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Simulation of pseudo‐plasticity in shape‐memory‐alloys
Author(s) -
Junker Philipp,
Hackl Klaus
Publication year - 2011
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201110187
Subject(s) - martensite , shape memory alloy , austenite , materials science , property (philosophy) , plasticity , microstructure , deformation (meteorology) , metallurgy , composite material , philosophy , epistemology
The name shape memory originates from the material's capability to recover its original shape after an apparent plastic deformation. The secret of this property lies in the specific microstructure. During mechanical loading, alloys of this particular kind change their crystallographic structure from randomly orientated martensite to ordered martensite. With austenite as high‐temperature inter‐state induced by heat supply, a recovery from the ordered to the unordered martensite is possible. This is accompanied by a macroscopic "healing" process. We apply our material model for shape‐memory alloys to this special property and present numerical results. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)