Effects of Boron on the Microstructure, Ductility-dip-cracking, and Tensile Properties for NiCrFe-7 Weld Metal

IMR OpenIR

	Effects of Boron on the Microstructure, Ductility-dip-cracking, and Tensile Properties for NiCrFe-7 Weld Metal
	Mo, Wenlin; Hu, Xiaobing; Lu, Shanping; Li, Dianzhong; Li, Yiyi; shplu@imr.ac.cn
	2015
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	31 期号:12 页码:1258-1267
摘要	The distribution of boron and the microstructure of grain boundary (GB) precipitates (M-23(C, B)(6) and M2B) have been analyzed with their effects on the susceptibility of ductility-dip-cracking (DDC) and tensile properties for NiCrFe-7 weld metal, using optical microscopy (OM), secondary ion mass spectroscopy (SIMS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The results show that boron segregates at GBs in NiCrFe-7 weld metal during the welding process. The segregation of boron at GBs promotes the formation of continuous M-23(C, B)(6) carbide chains and M2B borides along GBs. The addition of boron aggravates GB embrittlement and causes more DDC in the weld metal, by its segregation at GBs presenting as an impurity, and promoting the formation of larger and continuous M-23(C, B)(6) carbides, and M2B borides along GBs. DDC in the weld metal deteriorates the ductility and tensile strength of the weld metal simultaneously. Copyright (C) 2015, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved.
部门归属	[mo, wenlin ; hu, xiaobing ; lu, shanping ; li, dianzhong ; li, yiyi] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [mo, wenlin ; lu, shanping] chinese acad sci, inst met res, key lab nucl mat & safety assessment, shenyang 110016, peoples r china
关键词	Boron M23c6 M2b Ductility-dip-cracking Tensile Properties
资助者	National Natural Science Foundation of China [51474203]; Key Research Program of the Chinese Academy of Sciences [KGZD-EW-XXX-2]
收录类别	sci
语种	英语
WOS记录号	WOS:000366158000015
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74781
专题	中国科学院金属研究所
通讯作者	shplu@imr.ac.cn
推荐引用方式 GB/T 7714	Mo, Wenlin,Hu, Xiaobing,Lu, Shanping,et al. Effects of Boron on the Microstructure, Ductility-dip-cracking, and Tensile Properties for NiCrFe-7 Weld Metal[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2015,31(12):1258-1267.
APA	Mo, Wenlin,Hu, Xiaobing,Lu, Shanping,Li, Dianzhong,Li, Yiyi,&shplu@imr.ac.cn.(2015).Effects of Boron on the Microstructure, Ductility-dip-cracking, and Tensile Properties for NiCrFe-7 Weld Metal.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,31(12),1258-1267.
MLA	Mo, Wenlin,et al."Effects of Boron on the Microstructure, Ductility-dip-cracking, and Tensile Properties for NiCrFe-7 Weld Metal".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 31.12(2015):1258-1267.