Hydrogen damage of steels: A case study and hydrogen embrittlement model

被引:296
作者
Djukic, M. B. [1 ]
Zeravcic, V. Sijacki [1 ]
Bakic, G. M. [1 ]
Sedmak, A. [1 ]
Rajicic, B. [1 ]
机构
[1] Univ Belgrade, Fac Mech Engn, Belgrade 11120, Serbia
关键词
Low carbon steel; Hydrogen-assisted cracking; Hydrogen embrittlement; Fractography; Impact strength; MECHANICAL-PROPERTIES; STAINLESS-STEELS; FRACTURE; DEFORMATION; METALS; DEGRADATION; CRACKING; DEFECTS; STRESS; PIPES;
D O I
10.1016/j.engfailanal.2015.05.017
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Many efforts have been made to understand the effects of hydrogen on steels, resulting in an abundance of theoretical models and papers. However, a fully developed and practically applicable predictive physical model still does not exist industrially for predicting and preventing hydrogen damage. In practice, it is observed that different types of damages to industrial boiler components have been associated with the presence and localization of hydrogen in metals. In this paper, a damaged boiler tube made of grade 20 - St. 20 (or 20G, equivalent to AISI 1020) was investigated. The experimental research was conducted in two distinctive phases: failure analysis of the boiler evaporator tube sample and subsequent postmortem analysis of the viable hydrogen embrittlement mechanisms (HE) in St. 20 steel. Numerous tested samples were cut out from the boiler tubes of fossil fuel power plant, damaged due to high temperature hydrogen attack (HTHA) during service, as a result of the development of hydrogen-induced corrosion process. Samples were prepared for the chemical composition analysis, tube wall thickness measurement, tensile testing, hardness measurement, impact strength testing (on instrumented Charpy machine), analysis of the chemical composition of corrosion products - deposit and the microstructural characterization by optical and scanning electron microscopy SEM/EDX. The HTHA damage mechanism is a primary cause of boiler tube fracture. Based on the multi-scale special model, applied in subsequent postmortem investigations, the results indicate a simultaneous action of the hydrogen-enhanced decohesion (HEDE) and hydrogen-enhanced localized plasticity (HELP) mechanisms of HE, depending on the local concentration of hydrogen in investigated steel. The model is based on the correlation of mechanical properties to the SEM fractography analysis of fracture surfaces. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:485 / 498
页数:14
相关论文
共 43 条
[1]   Structural integrity evaluation of X52 gas pipes subjected to external corrosion defects using the SINTAP procedure [J].
Adib-Ramezani, H. ;
Jeong, J. ;
Pluvinage, G. .
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 2006, 83 (06) :420-432
[2]  
[Anonymous], 2010, SAND2010-4633
[3]  
Bahr DF, 2009, EFFECTS OF HYDROGEN ON MATERIALS, P179
[4]   Recent developments in the study of hydrogen embrittlement: Hydrogen effect on dislocation nucleation [J].
Barnoush, Afrooz ;
Vehoff, Horst .
ACTA MATERIALIA, 2010, 58 (16) :5274-5285
[5]   Hydrogen effects on deformation and fracture: Science and sociology [J].
Birnbaum, HK .
MRS BULLETIN, 2003, 28 (07) :479-485
[6]   Effect of hydrogen on the mechanical properties of stainless steels [J].
Borchers, Christine ;
Michler, Thorsten ;
Pundt, Astrid .
ADVANCED ENGINEERING MATERIALS, 2008, 10 (1-2) :11-23
[7]   Sensitivity of pipelines with steel API X52 to hydrogen embrittlement [J].
Capelle, J. ;
Gilgert, J. ;
Dmytrakh, I. ;
Pluvinage, G. .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (24) :7630-7641
[8]   Hydrogen in metals [J].
Carter, TJ ;
Cornish, LA .
ENGINEERING FAILURE ANALYSIS, 2001, 8 (02) :113-121
[9]   Recent Advances in the Study of Structural Materials Compatibility with Hydrogen [J].
Dadfarnia, M. ;
Novak, P. ;
Ahn, D. C. ;
Liu, J. B. ;
Sofronis, P. ;
Johnson, D. D. ;
Robertson, I. M. .
ADVANCED MATERIALS, 2010, 22 (10) :1128-1135
[10]   Hydrogen embrittlement in power plant steels [J].
Dayal, RK ;
Parvathavarthini, N .
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES, 2003, 28 (3-4) :431-451