二相ステンレス綱の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 elastic constants of two-phase stainless steel and four kinds of 18-8 stainless steel tensile pre-strained at low temperatures were measured by the ψ_0 oscillation method with CrKβγ (311) diffraction and CrKα α (211) diffraction. and the accuracy of the measurements was examined. The results obtained are summarized as follows. (1) When CrKγ (311) diffraction p,lane was used, the value of constant K_x was not much influenced by the amount of α-phase. The K-value (K_x=37. 26 kg/mm^2/deg) of the austenitic stain-less steel reported in the joint research by the Committee on the Mechanical Behaviour of Materials was considered suitable for X-ray stress measurement of two-phase stainless steel such as ferrite-austenitic stainless steel and strain-induced metastable austenitic stainless steel. (2) On the CrKα α (211) diffraction plane, it seemed that the value of constant K_x for the two-phase stainless steel differed from the K-value for ferritic steel (K_x= -32. 44 kg/mm^2/deg). (3) In the X-ray stress measurement of the two-phase stainless steel with the CrKβ γ (311) diffraction intensity curve influenced by CrKα α (211) diffraction, the measured stress value increased up to 4 kg/mm^2 by the influence of α (211) profile under the present experimental conditions.
社団法人日本材料学会の論文
1981-03-15