Abstract

The phenomenon of spall fracture of high-strength steel specimens with the formation of two fracture surfaces during standard tensile tests is discussed. The fracture along two planes is shown to occur not simultaneously: first, fracture induced by a tensile load is observed, and then a second fracture plane forms, presumably, according to the spallation mechanism. The sequence proposed for the two fractures is confirmed by the results of fractographic analysis. The spallation during tension of standard specimens is found to differ from the classical spallation under an intense external action in the scheme of deformation wave formation and the source of spallation energy.

中文翻译：

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拉伸过程中剥落断裂现象

摘要

讨论了在标准拉伸试验中高强度钢试样剥落断裂现象，形成两个断裂面。如图所示，沿两个平面的断裂不是同时发生的：首先，观察到由拉伸载荷引起的断裂，然后据推测是根据散裂机理形成了第二个断裂平面。分形分析的结果证实了对这两种裂缝提出的顺序。在变形波形成和散裂能量来源的方案中，在强烈的外力作用下，标准试样在拉伸过程中的散裂被发现不同于传统的散裂。