Study on Fracture Behavior and Toughening Mechanisms of Ultra-High-Strength Pipeline Steel
Ba Li,
Xiaoshun Zhou,
Shujun Jia
et al.
Abstract:In this paper, a series of low-temperature CVN (Charpy V-notch impact test) and DWTT (drop-weight tear test) experiments were carried out to deal with the intensifying contradiction of strength and toughness of ultra-high-strength pipeline steel. The fracture behavior and toughening mechanisms of ultra-high-strength pipeline steel were investigated using scanning electron microscopy, transmission electron microscopy and backscattered electron diffraction systems. The results show that DWTT fractures in ultra-h… Show more
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