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Microstructure evolution of titanium after tensile test

机译：拉伸试验后钛的微观组织演变

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摘要

The qualitative and quantitative behavior of titanium T40 during tensile loading with a special emphasis on the presence of deformation twins in the observed microstructures is described. The samples for tensile tests were cut out from the rolled titanium sheet along the rolling and transverse directions. Several microstructure maps were determined using Electron Backscatter Diffraction technique (EBSD). These data were used to obtain crystallographic textures, misorientation distributions, grain size, twin boundary length, grain orientation spread, low and high angle boundary fractions and Schmid and Taylor factors. The deformation mechanisms and microstructure characteristics are different in the samples stretched along rolling and transverse directions. A strong appearance of tensile twins was observed in the samples deformed along transverse direction. On the other hand, more frequent subgrain formation and higher orientation spread was observed in the sample deformed along rolling direction, which caused"orientation blurring' leading to an increase of grain size with deformation, as determined from OIM analysis.
机译：描述了钛T40在拉伸载荷过程中的定性和定量行为，特别着重于观察到的微观结构中变形孪晶的存在。从轧制的钛板沿轧制方向和横向切出拉伸试验样品。使用电子背散射衍射技术（EBSD）确定了几个微观结构图。这些数据用于获得晶体织构，取向差分布，晶粒尺寸，孪晶边界长度，晶粒取向扩展，低和高角度边界分数以及Schmid和Taylor因子。沿滚动和横向拉伸的样品的变形机理和微观结构特征不同。在沿横向变形的样品中观察到强烈的拉伸双胞胎外观。另一方面，根据OIM分析确定，沿轧制方向变形的样品中观察到更频繁的亚晶粒形成和较高的取向扩展，这导致“取向模糊”，导致晶粒尺寸随变形增加。

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  • 来源
    《Materials Science and Engineering》 |2016年第22期|1-11|共11页
  • 作者

    S. Wronski; K. Wierzbanowski; M. Jedrychowski; J Tarasiuk; M. Wronski; A. Baczmanski; B. Bacroix;

  • 作者单位

    AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland;

    AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland;

    AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland;

    AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland;

    AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland;

    AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, al. Mickiewicza 30, 30-059 Krakow, Poland;

    LSPM-CNRS, Universite Paris ⅩⅢ, 99, Avenue J.B. Clement, 93 430 Villetaneuse, France;

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

    EBSD; Titanium alloys; Mechanical characterization; Microstructure; Texture; Grain boundaries;

    机译：EBSD;钛合金;机械特性微观结构质地;晶界;

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