Production of a Ti6Al4V Automobile’s Lower Control Arm with EBM

Abstract:

Lattice structures and Topology Optimization are two of the main routes to design lightweight high resistance components. These design techniques often lead to complex geometries not obtainable by traditional manufacturing. In this work we show how Additive Manufacturing (AM) of metals can be a successful way to reach that result. At first, we studied Ti6Al4V samples produced by Electron Beam Melting (EBM) to determine the mechanical properties of the base material. Hot Isostatic Pressing (HIP) was performed on a part of these samples to understand the impact of this process on defects and material properties. The results we obtained showed that the properties of Ti6Al4V produced by EBM are comparable to the one of the conventionally produced one. Given these results we redesigned an automobile’s lower control arm to reduce its mass: considering both Topology Optimization (TO) and lattice structures. Ti6Al4V components with different lattice structures were successfully manufactured by EBM.

• Periodical: Key Engineering Materials (Volume 964)
• Pages: 41-46
• DOI: https://doi.org/10.4028/p-eX3nPy
• Online since: November 2023
• Authors: Daniele Mirabile Gattia, Alessandra Palombi*, Antonino Coglitore, Fabio De Pascalis, Michele Nacucci, Fania Palano, Angelo Tatì, Giuseppe Barbieri, Maria Richetta, Ugo De Angelis
• Keywords: Additive Manufacturing, EBM, Mechanical Properties, Microstructure, Ti6Al4V

References

[1] C. Sun, Y. Wang, M. Mcmurtrey, N. Jerred, F. Liou, e J. Li, Additive manufacturing for energy: A review, Applied Energy. 282 (2021).

DOI: 10.1016/j.apenergy.2020.116041

[2] S. Mohd Yusuf, S. Cutler, e N. Gao, Review: The Impact of Metal Additive Manufacturing on the Aerospace Industry, Metals. 9 (2019).

DOI: 10.3390/met9121286

[3] B. Blakey-Milner, P. Gradl, G. Snedden, M. Brooks, J. Pitot, E. Lopez, M. Leary, F. Berto, A, du Plessis, Metal additive manufacturing in aerospace: A review, Materials & Design. 209 (2021).

DOI: 10.1016/j.matdes.2021.110008

[4] E. Ghio e E. Cerri, Additive Manufacturing of AlSi10Mg and Ti6Al4V Lightweight Alloys via Laser Powder Bed Fusion: A Review of Heat Treatments Effects, Materials, 15 (2022).

DOI: 10.3390/ma15062047

[5] M. Tang, P. C. Pistorius, e J. L. Beuth, Prediction of lack-of-fusion porosity for powder bed fusion, Additive Manufacturing, 14 (2017), p.39–48.

DOI: 10.1016/j.addma.2016.12.001

[6] P. A. Chacón Santamaría, A. Sierra, O. A. González Estrada. Stress analysis of a suspension control arm. [Research Report] Universidad Industrial de Santander. (2018) hal-01916247.

[7] H. Singh, G. Bhushan, Finite Element Analysis of a Front Lower Control Arm of LCV Using Radioss Linear, (2012) National conference in NCAMT-2012 held in NITTTR, Chandigarh.

[8] X. L. Wang, L. Dai, e W. B. Shangguan, Calculation of joint forces of a multi-link suspension for strength and fatigue analysis of bushings and control arms, IJVD, 66 (2014).

DOI: 10.1504/IJVD.2014.065714

[9] S. Al-Bermani, M. Blackmore, W. Zhang, e I. Todd, The Origin of Microstructural Diversity, Texture, and Mechanical Properties in Electron Beam Melted Ti6Al4V, Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science - METALL MATER TRANS A, 41 (2010), p.3422–3434.

DOI: 10.1007/s11661-010-0397-x

[10] W. Q. Toh, P. Wang, X. Tan, M. L. S. Nai, E. Liu, e S. B. Tor, Microstructure and Wear Properties of Electron Beam Melted Ti-6Al-4V Parts: A Comparison Study against As-Cast Form, Metals, 6 (2016).

DOI: 10.3390/met6110284

[11] J. W. Elmer, T. A. Palmer, S. S. Babu, e E. D. Specht, In situ observations of lattice expansion and transformation rates of α and β phases in Ti–6Al–4V, Materials Science and Engineering: A, 391 (2005), p.104–113.

DOI: 10.1016/j.msea.2004.08.084