OS1205 白色X線回折プロファイル半価幅と塑性ひずみとの関係(X線,放射光,中性子による材料・材料強度評価,オーガナイズドセッション)

概要

論文の詳細を見る
Full Width at Half Maximum (FWHM) of diffracted X-ray profile to correlate with the occurrence of plastic strain was investigated using high energy white X-rays obtained from BL14B1 beam line at SPring-8 in Japan. A low-alloy and high-tensile steel was used as a specimen prepared in the tensile bar with a parallel part of 5mm diameter. Plastic strain introduced to the specimen by a tensile loading. As a result, the correspondence between FWHM and a plastic strain had a dependence on a lattice plane. FWHM of αFe211 diffraction plane showed a strong correlation with the applied plastic strain. Furthermore, it became clear by the numerical simulation that the FWHM of diffracted X-ray profile measured near the crack tip was increased due to the steep change in the strain distribution.
一般社団法人日本機械学会の論文
2009-07-24