature exposure period is investigated. The influence of the sign and level of residual stresses on the thermal stress resistance and fracture character are established. Acceptable modes of thermal loading, eliminating sample fracture under RS or the formation of a favourable stress field increasing the thermal stress resistance are defined. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：209 / 213

页数：5

共 21 条

[1] THE FAILURE OF BRITTLE SOLIDS CONTAINING SMALL CRACKS UNDER COMPRESSIVE STRESS STATES [J].