X-Ray Stress Measurement of Two Phase Stainless Steel by Monochromator Method

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  • モノクロメーターによる２相ステンレス鋼のＸ線応力測定
  • モノクロメータ ニヨル 2ソウ ステンレス コウ ノ Xセン オウリョク ソク

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Abstract

The X-ray stress measurement of austenitic phase was carried out on two-phase stainless steels, such as ferrite austenite stainless steel and strain-induced metastable austenitic stainless steel, by using the monochromator method. This method was performed by setting a graphite plain crystal between the receiving soller slits and the detector. The results obtained are as follows.<br>(1) X-ray diffraction from Fe(211) by CrKα can be completely eliminated, when the graphite monochromater is set at CrKβ and γFe(311) is analyzed.<br>(2) By using the monochromator method, the X-ray intensity decreases to 1/4∼1/7 compared with the case without it, but the S/N ratio improves from 0.1 to 4.<br>(3) The monochromator method is particularly useful for the X-ray stress measurement of SUS 304 rolled materials and welded materials which shows wider half value breadth than 2° or texture.

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