Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

Effect of Electric Field on Aging Phase Transformation in Al-Zn-Mg-Cu Alloys

Authors
Chun-Mei Li, Zhong-Jing Xie, Zhi-Qian Chen, Xiao Li, Hong He, Nan-Pu Cheng
Corresponding Author
Chun-Mei Li
Available Online June 2016.
DOI
10.2991/ame-16.2016.58How to use a DOI?
Keywords
Aging phase transformation, Electric field, First-principles, Al-Zn-Mg-Cu alloys
Abstract

The effect of electric fields on the aging phase transformation of Al-Zn-Mg-Cu alloys is investigated with the first-principles method combined with vacancy mechanism. The effects of external electric field with different direction on aging phase transformation and electron structure are analyzed. Results show that the Gibbs free energy of the ' phase exhibits different responses to the different external electric directions. The orientation precipitation of the ' phase can be activated during aging with an external electric field lower than 26MV/cm. The calculation of density of states provides an explanation for the different responses of the GP zones, ' and phases to the external electric field. And a vacancy mechanism is proposed to explain the microstructural evolution during aging in an electric field.

Copyright
© 2016, 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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Volume Title
Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)
Series
Advances in Engineering Research
Publication Date
June 2016
ISBN
978-94-6252-208-4
ISSN
2352-5401
DOI
10.2991/ame-16.2016.58How to use a DOI?
Copyright
© 2016, 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/).

Cite this article

TY  - CONF
AU  - Chun-Mei Li
AU  - Zhong-Jing Xie
AU  - Zhi-Qian Chen
AU  - Xiao Li
AU  - Hong He
AU  - Nan-Pu Cheng
PY  - 2016/06
DA  - 2016/06
TI  - Effect of Electric Field on Aging Phase Transformation in Al-Zn-Mg-Cu Alloys
BT  - Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)
PB  - Atlantis Press
SP  - 344
EP  - 355
SN  - 2352-5401
UR  - https://doi.org/10.2991/ame-16.2016.58
DO  - 10.2991/ame-16.2016.58
ID  - Li2016/06
ER  -