共 27 条
Influence of scan paths on flow dynamics and weld formations during oscillating laser welding of 5A06 aluminum alloy
被引:67
作者:

Li, Liqun
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Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China

Gong, Jianfeng
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Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China

Xia, Hongbo
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Yangzhou Univ, Sch Mech Engn, Yangzhou 225127, Jiangsu, Peoples R China Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China

Peng, Genchen
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Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China

Hao, Yu
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Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China

Meng, Shenghao
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Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China

Wang, Jiming
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h-index: 0
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Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China
机构:
[1] Harbin Inst Technol, State Key Lab Adv Welding & Joining, 92 West Dazhi St, Harbin 15001, Peoples R China
[2] Yangzhou Univ, Sch Mech Engn, Yangzhou 225127, Jiangsu, Peoples R China
来源:
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
|
2021年
/
11卷
基金:
黑龙江省自然科学基金;
关键词:
Oscillation laser welding;
Scan paths;
Numerical simulation;
Flow dynamics;
Porosity;
POROSITY FORMATION;
POOL DYNAMICS;
MELT FLOW;
KEYHOLE;
MICROSTRUCTURE;
SIMULATION;
D O I:
10.1016/j.jmrt.2020.12.102
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Numerical simulations and experiments are conducted to investigate the influence of three different scan paths, namely straight, sine, and cycloid, on the flow dynamics and weld formation during the laser welding of 5A06 aluminum alloys. The cycloid scan path produced molten pools with the largest dimensions, most regular morphology, and lowest temperature gradients. And the shallowest keyhole with the highest stability and the lowest temperature is produced under this condition, which has the effect of reducing and homogenizing the distribution of the fluid velocity. The most complicated vortices are obtained when the cycloid scan path is used. Porosity ratios of 5.5, 4.9, and 0.59 are obtained when the scan paths are straight, sine, and cycloid, respectively. The large and stable molten pool, the shallow keyhole, as well as the low and highly homogeneous melt flow velocity and the complicated vortices, contribute to reduction in porosity formation. (C) 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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收藏
页码:19 / 32
页数:14
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