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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 31, Issue 6

Issues

High Temperature Tensile Properties of Equal Channel Angular Pressed Al-Zn-Mg-Cu Alloy

Süleyman Tekeli
  • Corresponding author
  • Technology Faculty, Metallurgical and Materials Engineering Department, Gazi University, Beşevler, Ankara, Turkey
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/ Ahmet Güral
  • Technical Education Faculty, Materials Science Department, Gazi University, Beşevler, Ankara, Turkey
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Published Online: 2012-12-13 | DOI: https://doi.org/10.1515/htmp-2011-0140

Abstract

In this study, ultra fine-grained microstructure was produced in Al–Zn–Mg–Cu alloy by equal channel angular pressing (ECAP) at 200 °C and a pressing speed of 2 mm s−1 using route C. The microstructure of the specimens was characterized by transmission and scanning electron microscopes. The results showed that the mean grain size of the specimens effectively decreased with increasing pass number. That is, while the grain size of unECAPed specimen was 10 µm, this value decreased to 300 nm after 14 passes. High temperature tensile tests were carried out at a strain rate of 1 × 10− 2 and temperature of 250 °C in the specimens with different pass number. It was seen that the flow stress decreased and the elongation to failure significantly increased with increasing pass number. The highest elongation to failure value of 90% was obtained in the specimen after 14 passes.

Keywords: Equal-channel angular pressing; ultra fine grained structures; aluminum alloys; high temperature tensile properties

About the article

Technology Faculty, Metallurgical and Materials Engineering Department, Gazi University, 06500, Beşevler, Ankara, Turkey


Received: 2011-12-13

Accepted: 2011-12-31

Published Online: 2012-12-13

Published in Print: 2012-12-14


Citation Information: , Volume 31, Issue 6, Pages 675–678, ISSN (Online) 2191-0324, ISSN (Print) 0334-6455, DOI: https://doi.org/10.1515/htmp-2011-0140.

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©[2012] by Walter de Gruyter Berlin Boston.Get Permission

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