Porosity formation and its effect on the properties of hybrid laser welded Al alloy joints

doi:10.1007/s00170-019-04106-1

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Porosity formation and its effect on the properties of hybrid laser welded Al alloy joints
	Yan, SH ; Zhu, ZY ; Ma, CP ; Qin, QH ; Chen, H ; Fu, YN
刊名	INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
	2019
卷号	104 期号:43959 页码:2645-2656
关键词	KEYHOLE-INDUCED POROSITY MICROSTRUCTURE ARC MECHANISM STRENGTH BEHAVIOR
ISSN号	0268-3768
DOI	10.1007/s00170-019-04106-1
文献子类	期刊论文
英文摘要	Laser-arc welding is increasingly applied for joining aluminum alloys. A critical issue in laser-arc welding Al alloys is the existence of pores which can significantly influence the in-service properties of the welded joints. How to control the porosity, therefore, is of importance in both academic and industrial worlds. In this paper, effects of welding parameters on the degree of porosity in welded joints were investigated. The distribution and size of pores were characterized by X-ray and synchrotron radiation X-ray detection methodology. It was found that the porosity was successfully controlled by adjusting welding parameters. Specifically, the macropores were reduced dramatically by increasing arc currents and decreasing laser powers. Macropore-free joints were obtained with some welding parameters. The mechanism of controlling macropores was presented. Moreover, the results from mechanical testing showed that the pores did not obviously influence the mechanical properties for low percentage of porosity in the range of near 0 to 4%, but decreased the fatigue strength of the joints. EBSD results illustrated that the grain size of the fusion zone was about 74 +/- 58 mu m, and no obvious texture was found within the fusion zone.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32164]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Australian Natl Univ, Coll Engn & Comp Sci, Res Sch Eletr Energy & Mat Engn, Acton, ACT 2601, Australia; 2.Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 3.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China; 4.Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Sichuan, Peoples R China;
推荐引用方式 GB/T 7714	Yan, SH,Zhu, ZY,Ma, CP,et al. Porosity formation and its effect on the properties of hybrid laser welded Al alloy joints[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2019,104(43959):2645-2656.
APA	Yan, SH,Zhu, ZY,Ma, CP,Qin, QH,Chen, H,&Fu, YN.(2019).Porosity formation and its effect on the properties of hybrid laser welded Al alloy joints.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,104(43959),2645-2656.
MLA	Yan, SH,et al."Porosity formation and its effect on the properties of hybrid laser welded Al alloy joints".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 104.43959(2019):2645-2656.