Title: The evaluation of reactive stresses in TiNi shape memory alloys

Authors: Peter Filip, Karel Mazanec

Addresses: Technical University of Ostrava, Institute of Metals Science, TR. 17. listopadu, 708 33 Ostrava-Poruba, Czech Republic. ' Technical University of Ostrava, Institute of Metals Science, TR. 17. listopadu, 708 33 Ostrava-Poruba, Czech Republic

Abstract: The reactive stresses of tensile prestrained specimens were investigated in two hot-rolled TiNi alloys. The Alloy A, which contained 50.8 at% Ni, exhibited pseudoelastic properties at room temperature. Alloy B (49.5 at% Ni) had a martensitic structure at room temperature. Some of the alloy B specimens were further cold-rolled with a reduction of 15%. These were then labelled C specimens. The reactive stresses are higher if the change of the shape is accompanied by a stress-induced martensitic transformation (A specimens). The reactive stressed attained with the C specimens were remarkably higher than those attained with the A and B specimens

Keywords: cold rolling; reactive stresses; shape memory effect; TiNi alloys; titanium; nickel; martensitic transformation; shape memory alloys; SMA.

DOI: 10.1504/IJMPT.1995.036442

International Journal of Materials and Product Technology, 1995 Vol.10 No.1/2, pp.98 - 105

Published online: 03 Nov 2010 *

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