Effect of cryogenic treatment on the fatigue crack propagation behavior of 7075 aluminum alloy

DOI

10.2991/meita-15.2015.82How to use a DOI?

Keywords

cryogenic treatment, fatigue crack propagation, XRD

Abstract

This paper studied the effect of cryogenic treatment on the fatigue crack propagation property of 7075 aluminum alloy at a series of cryogenic temperatures using mechanics testing. Three cryogenic temperatures were chosen for cryogenic treatment: -60 , -120 and -196 . The result showed that cryogenic treatment, especially at the cryogenic temperature of -120 , can significantly improve the fatigue performance. The X-ray diffraction (XRD) result showed the cryogenic treatment caused the XRD diffraction peak intensity of (200) obvious enhanced. The tendency of XRD diffraction peak intensity of (200) was in good consistence with that of fatigue crack propagation behavior of 7075 aluminum alloy after cryogenic treatment. Therefore, the mechanism for the improvement in fatigue crack propagation property is proposed to be the preferred orientation of crystalline grains through cryogenic treatment.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Di Xie
AU  - Sujun Wu
AU  - Juan Guan
AU  - Lin Yan
AU  - Jinyan Cui
PY  - 2015/08
DA  - 2015/08
TI  - Effect of cryogenic treatment on the fatigue crack propagation behavior of 7075 aluminum alloy
BT  - Proceedings of the 2015 International Conference on Materials Engineering and Information Technology Applications
PB  - Atlantis Press
SP  - 452
EP  - 458
SN  - 2352-5401
UR  - https://doi.org/10.2991/meita-15.2015.82
DO  - 10.2991/meita-15.2015.82
ID  - Xie2015/08
ER  -