Microstructural evolution and mechanical property development with nickel addition in low-carbon weld butt joints

doi:10.1016/j.jmatprotec.2018.07.009

CORC > 兰州理工大学 > 兰州理工大学 > 省部共建有色金属先进加工与再利用国家重点实验室

	Microstructural evolution and mechanical property development with nickel addition in low-carbon weld butt joints
	Mao, Gaojun 1,2,3; Cao, Rui 1,2; Cayron, Cyril 3; Loge, Roland 3; Guo, Xili 4; Jiang, Yong 4; Chen, Jianhong 1,2
刊名	JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
	2018-12
卷号	262 页码:638-649
关键词	Welding wire Ni addition Microstructure Mechanical properties Closed-packed plane packets Variant selection
ISSN号	0924-0136
DOI	10.1016/j.jmatprotec.2018.07.009
英文摘要	Four metal powder flux-cored wires with added nickel (Ni) were designed to systematically investigate how Ni influences the microstructure and toughness in low-carbon bainitic weld metals (WMs). The microstructure was safely predicted by utilizing reasonable welding craft parameters (i.e., appropriate heat input and proper interpass temperature). Microstructural characterization, crystallographic analysis, microhardness mapping, fracture microparameter measurement, and finite element method calculations were all taken into account. This work showed that more martensite transformation occurs with increasing Ni and that the ductile-brittle transition temperature drops with added Ni. The boundaries with low-angle misorientation (i.e., less than 4) enhance microhardness and the optimal inclusion size is in the range of 0.3-0.45 gm, thus revealing the reasons for the resulting microhardness and toughness variations. In addition, the high-angle grain boundaries in close packed plane packets effectually prevent cracks. From a practical perspective, 4 wt.% Ni could be the best design for welding wires in the present work. This work confirmed many of the results found in recently published literature. These results provide a reference for the composition design of welding wires and the processing method of WMs.
资助项目	National Natural Science Foundation of China[51675255]
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000445986900063
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32305]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
通讯作者	Cayron, Cyril; Chen, Jianhong
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, Dept Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China 3.EPFL, PX Grp Chair, Lab Thermo Mech Met LMTM, Rue Maladiere 71b, CH-2000 Neuchatel, Switzerland 4.Atlantic China Welding Consumables Inc, Zigong 643000, Peoples R China
推荐引用方式 GB/T 7714	Mao, Gaojun,Cao, Rui,Cayron, Cyril,et al. Microstructural evolution and mechanical property development with nickel addition in low-carbon weld butt joints[J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,2018,262:638-649.
APA	Mao, Gaojun.,Cao, Rui.,Cayron, Cyril.,Loge, Roland.,Guo, Xili.,...&Chen, Jianhong.(2018).Microstructural evolution and mechanical property development with nickel addition in low-carbon weld butt joints.JOURNAL OF MATERIALS PROCESSING TECHNOLOGY,262,638-649.
MLA	Mao, Gaojun,et al."Microstructural evolution and mechanical property development with nickel addition in low-carbon weld butt joints".JOURNAL OF MATERIALS PROCESSING TECHNOLOGY 262(2018):638-649.