ROOM-TEMPERATURE DEFORMATION OF SINGLE-CRYSTAL-B2 FE-AL ALLOYS - THE EFFECT OF STOICHIOMETRY AND COOLING RATE

被引：38

作者：

CRIMP, MA ^{[1
]}

VEDULA, K ^{[1
]}

机构：

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

来源：

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

基金：

美国国家航空航天局;

关键词：

D O I：

10.1080/01418619108213899

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The slip behaviour of B2 Fe-Al single crystals has been examined. Fe-rich variations in stoichiometry have resulted in large decreases in the critical resolved shear stress for <111>{110} slip. This decrease has been related to the associated decrease in antiphase-boundary energy from compositional disordering. Quenching has resulted in dramatic increases in strength for both stoichiometric and Ferich single crystals. This effect, which occurs without passing through an order-disorder transition, has been attributed to quenching-in of large concentrations of thermal vacancies which act to pin slip dislocations.

引用

页码：559 / 570

页数：12

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