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Metals 2016, 6(8), 183; doi:10.3390/met6080183

High-Temperature Compressive Resistance and Mechanical Properties Improvement of Strain-Induced Melt Activation-Processed Al-Mg-Si Aluminum Alloy

Department of Materials Science and Engineering, National Cheng Kung University, Tainan 701, Taiwan
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Author to whom correspondence should be addressed.
Academic Editor: Nong Gao
Received: 13 June 2016 / Revised: 12 July 2016 / Accepted: 21 July 2016 / Published: 5 August 2016
(This article belongs to the Special Issue Aluminum Alloys)
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Abstract

Even though the high-temperature formability of Al alloys can be enhanced by the strain-induced melt activation (SIMA) process, the mechanical properties of the formed alloys are necessary for estimation. In this research, a modified two-step SIMA (TS-SIMA) process that omits the cold working step of the traditional SIMA process is adopted for the 6066 Al-Mg-Si alloy to obtain globular grains with a short-duration salt bath. The high-temperature compressive resistance and mechanical properties of TS-SIMA alloys were investigated. The TS-SIMA alloys were subjected to artificial aging heat treatment to improve their mechanical properties. The results show that the TS-SIMA process can reduce compression loading by about 35%. High-temperature compressive resistance can be reduced by the TS-SIMA process. After high-temperature compression, the mechanical properties of the TS-SIMA alloys were significantly improved. Furthermore, artificial aging treatment can be used to enhance formed alloys via the TS-SIMA process. After artificial aging treatment, the mechanical properties of TS-SIMA alloys are comparable to those of general artificially-aged materials. View Full-Text
Keywords: aluminum alloy; Strain-Induced Melt Activation (SIMA); mechanical properties aluminum alloy; Strain-Induced Melt Activation (SIMA); mechanical properties
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Lin, C.-W.; Hung, F.-Y.; Lui, T.-S. High-Temperature Compressive Resistance and Mechanical Properties Improvement of Strain-Induced Melt Activation-Processed Al-Mg-Si Aluminum Alloy. Metals 2016, 6, 183.

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