DEFORMATION TWINNING IN INTERMETALLIC COMPOUNDS - THE DILEMMA OF SHEARS VS SHUFFLES

被引：79

作者：

CHU, FM

POPE, DP

机构：

[1] Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1993年 / 170卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(93)90367-N

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper the geometric description and general theory of mechanical twinning are reviewed, the twins in general lattices and superlattices are summarized, and the kinematic process by which mechanical twins form is revisited. A case study of mechanical twinning of HfV2 + Nb, a C15 (cubic) Laves phase, is presented and the synchroshear of selected atomic layers is proposed to explain the physical process of twin formation. If the twins form in this way, then long shear vectors and/or atomic shuffles are not really necessary.

引用

页码：39 / 47

页数：9

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