Effects of aging on [111] oriented NiTiHfPd single crystals under compression

Karaca H., ACAR E., Basaran B., Noebe R., Bigelow G., Garg A., ...More

SCRIPTA MATERIALIA, vol.67, pp.728-731, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67
  • Publication Date: 2012
  • Doi Number: 10.1016/j.scriptamat.2012.06.028
  • Journal Name: SCRIPTA MATERIALIA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.728-731
  • Keywords: Shape memory alloys (SMA), Phase transformation, Damping, Ageing, High strength shape memory alloys, SHAPE-MEMORY ALLOYS, NI, BEHAVIOR, TRANSFORMATION
  • Erciyes University Affiliated: No

Abstract

The effects of aging on the shape memory properties of [1 1 1] oriented Ni45.3Ti29.7Hf20Pd5 single crystals were investigated under compression. Thermal cycling under stress and superelasticity experiments were conducted after 3 h aging at 550 and 600 degrees 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. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.