In-situ observation of microstructural evolution in reheated low carbon bainite weld metals with various Ni contents

doi:10.1016/S1006-706X(18)30019-0

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

	In-situ observation of microstructural evolution in reheated low carbon bainite weld metals with various Ni contents
	Mao, Gao-jun 1,2; Cao, Rui 1,2; Chen, Jian-hong 1,2; Guo, Xi-li 3; Jiang, Yong 3
刊名	JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
	2017-12
卷号	24 期号:12 页码:1206-1214
关键词	Weld metal Ni content Bainite Nucleation site Growth In-situ observation
ISSN号	1006-706X
DOI	10.1016/S1006-706X(18)30019-0
英文摘要	Microstructural evolution in weld metals was in-situ observed through utilizing a laser scanning confocal microscope at two cooling rates. The specimens with various nickel contents were adopted for the observation. In the specimen with low fraction of Ni (<= 2 wt. %), granular bainite microstructure (i.e. broad surface relief) transformation from intragranular nucleation site was in-situ observed, while, lath bainite microstructure originating from grain boundary of austenite was in-situ observed for specimens with high mass percentage of Ni (>= 4 wt. %). With increasing nickel content, the transformation temperature dropped. The prior austenite grain size was initially depressed and subsequently coarsened dramatically with the addition of Ni. The microstructure difference was ascribed to various nucleation sites and growth direction in the matrix. On account of those observations, not only the chemical component, cooling rate and microstructure were systematically correlated, but also the microstructural evolution was definite.
资助项目	National Natural Science Foundation of China[51675255] ; Pre-research of National Basic Research Program of China[2014CB660810] ; Rose Willow Outstanding Individual Programs of Lanzhou University of Technology[J201203]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL IRON STEEL RESEARCH EDITORIAL BOARD
WOS记录号	WOS:000422814600006
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32991]
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	Cao, Rui; Chen, Jian-hong
作者单位	1.Lanzhou Univ Technol, Dept Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 3.Atlantic China Welding Concumables Inc, Zigong 64300, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	Mao, Gao-jun,Cao, Rui,Chen, Jian-hong,et al. In-situ observation of microstructural evolution in reheated low carbon bainite weld metals with various Ni contents[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2017,24(12):1206-1214.
APA	Mao, Gao-jun,Cao, Rui,Chen, Jian-hong,Guo, Xi-li,&Jiang, Yong.(2017).In-situ observation of microstructural evolution in reheated low carbon bainite weld metals with various Ni contents.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,24(12),1206-1214.
MLA	Mao, Gao-jun,et al."In-situ observation of microstructural evolution in reheated low carbon bainite weld metals with various Ni contents".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 24.12(2017):1206-1214.