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首页> 外文期刊>Materials Characterization >Quantitative carbide analysis using the Rietveld method for 2.25Cr-1Mo-0.25V steel
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Quantitative carbide analysis using the Rietveld method for 2.25Cr-1Mo-0.25V steel

机译：使用Rietveld方法对2.25Cr-1Mo-0.25V钢进行碳化物定量分析

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摘要

It is usually difficult to quantitatively determine the mass fraction of each type of precipitates in steels using transmission electron microscopy and traditional X-ray powder diffraction analysis methods. In this paper the Rietveld full-pattem fitting algorithm was employed to calculate the relative mass fractions of the precipitates in 2.25Cr-lMo-0.25V steel. The results suggest that the fractions of MC, M_7C_3 and M_(23)C_5 carbides were evaluated precisely and relatively quickly. In addition, it was found that the fine MC phase dissolved into the matrix with prolonged tempering.
机译：通常，使用透射电子显微镜和传统的X射线粉末衍射分析方法很难定量确定钢中每种类型的析出物的质量分数。本文采用Rietveld全模式拟合算法来计算2.25Cr-1Mo-0.25V钢中析出物的相对质量分数。结果表明，精确，相对快速地评估了MC，M_7C_3和M_（23）C_5碳化物的分数。另外，发现细的MC相随着长时间的回火而溶解到基质中。

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