Silver- and Zirconium-added ternary and quaternary TiAu based high temperature shape memory alloys

A. Wadood, Y. Yamabe-Mitarai

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Low strength in B2 phase, incomplete shape memory effect and high cost of Au are obstacles for the use of Ti-50Au as a high temperature shape memory alloy. We investigated the effects of partial substitution of Ti with Zr and Au with Ag in Ti-Au on phase constitution, phase transformation, and high temperature thermo-mechanical and shape memory properties. Partial substitution of Ti with Zr in Ti-50Au and Ti-40Au-10Ag was found to improve the thermo-mechanical and shape memory effect. However, partial substitution of Au with Ag in Ti-50Au and Ti-50Au-10Zr was found to have negligible effects. Reasons for such different behavior of Zr- and Ag-added Ti-Au alloys are considered.

Original languageEnglish
Pages (from-to)1172-1177
Number of pages6
JournalJournal of Alloys and Compounds
Volume646
DOIs
Publication statusPublished - 2015
Externally publishedYes

Keywords

  • Partial substitution
  • Precipitation
  • Shape memory
  • Strengthening
  • TiAu

ASJC Scopus subject areas

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

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