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首页> 外文期刊>Materials Science and Engineering >By controlling recrystallization degree: A plain medium Mn steel overcoming Liiders deformation and low yield-to-tensile ratio simultaneously
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By controlling recrystallization degree: A plain medium Mn steel overcoming Liiders deformation and low yield-to-tensile ratio simultaneously

机译：通过控制重结晶度：普通介质Mn钢克服紫外变形和低产率与拉伸比的同时

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摘要

A technical process concept, i.e., controlling recrystallization degree, was proposed and performed in order to manufacture the medium Mn steels overcoming discontinuous yielding and low yield-to-tensile ratio. Based on this, a plain medium Mn steel with 8.9 wt % Mn content was used in view of retarding recrystallization due to relatively high Mn content. The mechanical properties of the studied steel were evaluated by uniaxial tensile test at room temperature, and the detailed characterization of microstructural evolution was performed by scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that the recrystallization process of the cold-rolled plates with 50% or 70% rolling reduction during ART annealing was effectively controlled, resulting in a desired mechanical behavior, i.e., high yield-to-tensile ratio, continuous yielding and outstanding combination of strength and ductility. This is because a certain proportion of deformed grains are retained due to incomplete recrystallization, which retains a higher density of mobile dislocation. This concept can be suggested to be quite suitable for the manufacturing of medium Mn steel using continuous annealing process, in which heating temperature and time can be controlled flexibly.
机译：提出并进行了技术过程概念，即控制重结晶度，以制造克服不连续屈服和低产率延伸比的培养基MN钢。基于此，使用具有8.9wt％Mn含量的普通介质Mn钢，考虑到由于相对高的Mn含量延迟再结晶。通过单轴拉伸试验在室温下评估所研究的钢的机械性能，通过扫描电子显微镜（SEM），电子反向散射衍射（EBSD），透射电子显微镜（TEM）和X-进行微观结构演化的详细表征。射线衍射（XRD）。结果表明，在艺术退火期间具有50％或70％轧制减小的冷轧板的再结晶过程得到了有效控制，导致所需的机械行为，即高屈服率，连续屈服和杰出的组合强度与延展性。这是因为由于不完全重结晶而保持一定比例的变形晶粒，其保留了更高密度的移动位错。可以建议使用连续退火工艺来建议这种概念非常适合于制造介质Mn钢，其中可以灵活地控制加热温度和时间。

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  • 来源
    《Materials Science and Engineering》 |2019年第5期|79-85|共7页
  • 作者

    Yan Shu; Li Tianle; Liang Taosha; Chen Jingqi; Zhao Yang; Liu Xianghua;

  • 作者单位

    Northeastern Univ Sch Mat Sci & Engn POB 105 11 Lane 3 Wenhua Rd Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ State Key Lab Roiling & Automat Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ Key Lab Anisotropy & Texture Mat Minist Educ Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ State Key Lab Roiling & Automat Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ Sch Mat Sci & Engn POB 105 11 Lane 3 Wenhua Rd Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ Sch Mat Sci & Engn POB 105 11 Lane 3 Wenhua Rd Shenyang 110819 Liaoning Peoples R China|Northeastern Univ Key Lab Anisotropy & Texture Mat Minist Educ Shenyang 110819 Liaoning Peoples R China;

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

    Medium Mn steel; Recrystallization; Dislocation density; Yield-to-tensile ratio; Continuous yielding; Luders strain;

    机译：中Mn钢;重结晶;位错密度;产率与拉伸率;连续屈服;铅菌株;

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