複合揺動法による18-8ステンレス粗粒鋼のX線応力測定

抄録

With the CrKβγ(311) diffraction plane, the X-ray stress measurements on coarse grained 18Cr-8Ni austenitic stainless steel was carried out by the complex oscillation technique using the ψ₀ oscillation and specimen oscillation at the same time, and the accuracy of the measurements and the X-ray elastic constant were examined.
The results obtained are summarized as follows.
(1) Using the complex oscillation technique, the stress of 18-8 stainless steel having the average grain size 155μm can be measured with the error less than ±1kg/mm², if the limit of confidence is set at 95per cent.
(2) The X-ray elastic constant for the material having the average grain size 93μm is almost the same as those for the fine grained specimens. But the value for the one with grain size 155μm is different from these values.