Effect of thermomechanical cycling in an Fe-Mn-Si-Cr-Ni shape memory alloy

Journal Article · Sat Oct 01 00:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90495-2· OSTI ID:7167582

Reyhani, M M; McCormick, P G ^[1]

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1. Univ. of Western Australia, Nedlands (Australia). Dept. of Mechanical and Materials Engineering

Previous studies on the effect of cycling in Fe-Mn-Si alloys have shown an increase in reversibility with increasing number of thermal cycles. In Fe-Mn-Si-Cr-Ni and Fe-Mn-Si-Co-Ni alloys, the shape recovery strain during thermomechanical cycling increased when the strain amplitude for each successive cycle is kept constant. Where the total strain (i.e., the sum of the transformation and permanent strain) is held constant, a small decrease in strain recovery with increasing number of cycles occurs. Nonetheless, an increase in reversibility with increasing number of thermomechanical cycles is a common feature for most studies. While previous studies have shown that training or thermomechanical transformation cycling may improve the shape recovery in these alloys, the mechanism is not still clear. Characterization of the transformation behavior during cycling is an important prerequisite for practical use of such alloys. In this paper the authors report microstructural changes during thermomechanical cycling of an Fe-Mn-Si-Cr-Ni shape memory alloy.

• OSTI ID: 7167582
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:7; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALLOYS
CHROMIUM ALLOYS
DATA
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MANGANESE ALLOYS
MICROSCOPY
MICROSTRUCTURE
NICKEL ALLOYS
NUMERICAL DATA
SHAPE MEMORY EFFECT
SILICON ALLOYS
THERMAL CYCLING
TRANSMISSION ELECTRON MICROSCOPY