Characteristics of Ti50Pd30Ni20 high-temperature shape memory alloy

D. Golberg, Ya Xu, Y. Murakami, S. Morito, K. Otsuka, T. Ueki, H. Horikawa

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79 Citations (Scopus)


The decrease in critical stress for slip with increasing temperature leads to the introduction of permanent strain and thus deteriorates shape memory (SM) characteristics of high-temperature SM alloys. Thermomechanical treatment consisting of cold-rolling and subsequent annealing at various temperatures, was applied for the first time to improve the high-temperature SM characteristics of the Ti50Pd30Ni20 alloy. Then, a systematic study of transformation temperatures, microstructure and associated mechanical behaviour at 443-548K was carried out. The remarkable improvement in SM characteristics was found for the alloy cold-rolled to 24-25% reduction in thickness and annealed at 673K for 3.6 ks. In addition, superelasticity was observed for the first time in this alloy. Finally, the key factor for improvement of high-temperature SM characteristics in the alloy is pointed out.

Original languageEnglish
Pages (from-to)35-46
Number of pages12
Issue number1
Publication statusPublished - 1995
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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