モノクロメータによる2相ステンレス鋼のX線応力測定 (<小特集>X線材料強度小特集)

概要

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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. (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. (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. (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.
1978-03-15