HIGH-TEMPERATURE PLASTIC-DEFORMATION OF Y2O3-STABILIZED ZRO2 SINGLE-CRYSTALS .3. VARIATION IN WORK-HARDENING BETWEEN 1200-DEGREES-C AND 1500-DEGREES-C

被引：41

作者：

CHEONG, DS

DOMINGUEZRODRIGUEZ, A

HEUER, AH

机构：

[1] CASE WESTERN RESERVE UNIV HOSP,DEPT MAT SCI & ENGN,CLEVELAND,OH 44106

[2] UNIV SEVILLE,FAC FIS,DEPT FIS MAT CONDENSADA,E-41080 SEVILLE,SPAIN

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1991年 / 63卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1080/01418619108213886

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Plastic deformation has been studied in Y2O3-stabilized ZrO2 single crystals oriented for easy {001} <110> slip between 1200 and 1500-degrees-C. The yield stress shows a linear dependence on temperature because defect clusters act as discrete obstacles. These clusters also cause screw dislocations to become jogged, leading to ready production of edge dipoles and very high work-hardening rates (about mu/15). The high hardening on the primary system allows activation of secondary {111} <100> slip, which causes an apparent yield point at the higher temperatures.

引用

页码：377 / 388

页数：12

共 8 条

[1] HIGH-TEMPERATURE PLASTIC-DEFORMATION OF Y2O3-STABILIZED ZRO2 SINGLE-CRYSTALS .2. ELECTRON-MICROSCOPY STUDIES OF DISLOCATION SUBSTRUCTURES [J].