Superelasticity of TiPdNi Alloys with and without Rare Earth Ce Addition

材料科学技术（英）, 2003, 19(2): 179-182.

^1, , ^2, , ^3,

1.Key Laboratory of the Ministry of Education for High Temperature Materials and Tests, School of Materials Science and Engineering, Shanghai Jiao Tong Univ., Shanghai 200030, China

2.Key Laboratory of the Ministry of Education for High Temperature Materials and Tests, School of Materials Science and Engineering, Shanghai Jiao Tong Univ., Shanghai 200030, China

3.Key Laboratory of the Ministry of Education for High Temperature Materials and Tests, School of Materials Science and Engineering, Shanghai Jiao Tong Univ., Shanghai 200030, China

基金项目: 上海市科委资助项目(00JC14055)

Superelasticity of TiPdNi Alloys with and without Rare Earth Ce Addition

Keywords： TiNi-Pd

Ti50.6Pda0Ni19.4 and Ti51Pd2sNi21 (Ce) alloys have been prepared under various temperatures for long time annealing. Differential scanning calorimetery (DSC), X-ray diffraction (XRD) and tensile test were employed to investigate the phase transformation behavior and superelasticity of the alloys. It has been found that the phase transformation temperature of Ti50.6Pd30Ni19.4 is about 40℃ higher than that of Ti51Pd28Ni21(Ce), and do not change much with different annealed temperature. Obvious superelasticity is retained in Ti50.6Pd30Ni19.4 alloy annealed at 400℃ for 18 h, and annealing at higher temperature shows a deterioration of this property. The Ce addition in Ti51Pd28Ni21 alloy significantly delays recrystallization, increases yied strength and elastic modulus, but the superelasticity is poor.

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Superelasticity of TiPdNi Alloys with and without Rare Earth Ce Addition

参考文献