Superelasticity of TiPdNi Alloys with and without Rare Earth Ce Addition

J Mater Sci Technol ›› 2003, Vol. 19 ›› Issue (02): 179-182.

• Research Articles • Previous Articles Next Articles

Superelasticity of TiPdNi Alloys with and without Rare Earth Ce Addition

Qingchao TIAN, Jiansheng WU, Yifeng CHENG

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

Received:1900-01-01 Revised:1900-01-01 Online:2003-03-28 Published:2009-10-10
Contact: Qingchao TIAN

Abstract

Abstract: Ti50.6Pd30Ni19.4 and Ti51Pd28Ni21(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(Ce) alloy significantly delays recrystallization, increases yied strength and elastic modulus, but the superelasticity is poor.

Key words: TiNi-Pd, Shape memory alloy, Superelasticity

Qingchao TIAN, Jiansheng WU, Yifeng CHENG. Superelasticity of TiPdNi Alloys with and without Rare Earth Ce Addition[J]. J Mater Sci Technol, 2003, 19(02): 179-182.

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Superelasticity of TiPdNi Alloys with and without Rare Earth Ce Addition

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