Investigation of Deformation Mechanisms in β-Type Ti-35Nb-2Ta-3Zr Alloy via FSP Leading to Surface Strengthening
Document Type
Journal Article
Publisher
Springer Boston
School
School of Engineering
RAS ID
19673
Funders
NSF, National Science Foundation;
NSF, National Science Foundation
Grant Number
51302168, 81171738
Abstract
Friction-stir processing (FSP) is used to prepare Ti-35Nb-2Ta-3Zr alloys via different processing routes. Dislocation walls and tangles, deformation-induced α″ martensite, and deformation-induced ω phase are observed. The dominant deformation mechanisms are altered from deformation-induced α″ martensitic transformation and dislocation walls to twinning upon increasing the FSP passes. A reverse deformation-induced ω to β transformation and de-twinning process are observed together with grain refinement to the nanoscale. Meanwhile, compressive distortions along [0001]ω direction are favorable for the transformation from ω to β.
DOI
10.1007/s11661-015-3089-8
Access Rights
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Comments
Wang, L., Qu, J., Chen, L., Meng, Q., Zhang, L.-C., Qin, J., Zhang, D., Lu, W. (2015). Investigation of Deformation Mechanisms in β-Type Ti-35Nb-2Ta-3Zr Alloy via FSP Leading to Surface Strengthening in Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 46(11), 4813-4818. Available here.