Etsujiro Yajima and Koichi Furusawa
The directionality of hot-rolled Ni-Cr steel was investigated with a dilatometer and the following results were obtained: (1) By heating and cooling dimensional changes occurred and the changes depend on the rolling direction. (2) The same phenomena occurred by tempering. (3) Discussion of these phenomena were done with schematic figures. (4) By differential dilatometric method quantitative measurement of the directionality could be done. (5) By this method the elimination of directionality was studied.
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