Lenticular twinning within α’ martensite in Ti-6Al-4V at early deformation stage
Document Type
Journal Article
Publication Title
Materialia
Volume
30
Publisher
Elsevier
School
School of Engineering / Centre for Advanced Materials and Manufacturing
RAS ID
61963
Funders
National Natural Science Foundation of China / Natural Science Foundation of Shanghai / Foundation of Xi’an Key Laboratory of High-Performance Titanium Alloy / Major Special Science and Technology Project of Yunnan Province
Abstract
Twinning in a’ martensite in titanium alloys often occurs during rapid cooling or thermal cycling such as additive manufacturing process. This work reported α’ martensitic microstructure formed in Ti-6Al-4V alloy after room-temperature compression to ∼5% strain. Large-scale lenticular deformation twins were observed in martensite for the first time, which were evidently different in morphology and twinning system from nanotwins in quenched martensite. The emergence of such twins at only ∼5% strain resulted from variant selection and larger thickness of martensite and different stress state in martensite during deformation.
DOI
10.1016/j.mtla.2023.101838
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Comments
Zhang, B. H., Yang, Y., Zhao, Z. B., Zhang, K., Xin, S. W., Zhang, S. Y., . . . Zhang, L. C. (2023). Lenticular twinning within α’ martensite in Ti-6Al-4V at early deformation stage. Materialia, 30, article 101838. https://doi.org/10.1016/j.mtla.2023.101838