利用bragg边缘透射成像、TOF中子衍射和EBSD对弯曲钢板晶粒尺寸和位错密度的比较研究

Physics Procedia Pub Date : 2017-01-01 DOI:10.1016/j.phpro.2017.06.004

K. Oikawa , Y.H. Su , Y. Tomota , T. Kawasaki , T. Shinohara , T. Kai , K. Hiroi , S.Y. Zhang , J.D. Parker , H. Sato , Y. Kiyanagi

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引用次数: 5

摘要

对铁素体钢和双相不锈钢塑性弯曲板的飞行时间中子衍射数据进行了线展宽分析。一个Rietveld分析程序，Z-Rietveld ver。采用1.0拟合各向异性加宽图，其中洛伦兹半最大全宽(FWHM)和高斯半最大宽分别涉及晶体尺寸和位错密度的信息。将所得结果与Bragg-edge透射谱分析和电子背散射衍射(EBSD)观测结果进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Comparative Study of the Crystallite Size and the Dislocation Density of Bent Steel Plates using Bragg-edge Transmission Imaging, TOF Neutron Diffraction and EBSD

Line broadening analysis was performed on the time-of-flight neutron diffraction data for the plastically bent plates of a ferritic steel and a duplex stainless steel. A Rietveld analysis program, Z-Rietveld ver. 1.0 was used to fit the anisotropically broadened patterns where the increase in Lorentzian full width at half maximum (FWHM) and the Gaussian FWHM involves information of the crystallite size and the dislocation density, respectively. The derived results were compared with those obtained by using Bragg-edge transmission spectrum analysis and electron backscatter diffraction (EBSD) observations.

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