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Enhanced mechanical properties of ARB-processed aluminum alloy 6061 sheets by subsequent asymmetric cryorolling and ageing

机译:随后的不对称冷轧和时效处理增强了ARB处理的6061铝合金板的机械性能

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摘要

Grain size and precipitations affect the strength and ductility of ultrafine-grained materials. In this study, aluminum alloy 6061 sheets were fabricated using the accumulative roll bonding (ARB) technique. The ARB-processed sheets were subsequently subjected to cryorolling and asymmetric cryorolling. The sheets were further aged at 100 ℃ for 48 h. Mechanical tests show that a combination of asymmetric cryorolling and ageing results in significant improvement in both the ductility and the strength of the ARB-processed sheets. The microstructures of the sheets at different stages of the process were also analyzed using optical microscopy, scanning electron microscopy, transmission electron microscopy and X-ray diffraction in order to correlate the mechanical properties with the microstructure.
机译:晶粒尺寸和沉淀影响超细颗粒材料的强度和延展性。在这项研究中,铝合金6061片是使用累积辊压结合(ARB)技术制造的。随后将经过ARB处理的板材进行冷轧和不对称冷轧。将该板在100℃下进一步老化48小时。力学测试表明,不对称的冷轧和时效相结合,可以显着改善ARB加工板材的延展性和强度。还使用光学显微镜,扫描电子显微镜,透射电子显微镜和X射线衍射分析了该工艺在不同阶段的片材的微观结构,以使机械性能与微观结构相关。

著录项

  • 来源
    《Materials Science and Engineering》 |2016年第30期|256-261|共6页
  • 作者单位

    State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China,School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2500, Australia;

    School of Mechanical, Materials & Mechatronics Engineering, University of Wollongong, NSW 2500, Australia;

    Electron Microscope Unit, University of New South Wales, Sydney, NSW 2052, Australia;

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

    Aluminum alloy 6061 sheet; Accumulative roll bonding; Asymmetric cryorolling; Ageing; Mechanical properties;

    机译:铝合金6061薄板;累积辊压粘合;不对称冷冻老化;机械性能;

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