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Dynamic strain ageing in C-Mn steels and associated welds. II. Effect on fracture toughness behaviour

机译:C-Mn钢和相关焊缝中的动态应变时效。二。对断裂韧性行为的影响

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摘要

C-Mn steels and associated welds are susceptive to Dynamic Strain Ageing (DSA). In this case, fracture toughness shows a Minimum when the temperature increases from 20 to 300 deg. C. After A literature review, the results of J-R tearing resistance tests, Characterized by crack initiation resistance J_0,2 and tearing moulus DJ/da relative to a base metal (A48 French standard steel) and Manual Metal Arc deposited metals are presented and discussed. The decrease of both crack initiation resistance J_0,2 and tearning Modulus DJ/da is related to the DSA sensitivity of the material.
机译:C-Mn钢及其相关焊缝易受动态应变时效(DSA)的影响。在这种情况下,当温度从20度增加到300度时,断裂韧性显示为最小值。 C.经过文献审查后,提出并讨论了以抗开裂性J_0,2和相对于贱金属(A48法国标准钢)和手动金属电弧沉积金属的抗撕裂性DJ / da为特征的JR抗撕裂性测试的结果。 。裂纹起始阻力J_0,2和撕裂模量DJ / da的降低都与材料的DSA敏感性有关。

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