Gradient characteristics and strength matching in friction stir welded joints of Fe-18Cr-16Mn-2Mo-0.85N austenitic stainless steel

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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
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	616 页码:246-251
摘要	In 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.
部门归属	[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
关键词	High-nitrogen Steel Friction Stir Welding Microstructure Gradient Mechanical Property Strength Matching Hall-petch Relationship Nitrogen
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73216
专题	中国科学院金属研究所
推荐引用方式 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.