Abstract
The processing of age-hardenable aluminum alloys by equal-channel angular pressing (ECAP) was investigated using three different Al-Zn-Mg alloys. The results show that it is relatively easy to conduct the ECAP at an elevated temperature of 473 K, but this leads to a weakening of the alloy rather than a strengthening. The processing by ECAP may be performed successfully at room temperature provided it is conducted fairly quickly (within ~10 minutes) after quenching from the solution treatment. It is necessary also to optimize the solution treatment conditions for each alloy composition. Under optimum conditions, good strengthening is achieved even after a single pass in ECAP.
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Acknowledgments
This work was supported, in part, by the United States Army Research Office under Grant No. W911NF-08-1-0201 (ZCD, CX, TGL) and, in part, by the Hungarian Scientific Research Fund, OTKA, under Grant No. K67692 (NQC). In addition, NQC is grateful for the support of the Hungarian–American Enterprise Scholarship Fund.
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This article is based on a presentation given in the symposium entitled “Mechanical Behavior of Nanostructured Materials,” which occurred during the TMS Spring Meeting in San Francisco, CA, February 15–19, 2009, under the auspices of TMS, the TMS Electronic, Magnetic, and Photonic Materials Division, the TMS Materials Processing and Manufacturing Division, the TMS Structural Materials Division, the TMS Nanomechanical Materials Behavior Committee, the TMS Chemistry and Physics of Materials Committee, and the TMS/ASM Mechanical Behavior of Materials Committee.
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Duan, Z.C., Chinh, N.Q., Xu, C. et al. Developing Processing Routes for the Equal-Channel Angular Pressing of Age-Hardenable Aluminum Alloys. Metall Mater Trans A 41, 802–809 (2010). https://doi.org/10.1007/s11661-009-0020-1
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DOI: https://doi.org/10.1007/s11661-009-0020-1