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Hydrogen-induced cracking behavior of twin boundary in gamma ' phase strengthened Fe-Ni based austenitic alloys
S. H. Chen; M. J. Zhao; L. J. Rong
2013
Source PublicationMaterials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN0921-5093
Volume561Pages:7-12
AbstractThe hydrogen-induced cracking behavior is investigated in two Fe-Ni based austenitic alloys with different amounts of gamma' phase. It is observed that intergranular cracking existed in both alloys, while hydrogen-induced twin boundary cracking only occurred in the alloy with higher amount of gamma' phase. The occurrence of twin boundary cracking is primarily related to the stacking fault energy (SFE) of alloys, which decreases with the increasing amounts of gamma' phase: Enhanced slip planarity and increased difficulty in cutting through twin boundary are observed in the low-SFE alloy. Therefore, twin boundary cracking is induced by cooperative effects of SFE and hydrogen in Fe-Ni based austenitic alloys. (C) 2012 Elsevier B.V. All rights reserved.
description.department[chen, shenghu ; zhao, mingjiu ; rong, lijian] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; rong, lj (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china. ; ljrong@imr.ac.cn
KeywordHydrogen Embrittlement Gamma ' Phase Grain Boundaries Twin Boundaries Stacking Fault Energy (Sfe) Strain-rate Sensitivity Stainless-steels Nanoscale Twins Fracture Metals Microstructure Embrittlement Dislocations Superalloys Mechanism
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71163
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
S. H. Chen,M. J. Zhao,L. J. Rong. Hydrogen-induced cracking behavior of twin boundary in gamma ' phase strengthened Fe-Ni based austenitic alloys[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2013,561:7-12.
APA S. H. Chen,M. J. Zhao,&L. J. Rong.(2013).Hydrogen-induced cracking behavior of twin boundary in gamma ' phase strengthened Fe-Ni based austenitic alloys.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,561,7-12.
MLA S. H. Chen,et al."Hydrogen-induced cracking behavior of twin boundary in gamma ' phase strengthened Fe-Ni based austenitic alloys".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 561(2013):7-12.
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