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首页> 外文会议>Conference on Phase Transformations in Inorganic Materials >Restitution of the shapes and orientations of the prior austenitic grains from inherited alpha' orientation maps in steels
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Restitution of the shapes and orientations of the prior austenitic grains from inherited alpha' orientation maps in steels

机译：从钢材中遗传α方向图的先前奥氏体谷物的形状和方向恢复

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We propose to reconstruct the γ orientation maps from the α maps inherited by the bainitic or martensitic γ→α phase transformation. Our approach comprises two main steps (1) identification of reliable fractions of parent grains - eachγ fraction is determined from neighbouring variants related to a unique γ orientation with a low tolerance angle; (2) expansion of these fractions by collecting adjacent variants being in orientation relation (OR) with the calculated γ orientation - using a higher tolerance around the strict OR. Moreover, this fully automated γ map reconstruction is further improved by an additional semi-automated analysis of α/γ maps. This reconstruction procedure was applied to the α microtexture of bainitic steels. The reliability of the calculations was checked by comparing eachγ grain orientation and their corresponding α variants. The results show that even with a large spread around OR, the shape and orientation of most of the γ grains are accurately calculated.
机译：我们建议重建来自贝氏体或马氏体γ→α相变α相变α的α地图的γ取向图。我们的方法包括两个主要步骤（1）鉴定母粒的可靠分数 - 从与具有低容差角的唯一γ取向有关的相邻变体确定每个γ分数; （2）通过采用所计算的γ取向来收集相邻变体的相邻变型来扩展这些级分 - 使用围绕严格的或。此外，通过α/γ地图的额外半自动分析进一步提高了这种全自动γ地图重建。该重建过程应用于贝氏体钢的α微织物。通过比较每个晶粒取向及其对应的α变体来检查计算的可靠性。结果表明，即使在大范围内或，大部分γ晶粒的形状和取向也被精确地计算。

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