Thermoelastic properties of super high temperature Ru-Ta shape memory alloy

Y. Furuya, H. Zhirong

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Equiatomic Ru-Ta alloy can show a thermoelastic phase transformation at super high temperatures above 1000°C. The temperature of shape memory effect of this alloy seems to be remarkably higher by two times than those of the formerly reported high temperature NiMnAl alloy and it seems very interesting as one of the new high temperature SMAs, however, detailed thermoelastic properties of Ru-Ta system alloy have not been clarified. The present paper investigates the basic material properties of Ru-Ta alloy, i.e. each transformation temperature, temperature hysteresis range, heat absorption by DSC measurement and metallurgical compounds by X-ray diffraction that depend on alloy composition by changing the Ru content from 46-54at%. Effect of heat treatment at solution temperature and aging temperature on thermoelastic phase transformation points is investigated and the thermal cyclic stability is also studied for engineering applications as high temperature actuator/sensor materials.

Original languageEnglish
JournalMaterials Research Society Symposium - Proceedings
Volume646
Publication statusPublished - 2001 Dec 1
Externally publishedYes
EventHigh Temperature Ordered Intermetallic Alloys IX - Boston, MA, United States
Duration: 2000 Nov 272000 Nov 29

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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