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

Authors
CHU FM POPE DP
Citation
Fm. Chu et Dp. Pope, DEFORMATION TWINNING IN INTERMETALLIC COMPOUNDS - THE DILEMMA OF SHEARS VS SHUFFLES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 170(1-2), 1993, pp. 39-47
Citations number
22
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
170
Issue
1-2
Year of publication
1993
Pages
39 - 47
Database
ISI
SICI code
0921-5093(1993)170:1-2<39:DTIIC->2.0.ZU;2-H
Abstract
In this paper the geometric description and general theory of mechanic al twinning are reviewed, the twins in general lattices and superlatti ces are summarized, and the kinematic process by which mechanical twin s form is revisited. A case study of mechanical twinning of HfV2 + Nb, a C15 (cubic) Laves phase, is presented and the synchroshear of selec ted 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.