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Effect of Final Thermo-mechanical Treatment on the microstructure and property of Al-5.2Mg-3.1Zn(wt.%) aluminum alloy
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State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing

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    Abstract:

    The effect of final thermo-mechanical treatment on the microstructure and property of Al-5.2Mg-3.1Zn(wt.%) aluminum alloy have been studied. The effect of deformation parameter on the final aging treatment has been studied by Vickers hardness tests. Observations under optical microscopy and transmission electron microscopy show that there are lots of dislocation structure and fibrous structure in the microstructure, and their volume fractions depend on the deformation parameter. The tensile test reveals that higher deformation temperature benefits the higher strength of sheets, but decreases the elongation. However, the amount of deformation has the completely oppsite effect on the tensile property. The increase of deformation temperature and deformation amount both increase the intergranular corrosion resistance of sheets.

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[Qingwei Ding, Di Zhang, Shengli Hou, Yanlin Pan, Jishan Zhang. Effect of Final Thermo-mechanical Treatment on the microstructure and property of Al-5.2Mg-3.1Zn(wt.%) aluminum alloy[J]. Rare Metal Materials and Engineering,2019,48(8):2661~2666.]
DOI:10.12442/j. issn.1002-185X.20181207

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History
  • Received:November 30,2018
  • Revised:December 18,2018
  • Adopted:January 09,2019
  • Online: September 05,2019