Stress and Strain Fields Associated with the Formation of α” in near-β Titanium Alloys

A phase field model is implemented and used to investigate the stress and strain build up during the isothermal formation of α” in near-β Ti alloys. The predicted strains suggest that α” can be considered as some deformed hcp α’. The formation of multi-variants self-accommodating triangular arrangem...

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Published inMaterials today : proceedings Vol. 2; no. Supplement 3; pp. S589 - S592
Main Authors Appolaire, B., Settefrati, A., Aeby-Gautier, E.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2015
Elsevier
Subjects
Elastiticy
Engineering Sciences
Martensite
Materials
Orthorhombicity
Oxygen
Ti alloys
Elastiticy
Ti alloys
Oxygen
Martensite
Orthorhombicity
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Summary:A phase field model is implemented and used to investigate the stress and strain build up during the isothermal formation of α” in near-β Ti alloys. The predicted strains suggest that α” can be considered as some deformed hcp α’. The formation of multi-variants self-accommodating triangular arrangements commonly observed in these alloys does not change the previous conclusion. Moreover, it is shown that diffusion, most likely of oxygen, is required to best reproduce the observed microstructures.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2015.07.353