The effect of hydrogen concentration on fracture of pipeline steels in presence of a notch

被引：54
作者：
Capelle, J. [1 ,2 ]
Gilgert, J. [1 ,2 ]
Dmytrakh, I. [3 ]
Pluvinage, G. [1 ,2 ]
机构：
[1] Univ Paul Verlaine Metz, LaBPS, F-57045 Metz, France
[2] Ecole Natl Ingenieurs Metz, F-57045 Metz, France
[3] Natl Acad Sci Ukraine, Karpenko Physicomech Inst, UA-79601 Lvov, Ukraine
来源：
ENGINEERING FRACTURE MECHANICS | 2011年 / 78卷 / 02期
关键词：
Hydrogen charging of metal; Hydrogen concentration; Cathodic polarisation; Current density; Acoustic emission; Work of local fracture initiation; Critical hydrogen concentration; STRUCTURAL INTEGRITY; STRESS; ABSORPTION; CRACKING; X52;
D O I：
10.1016/j.engfracmech.2010.10.007
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The comparative assessment of local fracture initiation at notches in API grade pipeline steels: X52, X70 and X100 have been done for conditions of electrochemical hydrogenating. The factor of hydrogen concentration in metal was taken into account. The relationship between hydrogen concentration in metal and work for initiation of the local fracture emanating from the notch has been derived. The existence of some critical hydrogen concentration, which causes the significant loss of local fracture resistance of material, was also shown and discussed. (C) 2010 Elsevier Ltd. All rights reserved.
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页码：364 / 373
页数：10
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