Prediction of the initial crack tip microstructure in a single crystal of CuAlNi

Galyna M. Vasko; Perry H Leo; Thomas W Shield

doi:10.1115/IMECE1999-0934

Prediction of the initial crack tip microstructure in a single crystal of CuAlNi

Galyna M. Vasko
, Perry H Leo
, Thomas W Shield

Aerospace Engineering and Mechanics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The austenite to martensite pseudoelastic transformation induced by the anisotropic elastic crack tip stress field in a single crystal of shape memory alloy is considered. It is proposed that the orientation of the initial austenite-martensite interface that forms can be predicted based on knowledge of the stress field, the crystallography of the transformation and one of two selection criteria. These criteria are based on the work of formation of the martensite in stress field and the crack opening displacement the martensite causes at the crack. Predictions of the criteria are compared to experiments on three single edge notched CuAlNi single crystal specimens. Results indicate that the maximum work criterion accurately predicts the orientation of the austenite-martensite interfaces that initially form near a crack.

Original language	English (US)
Title of host publication	American Society of Mechanical Engineers, Applied Mechanics Division, AMD
Publisher	American Society of Mechanical Engineers (ASME)
Pages	29-43
Number of pages	15
ISBN (Electronic)	9780791816547
ISBN (Print)	0791816540
DOIs	https://doi.org/10.1115/IMECE1999-0934
State	Published - Dec 1 1999
Event	Finite Thermoelasticity - 1999 (The ASME International Mechanical Engineering Congress and Exposition) - Nashville, TN, USA Duration: Nov 14 1999 → Nov 19 1999

Publication series

Name	American Society of Mechanical Engineers, Applied Mechanics Division, AMD
Volume	236
ISSN (Print)	0160-8835

Other

Other	Finite Thermoelasticity - 1999 (The ASME International Mechanical Engineering Congress and Exposition)
City	Nashville, TN, USA
Period	11/14/99 → 11/19/99

Bibliographical note

Publisher Copyright:
© 1999 American Society of Mechanical Engineers (ASME). All rights reserved.

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10.1115/IMECE1999-0934

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Vasko, G. M., Leo, P. H., & Shield, T. W. (1999). Prediction of the initial crack tip microstructure in a single crystal of CuAlNi. In American Society of Mechanical Engineers, Applied Mechanics Division, AMD (pp. 29-43). (American Society of Mechanical Engineers, Applied Mechanics Division, AMD; Vol. 236). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE1999-0934

Prediction of the initial crack tip microstructure in a single crystal of CuAlNi. / Vasko, Galyna M.; Leo, Perry H; Shield, Thomas W.
American Society of Mechanical Engineers, Applied Mechanics Division, AMD. American Society of Mechanical Engineers (ASME), 1999. p. 29-43 (American Society of Mechanical Engineers, Applied Mechanics Division, AMD; Vol. 236).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Vasko, GM, Leo, PH & Shield, TW 1999, Prediction of the initial crack tip microstructure in a single crystal of CuAlNi. in American Society of Mechanical Engineers, Applied Mechanics Division, AMD. American Society of Mechanical Engineers, Applied Mechanics Division, AMD, vol. 236, American Society of Mechanical Engineers (ASME), pp. 29-43, Finite Thermoelasticity - 1999 (The ASME International Mechanical Engineering Congress and Exposition), Nashville, TN, USA, 11/14/99. https://doi.org/10.1115/IMECE1999-0934

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abstract = "The austenite to martensite pseudoelastic transformation induced by the anisotropic elastic crack tip stress field in a single crystal of shape memory alloy is considered. It is proposed that the orientation of the initial austenite-martensite interface that forms can be predicted based on knowledge of the stress field, the crystallography of the transformation and one of two selection criteria. These criteria are based on the work of formation of the martensite in stress field and the crack opening displacement the martensite causes at the crack. Predictions of the criteria are compared to experiments on three single edge notched CuAlNi single crystal specimens. Results indicate that the maximum work criterion accurately predicts the orientation of the austenite-martensite interfaces that initially form near a crack.",

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N2 - The austenite to martensite pseudoelastic transformation induced by the anisotropic elastic crack tip stress field in a single crystal of shape memory alloy is considered. It is proposed that the orientation of the initial austenite-martensite interface that forms can be predicted based on knowledge of the stress field, the crystallography of the transformation and one of two selection criteria. These criteria are based on the work of formation of the martensite in stress field and the crack opening displacement the martensite causes at the crack. Predictions of the criteria are compared to experiments on three single edge notched CuAlNi single crystal specimens. Results indicate that the maximum work criterion accurately predicts the orientation of the austenite-martensite interfaces that initially form near a crack.

AB - The austenite to martensite pseudoelastic transformation induced by the anisotropic elastic crack tip stress field in a single crystal of shape memory alloy is considered. It is proposed that the orientation of the initial austenite-martensite interface that forms can be predicted based on knowledge of the stress field, the crystallography of the transformation and one of two selection criteria. These criteria are based on the work of formation of the martensite in stress field and the crack opening displacement the martensite causes at the crack. Predictions of the criteria are compared to experiments on three single edge notched CuAlNi single crystal specimens. Results indicate that the maximum work criterion accurately predicts the orientation of the austenite-martensite interfaces that initially form near a crack.

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Prediction of the initial crack tip microstructure in a single crystal of CuAlNi

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