Pseudoelasticity at elevated temperatures in [001] oriented Co 49Ni21Ga30 single crystals under compression

Jayaram Dadda, H. J. Maier, I. Karaman, H. E. Karaca, Y. I. Chumlyakov

Research output: Contribution to journalArticlepeer-review

74 Scopus citations

Abstract

Pseudoelasticity as a function of temperature of as-grown Co 49Ni21Ga30 [001] oriented single crystals was studied under compression. These alloys demonstrate a large pseudoelastic temperature range, greater than 385°C, with a maximum recoverable pseudoelastic strain of about 4%. We prov|%le[OK]ide an insight into the evolution of stress-strain behavior and corresponding stress-hysteresis with test temperatures, and the ramifications on the potential use of CoNiGa alloys as high temperature pseudoelastic alloys are presented.

Original languageEnglish
Pages (from-to)663-666
Number of pages4
JournalScripta Materialia
Volume55
Issue number8
DOIs
StatePublished - Oct 2006

Bibliographical note

Funding Information:
The work presented in this paper was funded by the Deutsche Forschungsgemeinschaft, US Army Research Office, Contract No DAAD 19-02-1-0261, US National Science Foundation – Division of Materials Research, Contract No. 0244126, and the US Civilian Research and Development Foundation, Grant No. RE1-2525-TO-03.

Keywords

  • CoNiGa
  • Microstructure
  • Pseudoelasticity
  • Shape memory alloy
  • Stress induced martensite

ASJC Scopus subject areas

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

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