Joints Collapse of Dissimilar Aluminum Alloys During Laser-Induced Arc Welding

Gang Song; Chengxue Fu; Peini Yu; Liming Liu

doi:10.3788/CJL201946.1002007

Chinese Journal of Lasers, Volume. 46, Issue 10, 1002007(2019)

Joints Collapse of Dissimilar Aluminum Alloys During Laser-Induced Arc Welding

Gang Song^*, Chengxue Fu, Peini Yu, and Liming Liu

School of Material Science and Engineering, Dalian University of Technology, Key Laboratory of Liaoning Advanced Welding and Joining Technology, Dalian, Liaoning 116024, China

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Figures & Tables(10)

Fig. 1. Diagram of laser-induced arc welding

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Fig. 2. Diagram of tensile specimen

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Fig. 3. Morphology of weld joint

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Fig. 4. Influences of welding parameters on inconsistent collapse of weld joint. (a) Joint section morphology of arc welding; (b) influence of welding current on inconsistent collapse width in arc welding; (c) influence of welding current on inconsistent collapse depth in arc welding; (d) joint section morphology of laser-induced arc welding; (e) influence of laser power on inconsistent collapse width in laser-induced arc welding; (f) influence of laser power on inconsistent collapse depth in laser-indu

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Fig. 5. Influence of joint inconsistent collapse on mechanical properties of joints. (a) Influence of inconsistent collapse on mechanical properties of joint in arc welding; (b) influence of inconsistent collapse on mechanical properties of joint in laser-induced arc welding

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Fig. 6. Stress analysis of welding joints

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Table 1. Chemical compositions of aluminum alloy to be tested
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Table 1. Chemical compositions of aluminum alloy to be tested
Material Mass fraction /%
Si Fe Cu Mn Mg Cr Al
6061 0.64 0.40 0.27 0.08 1.07 0.21 Bal.
5083 0.11 0.32 0.03 0.51 4.40 0.07 Bal.

Table 2. Parameters of arc welding
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Table 2. Parameters of arc welding
Parameter Torch angle /(°) Tungstenheight /mm Shielding gasflow /(L·min^-1) Welding speed /(mm·min^-1) Arc current /A
Value 45 2.0 15 800 70-120

Table 3. Parameters of laser-induced arc welding
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Table 3. Parameters of laser-induced arc welding
Parameter Arccurrent /A Torchangle /(°) Tungstenheight /mm Shielding gasflow /(L·min^-1) Welding speed /(mm·min^-1) Laser-arcdistance /mm Laserpower /W
Value 100 45 2.0 15 1400 2.0 400-500

Table 4. Thermophysical parameters of aluminum alloy

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Table 4. Thermophysical parameters of aluminum alloy

Material	Temperature /℃	Thermalconductivity /[J·(kg·℃)^-1]	Thermalconductivity /[W·(m·℃)^-1]
	20	900	119
	100	921	121
	200	1005	126
5083	300	1047	130
	400	1089	138
	600	1106	141
	800	1121	145
	1200	1148	146
	20	898	176
	120	951	180
	220	1003	184
6061	320	1055	188
	420	1108	192
	520	1195	196
	620	1200	198
	1100	1300	200

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Gang Song, Chengxue Fu, Peini Yu, Liming Liu. Joints Collapse of Dissimilar Aluminum Alloys During Laser-Induced Arc Welding[J]. Chinese Journal of Lasers, 2019, 46(10): 1002007

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