Relation between KIc and microscopic strength for low alloy steels
作者： J.M. Alkin , A.S. Tetelman
DOI: 10.1016/0013-7944(71)90006-3
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摘要: Abstract A simple model has been developed to determine KIC in terms of the microscopic cleavage strength σ f ∗ and tensile yield σY for low temperature fracture A302B A533 reactor grade quenched tempered steels. The applies at sufliciently temperatures or irradiated steels where ≦ 3.4 Y . It was determined that is independent below −150°F then increases with increasing temperature. At this time, it appears σ∗ irradiation. above which , unstable initiates when a critical plastic strain ϵf achieved near crack tip. local also
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