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A Study of Twin Variant Selection and Twin Growth in Titanium
Author(s) -
Bao Lei,
Schuman Christophe,
Lecomte JeanSébastien,
Philippe MarieJeanne,
Zhao Xiang,
Esling Claude
Publication year - 2011
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201100055
Subject(s) - selection (genetic algorithm) , twin study , electron backscatter diffraction , crystal twinning , identical twins , compression (physics) , genetics , biology , materials science , computer science , crystallography , chemistry , artificial intelligence , microstructure , heritability , composite material
An in depth analysis on twin variant selection and twin growth character during compression by means of “interrupted in situ” EBSD orientation measurement was carried out. An experimental verification and geometrical analysis of the use of Schmid's law as a criterion for selecting twin variants was performed, and proved to be conclusive. Twin variants having Schmid factors higher than 0.4 have a good chance to be activated. The twin growth exhibits two modes: {11–22} twins show a tendency to multiple variants system (MVS) and {10–12} twins show predominant variant system (PVS). The Schmid factor plays an important role in MVS and PVS.