Power-law creep in near-equiatomic nickel-titanium alloys

Scott M. Oppenheimer, Andrea R. Yung, David C. Dunand*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The compressive creep behavior of nickel-rich B2-NiTi (with 50-140 μm grain size) was studied over the stress range 3-11 MPa and the temperature range 950-1100 °C. The stress exponent (n = 2.7) and activation energy (Q = 155 kJ mol-1) are compared with a literature review of NiTi creep studies performed over lower temperature and/or higher stresses. Possible explanations for discrepancies between studies are discussed.

Original languageEnglish (US)
Pages (from-to)377-380
Number of pages4
JournalScripta Materialia
Volume57
Issue number5
DOIs
StatePublished - Sep 2007

Keywords

  • Creep
  • NiTi
  • Shape-memory alloys (SMA)

ASJC Scopus subject areas

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

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