Lattice correspondence during twinning in hexagonal close-packed crystals

被引:141
|
作者
Niewczas, M. [1 ]
机构
[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4M1, Canada
关键词
Hexagonal close-packed metals; Twinning; Lattice correspondence; Slip systems; Lattice transformation; STACKING-FAULT TETRAHEDRA; PLASTIC DEFORMATION; DISLOCATIONS; SLIP; INTERSECTION; TITANIUM; SHOCKLEY; INDEXES; TWINS; ZR;
D O I
10.1016/j.actamat.2010.06.059
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The correspondence of the dominant slip modes in parent and twin structures in hexagonal closed-packed crystals is considered within the framework of the theory of deformation twinning. The correspondence matrices, which provide a link between the parent and twin lattices, have been worked out for compound twinning modes and selected metals. Geometrical considerations suggest that in most cases deformation twins should inherit a harder dislocation substructure than that of the corresponding parent. Possible mechanisms of twin hardening are discussed. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:5848 / 5857
页数:10
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