冷延鋼板の調質圧延の調質率と鋼板表面残留応力の関係(続報)

概要

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In the previous paper we analyzed the relations between the skin-pass reduction rations and the surface residual stresses at various skin-pass ratios from 0.3% to 2.5% using different rolling mills on steel sheets of various kinds and thickness. We have found that they showed the same inclination. In the present paper we have analyzed the interrelations between the skin-pass reduction ratios and the surface residual stresses and some or their main mechanical properties (especially the yield point elongations) at various skin-pass reduction ratios from 0.5% to 2.5% on the specimens made with the same rolling mill of steel sheets of the same kind and thickness. By the results of our experiments concerning the relation between the skin-pass reduction ratios and the surface residual stresses we have been confirmed of the same inclination as before. We have found also that there are considerable deviations in the relation curves of there specimens. But clear relation is recognized between the surface residual stresses and the yield point elongations of the cold-rolled steel sheets ; i,e., if the sign of the surface residual stresses of the cold rolled steel sheets is positive, their yield point elongation is less than 1% and there is but little apparent stretcher strain.
社団法人日本材料学会の論文
1965-12-15