Crystallographic characters of {11¯22} twin-twin junctions in titanium - CNRS - Centre national de la recherche scientifique Access content directly
Journal Articles Philosophical Magazine Letters Year : 2017

Crystallographic characters of {11¯22} twin-twin junctions in titanium

Abstract

Contraction twins that are commonly activated in α-titanium interact to each other and form three types of twin–twin junctions (, , TTJs) corresponding to the crystallography of six twin variants (i = 1,2, … , 6). We detected 243 TTJs in rolled pure α-titanium sheets. Electron backscatter diffraction analysis reveals that TTJs are profuse, 79.8% among three types while and TTJs take up 17.7 and 2.5%. Twin transmission does not occur. Consequently, boundaries associated with twin–twin interactions block twin propagation and influence twin growth. We explain structural features of TTJs according to the Schmid factor analysis and the reaction mechanism of twinning dislocations. The knowledge regarding TTJs provides insight for improving the predictive capability of meso/macro-scale crystal plasticity models for hexagonal metals.
Fichier principal
Vignette du fichier
Xu_2017_Crystallographic characters of 1122 Twin.pdf (1.12 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03864200 , version 1 (07-12-2022)

Identifiers

Cite

Shun Xu, Mingyu Gong, Xinyan Xie, Yue Liu, Christophe Schuman, et al.. Crystallographic characters of {11¯22} twin-twin junctions in titanium. Philosophical Magazine Letters, 2017, 97 (11), pp.429-441. ⟨10.1080/09500839.2017.1402132⟩. ⟨hal-03864200⟩
44 View
31 Download

Altmetric

Share

Gmail Facebook X LinkedIn More