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High Temperature Materials and Processes

Editor-in-Chief: Fukuyama, Hiroyuki

Editorial Board: Waseda, Yoshio / Fecht, Hans-Jörg / Reddy, Ramana G. / Manna, Indranil / Nakajima, Hideo / Nakamura, Takashi / Okabe, Toru / Ostrovski, Oleg / Pericleous, Koulis / Seetharaman, Seshadri / Straumal, Boris / Suzuki, Shigeru / Tanaka, Toshihiro / Terzieff, Peter / Uda, Satoshi / Urban, Knut / Baron, Michel / Besterci, Michael / Byakova, Alexandra V. / Gao, Wei / Glaeser, Andreas / Gzesik, Z. / Hosson, Jeff / Masanori, Iwase / Jacob, Kallarackel Thomas / Kipouros, Georges / Kuznezov, Fedor


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Open Access
Online
ISSN
2191-0324
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Volume 33, Issue 4

Issues

Hot Deformation and Processing Maps of 7005 Aluminum Alloy

Mingliang Wang
  • Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai University, Xining 810016, China
  • Other articles by this author:
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/ Peipeng Jin
  • Corresponding author
  • Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai University, Xining 810016, China
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  • Other articles by this author:
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/ Jinhui Wang
  • Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai University, Xining 810016, China
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Published Online: 2013-11-29 | DOI: https://doi.org/10.1515/htmp-2013-0083

Abstract

The deformation behavior of 7005 alloy was studied by hot compression tests. The processing map was constructed by superimposing the instability map over the power dissipation map at a strain of 0.7 using the corrected flow stress data to eliminate the effect of friction. Microstructural examination was performed for validation. It can be found that the flow stresses increase with the decrease of deformation temperature or the increase of strain rate. At the relatively high strain rates, the material exhibits flow instability manifesting as adiabatic shear bands or flow localization. A large volume of coarse precipitations distributing in the grain boundaries in one of the peak efficiency domains: 275–325 °C/0.0005–0.001 s−1, which may result in inter-granular corrosion and spalling layer, should be avoided in the final deformed alloy. The optimum hot working domain is the temperature range of 400–450 °C and strain rate range of 0.0005–0.005 s−1, at which DRX is identified.

Keywords: hot deformation; processing map; dynamic re-crystallization; microstructure

PACS: 83.50.Uv

About the article

Received: 2013-08-30

Accepted: 2013-10-21

Published Online: 2013-11-29

Published in Print: 2014-08-01


Citation Information: High Temperature Materials and Processes, Volume 33, Issue 4, Pages 369–375, ISSN (Online) 2191-0324, ISSN (Print) 0334-6455, DOI: https://doi.org/10.1515/htmp-2013-0083.

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