Hydrogen accumulation and hydrogen-induced cracking of API C90 tubular steel

被引：49

作者：

Yu, GH ^{[1
]}

Cheng, YH ^{[1
]}

Chen, L ^{[1
]}

Qiao, LJ ^{[1
]}

Wang, YB ^{[1
]}

Chu, WY ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Dept Mat Phys, Beijing 100083, Peoples R China

来源：

CORROSION | 1997年 / 53卷 / 10期

关键词：

API C90 tubular steel; blistering; grain boundary; hydrogen-induced cracking; inclusions; SM90; steel; SM95; stress; stress intensity; sulfide stress cracking; tubular steel;

D O I：

10.5006/1.3290260

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study was undertaken of hydrogen accumulation on grain boundaries, at inclusions, and near a kneaded notch tip: the susceptibility for blistering; and hydrogen-induced cracking (HIC) of tubular steels (API C90). Results showed the accumulation coefficients of hydrogen on the grain boundaries, various Inclusions, and near the loaded notch tip were 2.2 to 11, 8 to 20, and 2.5 to 4.5, respectively. The threshold hydrogen concentration for blistering and the threshold stress in three tubular steels were 1.8 ppm and 397 MPa for SM90 steel, 4.3 ppm and 497 MPa for SM95 steel and 8.3 ppm and 528 MPa for the C90 steel. The threshold stress intensity for HIC (K-IH) in the C90 steel was K-IH (MPa root m) = 46 -12.5 lnC(O) (ppm), where C-O is the concentration of diffusible hydrogen.

引用

页码：762 / 769

页数：8

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