Abstract

The mechanical properties and the structure of steel drill pipes, which were decommissioned because of through pitting corrosion and rupture, are investigated. The formation of the acicular structure of secondary sorbite, which ensures the high strength properties of steel drill pipes, is found to cause their accelerated stress corrosion cracking.

中文翻译：

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高强度钻杆故障的原因

摘要

研究了由于点蚀和破裂而退役的钢钻杆的力学性能和结构。二次山梨醇的针状结构的形成，确保了钢管的高强度性能，被发现会导致其加速应力腐蚀开裂。