Aluminum Alloy/Carbon Fiber Reinforced Thermoplastic Laser Butt Welding

Ye Yiyun; Jia Shaohui; Jiao Junke; Shu Xuedao

doi:10.3788/CJL202047.1002003

Journals >Chinese Journal of Lasers >Volume 47 >Issue 10 >Page 1002003 > Article

Chinese Journal of Lasers
Vol. 47, Issue 10, 1002003 (2020)

Aluminum Alloy/Carbon Fiber Reinforced Thermoplastic Laser Butt Welding

Ye Yiyun^1、2, Jia Shaohui², Jiao Junke^2、*, and Shu Xuedao¹

Author Affiliations

¹College of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China

²Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, China

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DOI: 10.3788/CJL202047.1002003 Cite this Article Set citation alerts

Ye Yiyun, Jia Shaohui, Jiao Junke, Shu Xuedao. Aluminum Alloy/Carbon Fiber Reinforced Thermoplastic Laser Butt Welding[J]. Chinese Journal of Lasers, 2020, 47(10): 1002003 Copy Citation Text

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Fig. 1. Schematic of welding fixture and welding principle

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Fig. 4. Temperature measuring device and method

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Fig. 5. Tensile strength obtained in each experimental group

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Fig. 6. Schematic of samples. (a) Failed welding sample; (b) successful welding sample

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$Surface appearance of sample A joint after fracture. (a) Aluminum alloy surface; (b) composite surface$

Fig. 7. Surface appearance of sample A joint after fracture. (a) Aluminum alloy surface; (b) composite surface

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$Surface appearance of sample B joint after fracture. (a) Aluminum alloy surface; (b) composite surface$

Fig. 8. Surface appearance of sample B joint after fracture. (a) Aluminum alloy surface; (b) composite surface

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$Surface appearance of sample C joint after fracture. (a) Aluminum alloy surface; (b) composite surface$

Fig. 9. Surface appearance of sample C joint after fracture. (a) Aluminum alloy surface; (b) composite surface

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$Surface appearance of sample D joint after fracture. (a) Aluminum alloy surface; (b) composite surface$

Fig. 10. Surface appearance of sample D joint after fracture. (a) Aluminum alloy surface; (b) composite surface

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Fig. 11. Measured joint temperature during welding process

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Material	Density /(kg·m^-3)	Specific heat /(J·Kg^-1·℃^-1)	Thermal conductivity /(W·m^-1·℃^-1)	Melting point /℃	Decompositiontemperature /℃
PA	1150	2500	0.25	215--225	330
T700	1760	712	6.5	3000
7075-T6	2800	860--1320	130	475--635

Table 1. Thermophysical parameters of materials

Level	Factor
Level	Laser powerP /W	Welding speedv /(mm·s^-1)	Stirring amplitudeΦ /mm	Stirring frequencyf /Hz	Clamp pressureP /MPa	Defocusing amountd /mm
1	250	2	0.6	10	0.1	25
2	300	4	0.8	20	0.2	30
3	350	6	1.0	30	0.3	35
4	400	8	1.2	40	0.4	40
5	450	10	1.4	50	0.5	45

Table 2. Configuration of experiment parameters

Number	Laser powerP /W	Welding speedv /(mm·s^-1)	Stirringamplitude Φ /mm	Stirring frequencyf /Hz	Clamp pressureP /MPa	Defocusingamount d /mm
1	250	2	0.6	10	0.1	25
2	250	4	0.8	20	0.2	30
3	250	6	1.0	30	0.3	35
4	250	8	1.2	40	0.4	40
5	250	10	1.4	50	0.5	45
6	300	2	0.8	30	0.4	45
7(A)	300	4	1.0	40	0.5	25
8	300	6	1.2	50	0.1	30
9(D)	300	8	1.4	10	0.2	35
10	300	10	0.6	20	0.3	40
11	350	2	1.0	50	0.2	40
12	350	4	1.2	10	0.3	45
13	350	6	1.4	20	0.4	25
14(B)	350	8	0.6	30	0.5	30
15	350	10	0.8	40	0.1	35
16	400	2	1.2	20	0.5	35
17(C)	400	4	1.4	30	0.1	40
18	400	6	0.6	40	0.2	45
19	400	8	0.8	50	0.3	25
20	400	10	1.0	10	0.4	30
21	450	2	1.4	40	0.3	30
22	450	4	0.6	50	0.4	35
23	450	6	0.8	10	0.5	40
24	450	8	1.0	20	0.1	45
25	450	10	1.2	30	0.2	25

Table 3. Orthogonal experimental design

Range	Factor
Range	Laser power	Weldingspeed	Stir theamplitude	The stirringfrequency	Clamp pressure	Defocusingamount
k_J1	248.96	79.70	336.56	280.78	256.62	351.82
k_J2	228.58	339.54	157.54	157.26	239.36	237.08
k_J3	267.50	211.72	243.18	240.02	256.40	95.06
k_J4	330.44	331.68	242.98	326.62	153.06	174.94
k_J5	80.46	193.30	175.68	151.26	250.50	297.04
R_J	249.98	259.84	179.02	175.36	103.56	256.76
Rank	3	1	4	5	6	2

Table 4. Range analysis of orthogonal experiment

Ye Yiyun, Jia Shaohui, Jiao Junke, Shu Xuedao. Aluminum Alloy/Carbon Fiber Reinforced Thermoplastic Laser Butt Welding[J]. Chinese Journal of Lasers, 2020, 47(10): 1002003

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