AA7075-T6铝合金电阻点焊工艺参数优化研究

doi:10.11896/cldb.23120177

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Abstract The lightweight structural design has emerged as a prominent research priority in the automotive industry and aerospace sectors due to its capacity for reducing overall vehicle weight and energy consumption while ensuring structural strength. This work presented the optimal welding process parameters for AA7075-T6 aluminium alloy, which were determined through orthogonal experiments. Tensile shear tests, metallographic observations, and microhardness tests were performed on the joints, followed by numerical simulations of the optimal parameter combinations to investigate the impact of welding process parameters on joint quality. The results demonstrate that spot welded joints exhibit superior integrated mechanical properties when subjected to a welding time of 60 ms, a welding current of 17 kA, and an electrode pressure of 0.22 MPa. It was observed that the order of influence exerted by welding parameters on mechanical properties of resistance spot weld joints is as follows:welding time ＞ welding current ＞ electrode pressure. The nugget size obtained from numerical simulation aligns with experimental findings. Spattering and the shrinkage defects occur within the nugget during the welding process, leading to compromised mechanical properties in joints and interfacial fracture failure modes. Due to alterations in microstructure within joints during the welding process, microhardness exhibits a ‘W' shape.

Key words： AA7075-T6 aluminium alloy resistance spot welding(RSW) process parameters microhardness numerical simulation

Published: 10 September 2024 Online: 2024-09-30

CLC number:

TG44

Fund:National Natural Science Foundation of China (52201074,51901199),the Outstanding Postdoctoral Innovative Talents Program of Hunan Province (2021RC2093).

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	Articles by authors
	QIU Sawei
	JIANG Jiachuan
	YE Tuo
	ZHANG Yue
	LEI Bei
	WANG Tao

Cite this article:

QIU Sawei,JIANG Jiachuan,YE Tuo, et al. Optimisation of Process Parameters for Resistance Spot Welding of AA7075-T6 Aluminium Alloy[J]. Materials Reports, 2024, 38(17): 23120177-8.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.23120177 OR http://www.mater-rep.com/EN/Y2024/V38/I17/23120177

1 Cui J J, Dong D Y, Wang Q, et al. Journal of Mechanical Engineering, 2021, 57(2), 70 (in Chinese).
崔俊佳, 董东营, 王琼, 等. 机械工程学报, 2021, 57(2), 70.
2 You J H. Feng Y, Wen T, et al. Materials Reports, 2022, 36(S2),367 (in Chinese).
游建豪, 冯毅, 温彤, 等. 材料导报, 2022, 36(S2), 367.
3 Chen Y J, Li S W, Meng X M, et al. Materials Reports, 2023, 37(13), 209 (in Chinese).
陈亚军, 李思伟, 孟宪明, 等. 材料导报, 2023, 37(13), 209.
4 Piott M, Werber A, Schleuss L, et al. International Journal of Advanced Manufacturing Technology, 2020, 111(5-6), 1671.
5 Qiu R F, Zhang Z L, Zhang K K, et al. Journal of Materials Engineering and Performance, 2011, 20(3), 355.
6 Zhang Z H, Li X Q, Zhu D Z, et al. Transactions of the China Welding Institution, 2022, 43(11), 68 (in Chinese).
张泽桦, 李小强, 朱德智, 等. 焊接学报, 2022, 43(11), 68.
7 Li Y, Luo Z, Yan F, et al. Materials & Design, 2014, 56, 1025.
8 Chen Y D. Chen F R. Journal of Mechanical Engineering, 2017, 53(8), 91 (in Chinese).
岑耀东, 陈芙蓉. 机械工程学报, 2017, 53(8), 91.
9 Afshari D, Sedighi M, Barsoum Z, et al. Proceedings of the Institution of Mechanical Engineers Part B-Journal of Engineering Manufacture, 2012, 226(B6), 1026.
10 Pereira A M, Ferreira J M, Loureiro A, et al. Materials & Design, 2010, 31(5), 2454.
11 Pawar S, Singh A K, Park K S, et al. Materials Characterization, 2023, 203, 113126.
12 Verma R, Arora K S, Sharma L, et al. Proceedings of the Institution of Mechanical Engineers Part E-Journal of Process Mechanical Engineering, 2021, 235(2), 505.
13 Kim G C, Hwang I, Kang M, et al. Metals and Materials International, 2019, 25(1), 207.
14 Pal T K, Bhowmick K. Journal of Materials Engineering and Performance, 2012, 21(2), 280.
15 Hassanifard S, Zehsaz M. Procedia Engineering, 2010, 2(1), 1077.
16 Mao Z D, Kan Y, Jiang Y L, et al. Journal of Mechanical Engineering, 2020, 56(16), 84 (in Chinese).
毛镇东, 阚盈, 姜云禄, 等. 机械工程学报, 2020, 56(16), 84.
17 Ghanbari H R, Shariati M, Sanati E, et al. Engineering Failure Analysis, 2022, 134, 106079.
18 Liu H, Zhu Y, Tian Y, et al. Materials Research, 2023, 26, e20220373.
19 Vigneshkumar M, Varthanan P A, Raj Y M A. Transactions of the Indian Institute of Metals, 2019, 72(2), 429.
20 Yang X, Meng T, Su Y, et al. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2024, 891, 146024.
21 Guo Z, Ma T, Yang X, et al. Chinese Journal of Aeronautics, 2024, 37(1), 312.
22 Mao Y, Ke L, Chen Y, et al. Journal of Materials Science & Technology, 2018, 34(1), 228.
23 Shen Z, Yang X, Zhang Z, et al. Materials & Design, 2013, 44, 476.