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首页> 外文期刊>ISIJ international >SAXS and TEM Quantitative Analysis of Plate-like Precipitates in Ti-added Low-carbon Steel
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SAXS and TEM Quantitative Analysis of Plate-like Precipitates in Ti-added Low-carbon Steel

机译：在加入的低碳钢中的板状沉淀物的露酢瓣和TEM定量分析

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摘要

Transmission electron microscopy (TEM) is a powerful tool for analyzing fine precipitates because it can measure the size of the precipitates directly. In contrast, small angle X-ray scattering (SAXS) can observe much larger volumes and yield statistical quantitative results. However, the consistency between results obtained by SAXS and TEM has not been well investigated, especially in the case of precipitates having anisotropic shapes. In this study, the quantitative capability of SAXS was investigated by comparing SAXS and TEM results for TiC precipitates contained in high-strength steel. Samples with various size distributions of TiC precipitates were prepared. The average size, number density and volume fraction of TiC were obtained by SAXS analysis of these samples using a sphere or a disk form factor. Regardless of the form factor, the average size and volume fraction were almost the same, whereas the number density differed by one order of magnitude. The average size of TiC precipitates measured by SAXS analysis was consistent with that obtained by TEM. Since it is considered that the difference in number density depending on the form factor is attributed to an error due to the overestimation of the size distribution width, the average number density was defined to correct for this. The average number density calculated from the results using both form factors agreed well and were reasonable. It was found that using a sphere form factor with good convergence is effective for obtaining average information concerning the precipitates.
机译：透射电子显微镜（TEM）是一种用于分析细沉淀物的强大工具，因为它可以直接测量沉淀物的尺寸。相反，小角度X射线散射（萨克斯）可以观察到更大的体积并产生统计定量结果。然而，通过SAXS和TEM获得的结果之间的一致性尚未得到很好的研究，特别是在具有各向异性形状的沉淀物的情况下。在这项研究中，通过比较了高强度钢中包含的Tic沉淀物的SAX和TEM结果来研究SAXS的定量能力。制备具有各种尺寸分布的TiC沉淀物的样品。通过使用球体或盘形状因子撒布分析这些样品的平均大小，数量密度和体积分数。无论外形因素如何，平均尺寸和体积分数几乎相同，而数量密度差异差。通过SAXS分析测量的TiC沉淀物的平均尺寸与通过TEM获得的TiC。由于认为根据形状因子的数量密度的差异归因于由于尺寸分布宽度的高估而归因于误差，因此定义了平均数密度以校正此。使用两种形状因素的结果计算的平均数量密度良好，并且是合理的。发现使用具有良好收敛性的球形形状因子对于获得沉淀物的平均信息是有效的。

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  • 来源
    《ISIJ international》 |2020年第10期|2246-2254|共9页
  • 作者

    Takaaki TANAKA; Yuki TOJI; Pawel KOZIKOWSKI; Masato OHNUMA; Miho NAGANO;

  • 作者单位

    Steel Research Laboratory JFE Steel Corporation 1 Kawasaki-cho Chuo-ku Chiba 260-0835 Japan;

    Steel Research Laboratory JFE Steel Corporation 1 Kawasaki-cho Chuo-ku Chiba 260-0835 Japan;

    Graduate School of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan;

    Graduate School of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 Japan;

    Graduate School of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo Hokkaido 060-8628 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

    small-angle X-ray scattering; quantitative analysis; titanium carbide; plate-like precipitate; transmission electron microscopy;

    机译：小角度X射线散射;定量分析;碳化钛;板状沉淀物;透射电子显微镜;

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