Micromechanism of Decrease of Impact Toughness in Coarse-Grain Heat-Affected Zone of HSLA Steel with Increasing Welding Heat Input

doi:10.1007/s11661-015-2916-2

	Micromechanism of Decrease of Impact Toughness in Coarse-Grain Heat-Affected Zone of HSLA Steel with Increasing Welding Heat Input
	Cao, R.1,2 ; Li, J.1,2; Liu, D. S.3; Ma, J. Y.1,2; Chen, J. H.1,2
	2015-07
发表期刊	METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
ISSN	1073-5623
卷号	46A 期号:7 页码:2999-3014
摘要	This paper analyzes the micromechanism of decrease of impact toughness with increasing the welding heat input in coarse-grain heat-affected zone (CGHAZ) of a low-alloy high-strength ship-building steel plate. By comparing the microstructures, measuring the extending length of the fibrous crack, identifying the critical event of cleavage fracture, measuring the critical length, and calculating the local cleavage fracture stress sigma (f), and then using the basic principles of the micromechanism of cleavage fracture, this work reveals the essential causes of deteriorated toughness in the CGHAZ of high-strength steel welded joints.
关键词	Fracture Fracture toughness High strength alloys High strength steel High-strength low-alloy steel Welded steel structures Welding Basic principles Cleavage fracture Coarse grain heat affected zone Critical events Critical length Micro mechanisms Ship-building steels Welding heat input
DOI	10.1007/s11661-015-2916-2
收录类别	SCI ; SCIE
语种	英语
资助项目	National Basic Research Program of China[2014CB660810] ; National Nature Science Foundation of China[51301083][51265028] ; Rose Willow Outstanding Individual Programs of Lanzhou university of Technology[J201203]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000354898300027
出版者	SPRINGER
EI入藏号	20151800810685
EI主题词	Heat affected zone
EI分类号	531.1 Metallurgy - 538.2 Welding - 545.3 Steel - 951 Materials Science
引用统计	被引频次：47[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/34028
专题	材料科学与工程学院
通讯作者	Cao, R.
作者单位	1.Lanzhou Univ Technol, State Key Lab Gansu Adv Proc & Recycling Nonferro, Minist Educ, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Key Lab Nonferrous Met Alloys, Minist Educ, Lanzhou 730050, Peoples R China; 3.Shasteel, Inst Res Iron & Steel, Zhangjiagang 215623, Jiangsu, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Cao, R.,Li, J.,Liu, D. S.,et al. Micromechanism of Decrease of Impact Toughness in Coarse-Grain Heat-Affected Zone of HSLA Steel with Increasing Welding Heat Input[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,2015,46A(7):2999-3014.
APA	Cao, R.,Li, J.,Liu, D. S.,Ma, J. Y.,&Chen, J. H..(2015).Micromechanism of Decrease of Impact Toughness in Coarse-Grain Heat-Affected Zone of HSLA Steel with Increasing Welding Heat Input.METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,46A(7),2999-3014.
MLA	Cao, R.,et al."Micromechanism of Decrease of Impact Toughness in Coarse-Grain Heat-Affected Zone of HSLA Steel with Increasing Welding Heat Input".METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 46A.7(2015):2999-3014.

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