Fatigue crack growth behavior of Ni-Cr-Mo-V steel welded joints considering strength mismatch effect

doi:10.1016/j.ijfatigue.2021.106389

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Fatigue crack growth behavior of Ni-Cr-Mo-V steel welded joints considering strength mismatch effect
	Song, Wei 6; Wang, Ping 5; Wan, Di 4; Qian GA(钱桂安)3; Correia, Jose 1,2; Berto, Filippo 4
刊名	INTERNATIONAL JOURNAL OF FATIGUE
	2021-10-01
卷号	151 页码:17
关键词	10CrNi3MoV steel Fatigue crack growth Welded joints R-ratio effect Material heterogeneity Mismatch
ISSN号	0142-1123
DOI	10.1016/j.ijfatigue.2021.106389
通讯作者	Song, Wei(swingways@hotmail.com)
英文摘要	High strength steel welded joints are usually fabricated by heterogeneous weld metal for reducing the negative impacts of microstructural characteristics and defects on mechanical properties, such as hydrogen embrittlement cracking, joint toughness decreasing, etc. To reflect material heterogeneity in the mechanical characteristics, two kinds of weld filler material are selected to obtain Evenmatched Welded Material (E-WM) and Undermatched Welded Material (U-WM) marine Ni-Cr-Mo-V steel welded joints. The Fatigue Crack Growth (FCG) behaviors of Base Metal (BM) and related welded joints are investigated considering load ratio (0.1, 0.4, 0.7) and specimen state (as-welded and heat-treated) effects. The experimental FCG trends for BM and weldments have been compared with the trends available in standards. The FCG rate (da/dN) results show the U-WM demonstrates higher FCGR curves than BM and E-WM. Additionally, it demonstrates no significant difference about FCGR for E-WM and U-WM under high R-ratios (0.4 and 0.7). Moreover, both E-WM and U-WM in as-welded state presents higher fatigue crack propagation resistance than in the Post Welded Heat Treatment (PWHT) state. The fracture mechanism of FCG was analyzed according to the fatigue crack trajectory in microstructures and fractography. Transgranular fracture behavior were observed with some secondary particles in E-WM, while the intergranular fracture was exhibited with few tiny secondary microcracks in U-WM.
分类号	一类
资助项目	Natural Science Foundation of Jiangsu Province[BK20200174] ; Natural Science Foundation of the Higher Education Institutions of Jiangsu Province[20KJB430008] ; Qinglan Project in Jiangsu Province
WOS关键词	AUSTENITIC STAINLESS-STEEL ; LOW-ALLOY STEEL ; MECHANICAL-PROPERTIES ; HEAT INPUT ; HYDROGEN EMBRITTLEMENT ; BASE-METAL ; STRESS ; MICROSTRUCTURE ; PROPAGATION ; TOUGHNESS
WOS研究方向	Engineering ; Materials Science
语种	英语
WOS记录号	WOS:000678063200002
资助机构	Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of the Higher Education Institutions of Jiangsu Province ; Qinglan Project in Jiangsu Province
其他责任者	Song, Wei
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87158]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Porto, Inst R&D Struct & Construct, P-4200465 Porto, Portugal 2.Univ Coimbra, Inst Sustainabil & Innovat Struct Engn, P-3030790 Coimbra, Portugal; 3.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 4.Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway; 5.Harbin Inst Technol, Sch Ocean Engn, Weihai 264209, Peoples R China; 6.Xuzhou Univ Technol, Sch Mech & Elect Engn, Xuzhou 221018, Jiangsu, Peoples R China;
推荐引用方式 GB/T 7714	Song, Wei,Wang, Ping,Wan, Di,et al. Fatigue crack growth behavior of Ni-Cr-Mo-V steel welded joints considering strength mismatch effect[J]. INTERNATIONAL JOURNAL OF FATIGUE,2021,151:17.
APA	Song, Wei,Wang, Ping,Wan, Di,钱桂安,Correia, Jose,&Berto, Filippo.(2021).Fatigue crack growth behavior of Ni-Cr-Mo-V steel welded joints considering strength mismatch effect.INTERNATIONAL JOURNAL OF FATIGUE,151,17.
MLA	Song, Wei,et al."Fatigue crack growth behavior of Ni-Cr-Mo-V steel welded joints considering strength mismatch effect".INTERNATIONAL JOURNAL OF FATIGUE 151(2021):17.