期刊
APPLIED PHYSICS LETTERS
卷 94, 期 6, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3078521
关键词
compressive testing; dislocations; martensitic transformations; niobium alloys; plastic deformation; tantalum alloys; texture; titanium alloys; twinning; zirconium alloys
Ti-22.4Nb-0.73Ta-2.0Zr-1.34O (at. %) alloy after cold compression to similar to 5.2% strain was investigated. The alloy exhibited multiple plastic deformation mechanisms, including the stress-induced alpha(') martensitic (SIM alpha(')) and omega phase transformations, 1/2 < 111 > dislocations slipping on the {112}beta planes as well as {332}< 113 >beta and {112}< 111 >beta twinning, which have not previously been reported to coexist in a titanium alloy. It was also found that beta phase with the {200} planes vertical to the compression direction was almost completely consumed away by a beta -> SIM alpha(') transformation, and a (100) texture of SIM alpha(') formed.
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