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Enhancing stretch formability of rolled Mg sheets by pre-inducing contraction twins and recrystallization annealing

机译:通过预诱导收缩孪晶和重结晶退火来增强镁合金板材的拉伸成形性

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摘要

It is commonly accepted that weakening or tilting basal texture is an effective way to improve stretch formability of Mg alloy sheets. In this study, contraction twins (including double twins) were introduced in rolled AZ31 sheet by pre-cold rolling to a thickness reduction of 10%. It was noted that the stretch formability of rolled AZ31 sheet can be greatly enhanced by pre-cold rolling and subsequent recrystallization annealing. The Erichsen value of rolled AZ31 sheet was increased up to 66% by pre-cold rolling and annealing at 400 ℃. The improvement in stretch formability was mainly attributed to the formation and growth of recrystallization grains with weak texture nucleated at contraction twins during annealing.
机译:公认的是,减弱或倾斜基础组织是提高Mg合金板拉伸成形性的有效方法。在这项研究中,通过预冷轧将收缩孪晶(包括双孪晶)引入到轧制的AZ31板材中,使厚度减少10%。注意到,通过预冷轧和随后的再结晶退火可以大大提高轧制的AZ31板的拉伸成形性。通过预冷轧和在400℃退火,轧制AZ31板材的Erichsen值提高了66%。拉伸成形性的改善主要归因于退火过程中在收缩孪晶处具有弱织构的重结晶晶粒的形成和生长。

著录项

  • 来源
    《Materials Science and Engineering》 |2015年第11期|369-373|共5页
  • 作者单位

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China ,Faculty of Materials and Energy, Southwest University, Chongqing, 400715, China;

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China ,Sha Zheng Jie 174#, Sha Ping Ba District, Chongqing, China;

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;

    Faculty of Materials and Energy, Southwest University, Chongqing, 400715, China;

    College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;

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

    Mg alloy; Texture; Twinning; Recrystallization; Stretch formability;

    机译:镁合金质地;孪生;重结晶;拉伸成型性;

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