構造用鋼 S25C, S45C, SM50 の静水引張応力状態下での破壊挙動および破壊挙動図

概要

論文の詳細を見る
The fracture behavior of some structural steels under the hydrostatic tensile stress state has been studied by means of the Bridgman-type specimens. The fracture behavior of these steels had strong dependence on the hydrostatic tensile stress state. It was shown that the higher the hydrostatic tension and the lower the testing temperature, the lower the fracture strain was. A transition from ductile to cleavage appeared on the specimens subjected to the larger hydrostatic tension. The ductile-brittle transition pressure (negative pressure) DBTP is suggested to exist from the analogy of ductile-brittle transition temperature DBTT. The three dimensional "Fracture Behavior Diagrams" in which hydrostatic tension is taken into consideration have been presented in order to discuss the fracture behavior of these steels in general.
社団法人日本鉄鋼協会の論文
1980-10-01