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A New Variant Selection Criterion for Twin Variants in Titanium Alloys (Part 2)
Author(s) -
Schuman Christophe,
Bao Lei,
Lecomte Jean Sébastien,
Zhang Yudong,
Raulot Jean Marc,
Philippe Marie Jeanne,
Esling Claude
Publication year - 2012
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.201100282
Subject(s) - crystal twinning , materials science , selection (genetic algorithm) , compression (physics) , deformation (meteorology) , titanium , energy (signal processing) , metallurgy , mathematics , composite material , statistics , computer science , microstructure , artificial intelligence
Abstract A new selection criterion to explain the activation of the twinning variant is proposed. This criterion is based on the calculation of the deformation energy to create a primary twin. The calculation takes into account the effect of the grain size using a Hall–Petch type relation. This criterion allows to obtain a very good prediction for the twin family selection and twin variant selection. The calculations are compared with the experimental results obtained on T40 (ASTM grade 2) deformed by Channel Die compression.

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