Effects of Cold Rolling on the Microstructure and Mechanical Properties of High-Zn-Content Al-Zn-Mg-Sc Alloys

被引：0
作者：
J. J. Xiao
C. Y. Liu
K. Cao
机构：
[1] Guilin University of Technology,Key Laboratory of New Processing Technology for Nonferrous Metal and Materials, Ministry of Education
来源：
Journal of Materials Engineering and Performance | 2024年 / 33卷
关键词：
Al-Zn-Mg-Sc alloy; mechanical properties; microstructure; rolling;
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学科分类号：
摘要：
In this study, the effects of chemical composition and process routes on the microstructure and mechanical properties of high-Zn-content Al-Zn-Mg-Sc alloys were investigated. Aging led to the formation of nano-sized Zn phases in the grain interior and large Zn phases at the grain boundary (GB) or Al/Al3Sc interfaces in the Al-20Zn-0.5Mg-0.5Sc (20Zn-0.5Mg) alloy, and cold rolling before aging (Pre-CR) could accelerate this precipitation. Compared with the 20Zn-0.5Mg alloy, the Al-15Zn-1Mg-0.5Sc (15Zn-1Mg) alloy exhibited a more difficult Zn phase precipitation during aging, and only pre-CR could lead to the formation of intracrystalline Zn phases in this alloy during artificial aging. The transition of the η′ phases into η phases without coarsening of Zn phases occurred at the GB or Al/Al3Sc interfaces of the 15Zn-1Mg alloy during artificial aging. Pre-CR could improve the mechanical properties of high-Zn-content Al-Zn-Mg-Sc alloys, and the significant evolution of Zn phases in the 20Zn-0.5Mg alloy during processing in different routes conferred this alloy a wider range of mechanical properties than the 15Zn-1Mg alloy.
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页码：1250 / 1261
页数：11
相关论文
共 174 条
  • [1] Straumal BB(2004)Formation of Nanograined Structure and Decomposition of Supersaturated Solid Solution during High Pressure Torsion of Al-Zn and Al-Mg Alloys Acta Mater. 52 4469-4478
  • [2] Baretzky B(2006)Softening of Nanostructured Al-Zn and Al-Mg Alloys After Severe Plastic Deformation Acta Mater. 54 3933-3939
  • [3] Mazilkin AA(2008)Thermal Evolution and Grain Boundary Phase Transformations in Severely Deformed Nanograined Al-Zn Alloys Acta Mater. 56 6123-6131
  • [4] Phillipp F(2015)A Microstructure-Based Model for Describing the Material Properties of Al-Zn Alloys during High Pressure Torsion Int. J. Plast. 68 150-163
  • [5] Kogtenkova OA(2015)Ultrafine Grained Structures Resulting from SPD-Induced Phase Transformation in Al-Zn Alloys Adv. Mater. Eng. 17 1821-1827
  • [6] Volkov MN(2022)Room-Temperature-Deformation-Induced Chemical Short-Range Ordering in a Supersaturated Ultrafine-Grained Al-Zn Alloy Scr. Mater. 210 539-546
  • [7] Valiev RZ(2021)Investigation of Mechanical Properties and Corrosion Resistance of Fine-Grained Aluminum Alloys Al-Zn with Reduced Zinc Content J. Alloys Compd. 891 436-441
  • [8] Mazilkin AA(2015)Dynamic Precipitation of Al-Zn Alloy during Rolling and Accumulative Roll Bonding Philos. Mag. Lett. 95 17-27
  • [9] Straumal BB(2016)Evaluation of Microstructure and Mechanical Properties of Al-Zn Alloy during Rolling Mater. Sci. Eng. A 654 4718-4724
  • [10] Rabkin E(2014)Softening by Severe Plastic Deformation and Hardening by Annealing of Aluminum-Zinc Alloy: Significance of Elemental and Spinodal Decompositions Mater. Sci. Eng. A 610 6740-121
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