Effect of Nickel Contents on the Microstructure and Mechanical Properties for Low-Carbon Bainitic Weld Metals

doi:10.1007/s11665-017-2638-2

	Effect of Nickel Contents on the Microstructure and Mechanical Properties for Low-Carbon Bainitic Weld Metals
	Mao, Gaojun 1; Cao, Rui1 ; Yang, Jun 2; Jiang, Yong 3; Wang, Shuai 2; Guo, Xili 3; Yuan, Junjun 1; Zhang, Xiaobo 1; Chen, Jianhong1
	2017-05
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
卷号	26 期号:5 页码:2057-2071
摘要	Multi-pass weld metals were deposited on Q345 base steel using metal powder-flux-cored wire with various Ni contents to investigate the effects of the Ni content on the weld microstructure and property. The types of the microstructures were identified by optical microscope, scanning electron microscope, transmission electron microscope, and micro-hardness tests. As a focusing point, the lath bainite and lath martensite were distinguished by their compositions, morphologies, and hardness. In particular, a number of black plane facets appearing between lath bainite or lath martensite packets were characterized by laser scanning confocal microscope. The results indicated that with the increase in Ni contents in the range of 0, 2, 4, and 6%, the microstructures in the weld-deposited metal were changed from the domination of the granular bainite to the majority of the lath bainite and/or the lath martensite and the micro-hardness of the weld-deposited metal increased. Meanwhile, the average width of columnar grain displays a decreasing trend and prior austenite grain size decreases while increases with higher Ni content above 4%. Yield strength and ultimate tensile strength decrease, while the reduction in fracture area increases with the decreasing Ni mass fraction and the increasing test temperature, respectively. And poor yield strength in Ni6 specimen can be attributed to elements segregation caused by weld defect. Finally, micro-hardness distribution in correspondence with specimens presents as a style of cloud-map.
关键词	black plane facets micro-hardness microstructure multi-pass weld metals Ni content tensile property
DOI	10.1007/s11665-017-2638-2
收录类别	SCI ; SCIE
语种	英语
资助项目	Rose Willow Outstanding Individual Programs of Lanzhou University of Technology[J201203]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000400278100010
出版者	SPRINGER
EI入藏号	20171403539975
EI主题词	Microhardness
EI分类号	531.2 Metallography - 538.2 Welding - 538.2.1 Welding Processes - 548.1 Nickel - 804 Chemical Products Generally - 951 Materials Science
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/33290
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材料科学与工程学院_特聘教授组
通讯作者	Cao, Rui; Chen, Jianhong
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China; 3.Atlantic China Welding Concumables Inc, Zigong 643000, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Mao, Gaojun,Cao, Rui,Yang, Jun,et al. Effect of Nickel Contents on the Microstructure and Mechanical Properties for Low-Carbon Bainitic Weld Metals[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2017,26(5):2057-2071.
APA	Mao, Gaojun.,Cao, Rui.,Yang, Jun.,Jiang, Yong.,Wang, Shuai.,...&Chen, Jianhong.(2017).Effect of Nickel Contents on the Microstructure and Mechanical Properties for Low-Carbon Bainitic Weld Metals.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,26(5),2057-2071.
MLA	Mao, Gaojun,et al."Effect of Nickel Contents on the Microstructure and Mechanical Properties for Low-Carbon Bainitic Weld Metals".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 26.5(2017):2057-2071.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Mao-2017-Effect of N（9888KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载