期刊
MATERIALS & DESIGN
卷 35, 期 -, 页码 760-769出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2011.10.010
关键词
Welding; Fatigue; Fractography
资金
- Department of Science and Technology (DST), Government of India [SR/FTP/ETA043/2009]
Fatigue life and fatigue crack growth behaviour of the electron beam welded AISI 409M ferritic stainless steel joints in comparison with the gas tungsten arc welded joint and the base metal was studied. It is found that the joint fabricated by the electron beam welding process exhibited superior fatigue performance than that of the gas tungsten arc welded joint. Formation of a dual phase lath ferrite with fine martensitic microstructure, superior tensile properties and favourable residual stress field are the main reasons for the enhanced fatigue life and fatigue crack resistance of the electron beam welded joint. (C) 2011 Elsevier Ltd. All rights reserved.
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