Effect of Pre-strain on Martensitic Transformation in a Ti47.6Ni46.6Nbt6.0 Superelastic Alloy
The effect of applied strain on martensitic transformation in a superelastic Ti47.6Ni46.4Nb6.0 alloy at room temperature was investigated by tensile tests, differential scanning calorimetry measurements, and X-ray diffraction. Reverse transformation starting (As) and finishing (Af) temperatures increased with the applied of tensile-strain over 13％, the undeformed specimen showing As = -29.2℃ and Af= 17.9℃, while the 13％ pre-deformed alloy exhibited As = 37.1℃ and Af = 40.2℃. Furthermore, the values of the As and Af for the pre-deformed alloy almost recovered to those of the undeformed alloy when heated to about 42℃ and then showed superelasticity again at room temperature. This characteristic behavior is significant for application in sensors, actuators, and medical devices.
T. Takagi Y. Sutou M. Suzuki R. Kainuma K. Yamauchi K. Ishida
Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-yama 02, Se Tohoku University Biomedical Engineering Research Organization, TUBERO 2-1 Seiryo-machi, Aoba-ku, Se Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-yama 02, Se Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, JAPAN
国际会议
厦门
英文
705-710
2006-11-08（万方平台首次上网日期，不代表论文的发表时间）