低温における軟鋼切欠き材の破壊機構について

概要

論文の詳細を見る
The brittle fractures of notched specimen of steels were investigated by using electron microscope, scanning microscope and X-ray micro-beam technique. The macroscopic behavior of brittle fracture was discussed in connection with the changes in micro structure of steels. The observation revealed the fact that the brittle fracture of steels occurred through the three processes, that is, the initiation of ductile cracks at the tip of notch, the propagation of ductile crack and the transition from ductile crack to cleavage crack. These three processes were closely related to the micro structural changes of steels. The concept of high strained zone was introduced to clarify the mechanisms of brittle fracture in steels. The concept is sufficient to explain the mechanism of several types of fracture.
社団法人日本材料学会の論文
1974-01-15