期刊
MATERIALS TRANSACTIONS
卷 50, 期 12, 页码 2744-2750出版社
JAPAN INST METALS
DOI: 10.2320/matertrans.MA200912
关键词
alpha ' martensite titanium alloys; cold groove rolling process; alpha ' processing; Young's modulus; tensile properties
资金
- Industrial Technology Research, International Category (NEDO Grant of Japan) [08E51003d]
Microstructure and mechanical properties of cold groove rolled alpha' Ti-V-Al and Ti-V-Sn alloys were investigated. Microstructure after solution treatment at 1223 K and quenching into ice water showed the acicular martensitic structure of alpha' phase for (Ti-12 mass%V)-2 mass%Al and (Ti-8 mass%V)-4 mass%Sn alloys and (alpha' + alpha '') phases for (Ti-12 mass%V)-6 mass%Sn alloy. After cold groove rolling at reduction of 75%, microstructure evolved into the equiaxed refined cell structure having the preferred rolling texture of < 10 (1) over bar0 > parallel to rolling direction. After cold groove rolling, Young's modulus decreases to 47.5 GPa, in contrast, tensile strength increases to more than 1000 MPa accompanying with work hardening and grain refinement. [doi:10.2320/matertrans.MA200912]
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