白點状缺陷に關する研究 (VIII) : 白點状缺陷の發生と外部應力との關係について

概要

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In this experiments the action of outer stress for the flake-like defects formation is studied. (1) The effect of outer stress stressed before the pickling on the number or shape of defects is not so clear. (2) The effect of outir stress stressed after the pickling and just before the breaking is not also clear. But from this experiment it is confirmed that the effect of small inner notch is important for the flake-formation. (3) The quenched and tempered test pieces of various steel in pickled under the outer stress. It is confirmed that the flake-like defects is appeared during the pickling under the stress larger than the definite value. (4) From this results, it is supposed that the existence of outer stress larger than the definite value would be essential for the flake formation with the supersaturated hydrogen in steel.
社団法人日本鉄鋼協会の論文
1950-07-25