極低炭素鋼の引張遷移挙動と変形との関係に及ぼす前ひずみの影響について

概要

論文の詳細を見る
The effect of prestrain at room temperature on the relationship between non-ductile transition temperature and tensile speed has been examined on a low carbon steel. The results obtained are summarized as follows. (1) The transition temperature of the prestrained specimen rises with increasing prestrain at room temperature. (2) The relation between the transition temperature T_B and the tensile speed V is represented by the following equation, 1/T_B=a-b log V where a is dependent on the amount of prestrain and b is a constant. (3) There are little deformation twins in the prestrained specimen tested in the vicinity of its non-ductile transition temperature. The micro-cracks remain slightly in the prestrained specimen tested at a low tensile speed but they disappear at a high tensile speed. (4) A number of results seem to support the dislocation piled-up mechanism of the cleavage fracture.
社団法人日本材料学会の論文
1978-04-15