On the formation of martensite in front of cracks in pseudoelastic shape memory alloys

X. M. Wang; Y. F. Wang; A. Baruj; G. Eggeler; Z. F. Yue

doi:10.1016/j.msea.2004.11.029

On the formation of martensite in front of cracks in pseudoelastic shape memory alloys

X. M. Wang, Y. F. Wang, A. Baruj, G. Eggeler, Z. F. Yue

School of Mechanics,Civil Engineering and Architecture

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

In the present study we use finite element stress and strain analysis to study the stress induced martensitic transformations near the crack tip of compact tension (CT) specimens of pseudoelastic NiTi shape memory alloys. For this purpose, Aurichio's model for pseudoelasticity was implemented into the finite element code ABAQUS. The material parameters required in the model were adjusted according to loading/unloading data from pull-pull tests on pseudoelastic NiTi wires. Stress induced martensite forms near the notch of a CT specimen with no pre-crack. The presence of a sharp pre-crack alters the results considerably. The results presented in this paper provide some guidance for the interpretation of fracture mechanics tests on pseudoelastic shape memory alloys.

Original language	English
Pages (from-to)	393-398
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	394
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2004.11.029
State	Published - 15 Mar 2005

Keywords

CT specimen
Finite element analysis
Fracture Mechanics
Pseudoelasticity
Shape memory alloys

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10.1016/j.msea.2004.11.029

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abstract = "In the present study we use finite element stress and strain analysis to study the stress induced martensitic transformations near the crack tip of compact tension (CT) specimens of pseudoelastic NiTi shape memory alloys. For this purpose, Aurichio's model for pseudoelasticity was implemented into the finite element code ABAQUS. The material parameters required in the model were adjusted according to loading/unloading data from pull-pull tests on pseudoelastic NiTi wires. Stress induced martensite forms near the notch of a CT specimen with no pre-crack. The presence of a sharp pre-crack alters the results considerably. The results presented in this paper provide some guidance for the interpretation of fracture mechanics tests on pseudoelastic shape memory alloys.",

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AU - Wang, X. M.

AU - Wang, Y. F.

AU - Baruj, A.

AU - Eggeler, G.

AU - Yue, Z. F.

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AB - In the present study we use finite element stress and strain analysis to study the stress induced martensitic transformations near the crack tip of compact tension (CT) specimens of pseudoelastic NiTi shape memory alloys. For this purpose, Aurichio's model for pseudoelasticity was implemented into the finite element code ABAQUS. The material parameters required in the model were adjusted according to loading/unloading data from pull-pull tests on pseudoelastic NiTi wires. Stress induced martensite forms near the notch of a CT specimen with no pre-crack. The presence of a sharp pre-crack alters the results considerably. The results presented in this paper provide some guidance for the interpretation of fracture mechanics tests on pseudoelastic shape memory alloys.

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On the formation of martensite in front of cracks in pseudoelastic shape memory alloys

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Keywords

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