PLASTIC DEFORMATION BEHAVIOUR OF LONG-RANGE ORDERED IRON-ALUMINIUM ALLOYS .I. SINGLE CRYSTAL DEFORMATION EXPERIMENTS

被引：73

作者：

LEAMY, HJ

KAYSER, FX

MARCINKOWSKI, MJ

机构：

[1] Institute for Atomic Research and Department of Metallurgy, Iowa State University of Science and Technology, Ames, IA

[2] Bell Telephone Laboratories, Inc., Murray Hill, NJ

[3] The University of Maryland, College Park, MD

来源：

PHILOSOPHICAL MAGAZINE | 1969年 / 20卷 / 166期

关键词：

D O I：

10.1080/14786436908228043

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The compressive deformation behaviour of iron-aluminium alloy single crystals containing 23·8, 28·0 and 30·0 at. % Al has been investigated in the temperature range from 77° to 683°K. The results of these experiments verify the unusual deformation behaviour first observed in polycrystals. Specifically, long-range ordered alloys may exhibit, depending upon temperature and composition, deformation stages which are produced by superlattice dislocations of various ce:degrees of perfection. Single crystals may deform via the formation of as many as four linear work-hardening stages followed by a parabolic stage. The existence of the linear stages requires that superlattice dislocations be nucleated during deformation. An analysis of the super-lattice dislocation nucleation process is therefore included. This analysis is adequate to describe the conditions required for formation of the linear stages in agreement with experiment. © 1969 Taylor & Francis Group, LLC.

引用

页码：763 / +

页数：1

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