Abstract
In the past for current-conducting components copper was primarily used. Due to high material price and limited availability of copper, aluminum appears as a great alternative, especially since a higher weight-specific electrical conductivity is achievable and the lightweight construction is optimized. Excellent processing properties make this newest Al–Mg–Si alloy more than just a cheap alternative. Within the product development of the new 6xxx Al–Mg–Si alloy with high electric conductivity, the alloying elements and their solution state played key roles in reducing electrical resistance. Additionally, very good processing properties can be achieved, whereby the material required a specific strength and still has good bendability. During the production process, these properties were generated via a new solution heat treatment approach and subsequent over-aging. Results showed the new aluminum grade achieves an electrical conductivity of 58%IACS (International Annealed Copper Standard) and a crack-free 180° bend according to ASTM E290 (bending factor N = 1). Therefore, this aluminum alloy is ideal for use as a bus bar in EV batteries or other current-conducting applications such as EV charging stations.
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References
Man Y (2016) Aluminium cables in automotive applications: Prestudy of aluminium cable uses in Scania products & failure analysis and evaluation. KTH Royal Institute of Technology, Stockholm http://kth.diva-portal.org/smash/get/diva2%3A954680/FULLTEXT01.pdf. Accessed 18 August 2023
Mondolfo LF (1979) Aluminum alloys - Structure and properties. Butterworths, London
London Metal Exchange (2023). In: LME Historical Market Data - LME Monthly Average Prices. https://www.lme.com/en/Market-data/Accessing-market-data/Historical-data. Accessed 28 August 2023
Flores EU, Seidman DN, Dunand DC & Vo NQ (2018) Development of high-strength and high-electrical-conductivity aluminum alloys for power transmission conductors. Light Metals 247(15):247–251. https://doi.org/10.1007/978-3-319-72284-9_34
Sampaio R, Zwicker MFR, Pragana JPM, Bragança I, et al. (2022). Busbars for e-mobility: State-of-the-Art Review and a New Joining by Forming Technology. In Davim JP (Ed.), Mechanical and Industrial Engineering. Materials Forming, Machining and Tribology. Springer, Cham, p 111–141. https://doi.org/10.1007/978-3-030-90487-6_4
Fortin PE (1972) Factors influencing electrical conductivity and strength of aluminum and its alloys. Canadian Metallurgical Quarterly 11(2):309–315. https://doi.org/10.1179/cmq.1972.11.2.309
Banhart J, Sin Ting Chang C, Liang Z, et al. (2010): Natural Aging in Al–Mg–Si Alloys - A process of unexpected complexity. Advanced Engineering Materials 12(7):559–571. https://doi.org/10.1002/adem.201000041
Aruga Y, Kozuka M, Takaki Y & Sato T (2016) Effects of natural aging after pre-aging on clustering and bake-hardening behavior in an Al–Mg–Si alloy. Scripta Materialia 116:82–86. https://doi.org/10.1016/j.scriptamat.2016.01.019
Khangholi S, Javidani M, Maltais A & Chen G (2022) Review on recent progress in Al–Mg–Si 6xxx conductor alloys. Journal of Materials Research 37(3):670–691.https://doi.org/10.1557/s43578-022-00488-3
Sauvage X, Bobruk EV, Murashkin MY, et al. (2015) Optimization of electrical conductivity and strength combination by structure design at the nanoscale in Al–Mg–Si alloys. Acta Materialia 98:355–366. https://doi.org/10.1016/j.actamat.2015.07.039
Pogatscher S, Antrekowitsch H, Leitner H, et al. (2011) Mechanisms controlling the artificial aging of Al–Mg–Si Alloys. Acta Materialia 59 (9):3352–3363. https://doi.org/10.1016/j.actamat.2011.02.010
Sunde JK, Marioara CD, Wenner S & Holmestad R (2021) On the microstructural origins of improvements in conductivity by heavy deformation and ageing of Al-Mg-Si alloy 6101. Materials Characterization 176. https://doi.org/10.1016/j.matchar.2021.111073
Xu X, Yang Z, Ye Y, et al. (2016) Effects of various Mg/Si ratios on microstructure and performance property of Al-Mg-Si alloy cables. Materials Characterization 119:114–119. https://doi.org/10.1016/j.matchar.2016.07.011
Liu CH, Chen J, Lai YX, et al. (2015) Enhancing electrical conductivity and strength in Al alloys by modification of conventional thermo-mechanical process. Materials & Design 87:1–5. https://doi.org/10.1016/j.matdes.2015.07.133
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Michael, G., Berneder, J., Lorenz, R. (2024). New 6xxx Al–Mg–Si Alloy with High Electric Conductivity and Great Bendability for EV Applications. In: Wagstaff, S. (eds) Light Metals 2024. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50308-5_16
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