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Hydrogen Desorption From 6061 Aluminum Alloy During Deformation Detected by a New Apparatus

[+] Author Affiliations
Lin Zhang, Chengshuang Zhou

Zhejiang University of Technology, Hangzhou, China

Jinyang Zheng

Zhejiang University, Hangzhou, China

Bai An

National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan

Paper No. PVP2016-63389, pp. V01AT01A045; 8 pages
doi:10.1115/PVP2016-63389
From:
  • ASME 2016 Pressure Vessels and Piping Conference
  • Volume 1A: Codes and Standards
  • Vancouver, British Columbia, Canada, July 17–21, 2016
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-5035-0
  • Copyright © 2016 by ASME

abstract

Hydrogen desorption from 6061 aluminum alloy during deformation was investigated by a new type of ultrahigh vacuum apparatus. The new apparatus which combined tension and outgassing experiments can be used to measure hydrogen desorption from the specimen during deformation. Outgassing corresponded to the deformation process, which initially released surface-adsorbed hydrogen. After elastic deformation, the as-received specimen released hydrogen because of the rupturing of the surface oxide layer. The hydrogen-charged specimen showed lower hydrogen concentration and hydrogen release rate than the as-received specimen. The second hydrogen release peak was due to the hydrogen accumulation at the interface between the oxide layer and matrix. The irregular sharp hydrogen release peaks resulted from the hydrogen bubble exposed to the surface during the rupture of the surface oxide layer.

Copyright © 2016 by ASME

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