Effects of aging on [1 1 1] oriented NiTiHfPd single crystals under compression

H. E. Karaca, E. Acar, B. Basaran, R. D. Noebe, G. Bigelow, A. Garg, F. Yang, M. J. Mills, Y. I. Chumlyakov

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The effects of aging on the shape memory properties of [1 1 1] oriented Ni 45.3Ti 29.7Hf 20Pd 5 single crystals were investigated under compression. Thermal cycling under stress and superelasticity experiments were conducted after 3 h aging at 550 and 600 °C and were found to be dependent on aging condition. Reversible strain of up to 2.2% and a work output of 33 J cm -3 were possible at an ultra-high stress level of 1500 MPa.

Original languageEnglish
Pages (from-to)728-731
Number of pages4
JournalScripta Materialia
Volume67
Issue number7-8
DOIs
StatePublished - Oct 2012

Bibliographical note

Funding Information:
This work was supported in part by the NASA Fundamental Aeronautics Program under the Supersonics Project, Dale Hopkins, API, the NASA EPSCOR program under Grant No. NNX11AQ31A , NASA Kentucky EPSCoR program under Grant No. NNX10AV39A, Kentucky Statewide EPSCoR and RFBR Project with Grant No. 10-03-00154a .

Keywords

  • Ageing
  • Damping
  • High strength shape memory alloys
  • Phase transformation
  • Shape memory alloys (SMA)

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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