抄録
Offer Organization: Japan Society for the Promotion of Science, System Name: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B), Category: Grant-in-Aid for Young Scientists (B), Fund Type: -, Overall Grant Amount: - (direct: 3400000, indirect: 1020000)
Effect of ω phase on pseudoelasticity in β-Ti alloys was investigated in this study. Cyclic loading-unloading tensile tests were performed at various temperatures using special alloy; volume fraction of ω phase of this alloy is not affected by deformation temperature. Stress for inducing martensite decreases as cycle number at the range of -115 ～ 120℃ increases. Stress for reverse transformation also decreases as cycle number at -115℃ increases. These results imply that shuffling magnitude of ω phase affects pseudoelasticity of β-Ti alloy. Quantitative evaluation of shuffling magnitude was attempted by pair distribution function (PDF) analysis.