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Effects of Sc addition and rolling on the microstructure and mechanical properties of Al-35Zn alloys

机译:添加Sc和轧制对Al-35Zn合金组织和力学性能的影响

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摘要

Sc addition and rolling were performed to optimize the mechanical properties of Al alloys with high Zn concentrations. The addition of 0.5 Sc reduced the grain size of the Al-35Zn alloys during solidification, heat treatment, and rolling. Nanosized, rod-shaped Zn particles dynamically precipitated from the Al lattice during hot rolling and consequently coarsened during further cold rolling. Following 50% hot rolling and 80% cold rolling, Al-35Zn-0.5Sc alloy demonstrated the highest strength, i.e., an ultimate tensile strength (UTS) of 482 MPa. Moreover, following 90% hot rolling, Al-35Zn-0.5Sc alloy demonstrated balanced mechanical properties including high strength and reasonable ductility (UTS and tensile elongation of 430 MPa and 10%, respectively). This work provided an effective strategy to fabricate Al alloys with high Zn concentrations and excellent mechanical properties.
机译:进行添加和轧制以优化具有高Zn浓度的铝合金的机械性能。添加0.5 Sc可以减小凝固,热处理和轧制过程中Al-35Zn合金的晶粒尺寸。纳米棒状的Zn颗粒在热轧过程中从Al晶格动态沉淀出来,因此在进一步冷轧过程中会粗化。经过50%的热轧和80%的冷轧,Al-35Zn-0.5Sc合金表现出最高的强度,即482 MPa的极限抗拉强度(UTS)。此外,经过90%的热轧,Al-35Zn-0.5Sc合金表现出平衡的机械性能,包括高强度和合理的延展性(UTS和拉伸伸长率分别为430 MPa和10%)。这项工作为制造具有高Zn浓度和出色机械性能的铝合金提供了有效的策略。

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  • 来源
    《Materials Science and Engineering》 |2017年第4期|45-53|共9页
  • 作者单位

    Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;

    State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microstructure; Mechanical properties; Al alloy; Rolling;

    机译:微观结构机械性能铝合金滚动;

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