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首页> 外文期刊>ISIJ international >Microstructural Features of Cold-Rolled Carbon Steel Evaluated by X-ray Diffraction Line Profile Analysis and Their Correlation with Mechanical Properties
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Microstructural Features of Cold-Rolled Carbon Steel Evaluated by X-ray Diffraction Line Profile Analysis and Their Correlation with Mechanical Properties

机译：X射线衍射线轮廓分析评价冷轧碳素钢的显微组织特征及其与力学性能的关系

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摘要

Line profile analyses of cold-rolled carbon steels were conducted to evaluate microstructural features such as dislocation density, crystallite size, and M values. After the samples were subjected to 40% cold-rolling, dislocation density increased from 7 × 10~(13) m~(-2) to 2 × 10~(15) m~(-2) and crystallite size decreased from 155 nm to 35 nm. The component ratio of screw and edge dislocations was approximately 1:1, as determined from the evaluation of the q values. The M value that indicated interaction of dislocations substantially decreased during the initial stage of cold-rolling, which means interaction of dislocations becomes strong. Proof stress, hardness, and tensile strength were increased by the cold-rolling process. Furthermore, the ratios between proof stress and hardness were initially 2 and increased to approximately 3. The correlation between the microstructures and the mechanical properties was demonstrated according to the Bailey-Hirsch relationship between flow shear stress and dislocation density. Variations in the proof stress and hardness as a function of the square root of dislocation density indicated that the work-hardening of the material is affected by not only the total amount of dislocations but also other factors, such as crystallite size and arrangement of dislocations.
机译：进行了冷轧碳钢的线轮廓分析，以评估微观结构特征，例如位错密度，微晶尺寸和M值。样品进行40％冷轧后，位错密度从7×10〜（13）m〜（-2）增加到2×10〜（15）m〜（-2），微晶尺寸从155 nm减小至35纳米。螺丝和边缘位错的组成比约为1：1，这是根据q值的评估确定的。表示位错相互作用的M值在冷轧初期显着降低，这意味着位错相互作用变强。耐应力，硬度和抗拉强度通过冷轧工艺得以提高。此外，屈服应力与硬度之间的比率最初为2，并增加到大约3。根据流动剪切应力与位错密度之间的Bailey-Hirsch关系，证明了微观结构与力学性能之间的相关性。屈服强度和硬度随位错密度平方根的变化表明，材料的加工硬化不仅受位错总量的影响，还受到其他因素的影响，例如晶粒尺寸和位错的排列。

著录项

  • 来源
    《ISIJ international》 |2014年第1期|206-211|共6页
  • 作者

    Masayoshi KUMAGAI; Muneyuki IMAFUKU; Shin-ichi OHYA;

  • 作者单位

    Tokyo City University, Mechanical Systems Engineering, 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557 Japan;

    Tokyo City University, Mechanical Systems Engineering, 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557 Japan;

    Tokyo City University, Mechanical Systems Engineering, 1-28-1, Tamazutsumi, Setagaya-ku, Tokyo, 158-8557 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dislocation; X-ray diffraction; cold-rolling; work-hardening; mechanical property;

    机译：错位;X射线衍射;冷轧工作硬化;机械性能;

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