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Gradient characteristics and strength matching in friction stir welded joints of Fe-18Cr-16Mn-2Mo-0.85N austenitic stainless steel
D. X. Du; R. D. Fu; Y. J. Li; L. Jing; Y. B. Ren; K. Yang
2014
Source PublicationMaterials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN0921-5093
Volume616Pages:246-251
AbstractIn this study, significant microstructure and mechanical property gradients were observed along the transverse and thickness directions of as-welded friction stir welded joints of Fe-18Cr-16Mn-2Mo-0.85N austenitic stainless steel. These gradients resulted in the combined overmatching feature with higher strength but lower elongation than base metal. Further, post-weld heat treatment was shown to effectively weaken these gradients in the as-welded joints. Therefore, the elongation of the joint was increased companied with enhanced strength. The tensile performances of the overmatched joints were determined by the match factors and the proportions of nugget zone (NZ) in gauge length. Further, a reduction in the match factor only resulted in obvious increment in elongation of the joint However, the best tensile properties of the joints can be achieved by simultaneously decreasing both the match factor and the proportion of the NZ in the gauge range. (C) 2014 Elsevier B.V. All rights reserved.
description.department[du, dongxu ; fu, ruidong ; li, yijun ; jing, lei] yanshan univ, state key lab metastable mat sci & technol, qinhuangdao 066004, hebei, peoples r china. [du, dongxu ; fu, ruidong ; li, yijun ; jing, lei] yanshan univ, coll mat sci & engn, qinhuangdao 066004, hebei, peoples r china. [ren, yibin ; yang, ke] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; fu, rd (reprint author), yanshan univ, state key lab metastable mat sci & technol, qinhuangdao 066004, hebei, peoples r china. ; rdfu@ysu.edu.cn
KeywordHigh-nitrogen Steel Friction Stir Welding Microstructure Gradient Mechanical Property Strength Matching Hall-petch Relationship Nitrogen
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73216
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
D. X. Du,R. D. Fu,Y. J. Li,et al. Gradient characteristics and strength matching in friction stir welded joints of Fe-18Cr-16Mn-2Mo-0.85N austenitic stainless steel[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2014,616:246-251.
APA D. X. Du,R. D. Fu,Y. J. Li,L. Jing,Y. B. Ren,&K. Yang.(2014).Gradient characteristics and strength matching in friction stir welded joints of Fe-18Cr-16Mn-2Mo-0.85N austenitic stainless steel.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,616,246-251.
MLA D. X. Du,et al."Gradient characteristics and strength matching in friction stir welded joints of Fe-18Cr-16Mn-2Mo-0.85N austenitic stainless steel".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 616(2014):246-251.
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