Study of High Temperature Properties of AlSi10Mg Alloy Produced by Laser-Based Powder Bed Fusion

Abstract:

Additive manufacturing of Al alloys can represent an interesting solution for high-performance components in various industrial fields, as for instance the automotive and aerospace industry. Often, for these applications, the alloys are required to withstand exposure to high temperatures. Therefore, the investigation of the evolution of material properties with increasing temperature is of utmost importance in order to assess their suitability for this kind of applications. In the present study, tensile properties at high temperature were investigated for an AlSi10Mg alloy. Samples were manufactured by laser-based powder bed fusion in horizontal and vertical direction in order to examine the influence of building direction on material behavior. The samples were tested in as-built condition and after exposure to high temperature. Tensile tests were performed up to 150 °C and the effect of holding time at the test temperature was evaluated. Furthermore, the alloy was characterized by mechanical spectroscopy in order to evaluate the behavior of dynamic modulus with temperature and, thus, to provide a comprehensive characterization of the material behavior. It was found that the peculiar microstructure of the alloy produced by additive manufacturing is responsible for good high-temperature strength of the material up to 150 °C. The material also exhibits a good thermal stability even after holding at test temperature for 10 h.

• Periodical: Materials Science Forum (Volume 1016)
• Pages: 1485-1491
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1016.1485
• Online since: January 2021
• Authors: Marialaura Tocci*, Alessandra Varone, Roberto Montanari, Annalisa Pola
• Keywords: Additive Manufacturing, AlSi10Mg, High Temperature, Mechanical Spectroscopy, Tensile Properties

References

[1] Dirk. Herzog, Vanessa. Seyda, Eric. Wycisk, Claus. Emmelmann, Additive manufacturing of metals, Acta Mater. 117 (2016) 371-392.

DOI: 10.1016/j.actamat.2016.07.019

[2] S.H. Huang, P. Liu, A. Mokasdar, L. Huo, Additive manufacturing and its societal impact: a literature review, Int. J. Adv. Manuf. Technol. 67 (2013) 1191-1203.

DOI: 10.1007/s00170-012-4558-5

[3] J. Zhang, B. Song, Q. Wei, D. Bourell, Y. Shi, A review of selective laser melting of aluminum alloys: Processing,microstructure, property and developing trend, J. Mater. Sci. Technol. 35 (2019) 270-284.

DOI: 10.1016/j.jmst.2018.09.004

[4] Y. Liu, C. Liu, W. Liu, Y. Ma, S. Tang, C. Liang, Q. Cai, C. Zhang, Optimization of parameters in laser powder deposition AlSi10Mg alloy using Taguchi method, Opt. Laser Technol. 111 (2019) 470-480.

DOI: 10.1016/j.optlastec.2018.10.030

[5] Z. Chen, Z. Wei, P. Wei, S. Chen, B. Lu, J. Du, J. Li, S. Zhang, Experimental Research on Selective Laser Melting AlSi10Mg Alloys: Process, Densification and Performance, J. Mater. Eng. Perform. 26 (2017) 5897-5905.

DOI: 10.1007/s11665-017-3044-5

[6] Z. Dong, Y. Liu, W. Li, J. Liang, Orientation dependency for microstructure, geometric accuracy and mechanical properties of selective laser melting AlSi10Mg lattices, J. Alloy Compd. 791 (2019) 490-500.

DOI: 10.1016/j.jallcom.2019.03.344

[7] L. Hitzler, C. Janousch, J. Schanz, M. Merkel, B. Heine, F. Mack, W. Hall, A. Ochsner, Direction and location dependency of selective laser melted AlSi10Mg specimens, J. Mater. Process. Tech. 243 (2017) 48-61.

DOI: 10.1016/j.jmatprotec.2016.11.029

[8] F. Del Re, V. Contaldi, A. Astarita, B. Palumbo, A. Squillace, P. Corrado, P. Di Petta, Statistical approach for assessing the effect of powder reuse on the final quality of AlSi10Mg parts produced by laser powder bed fusion additive manufacturing, Int. J. Adv. Manuf. Tech. 97 (2018) 2231-2240.

DOI: 10.1007/s00170-018-2090-y

[9] N.T. Aboulkhair, I. Maskery, C. Tuck, I. Ashcroft, N.M. Everitt, The microstructure and mechanical properties of selectively laser melted AlSi10Mg: the effect of a conventional T6-like heat treatment, Mat. Sci. Eng. A 667 (2016) 139-146.

DOI: 10.1016/j.msea.2016.04.092

[10] J. Fiocchi, A. Tuissi, P. Bassani, C.A. Biffi, Low temperature annealing dedicated to AlSi10Mg selective laser melting products, J. Alloy Compd. 695 (2017) 3402-3409.

DOI: 10.1016/j.jallcom.2016.12.019

[11] L. Girelli, M. Tocci, M. Gelfi, A. Pola, Study of heat treatment parameters for additively manufactured AlSi10Mg in comparison with corresponding cast alloy, Mat. Sci. Eng. A 739 (2019) 317-328.

DOI: 10.1016/j.msea.2018.10.026

[12] N.E. Uzan, R. Shneck, O. Yeheskel, N. Frage, High-temperature mechanical properties of AlSi10Mg specimens fabricated by additive manufacturing using selective laser melting technologies (AM-SLM), Additive Manufacturing 24 (2018) 257-263.

DOI: 10.1016/j.addma.2018.09.033

[13] M. Fousovà, D. Dvorsky, A. Machalcovà, D. Vojtech, Changes in the microstructure and mechanical properties of additively manufactured AlSi10Mg alloy after exposure to elevated temperatures, Mater. Charact. 137 (2018) 119-126.

DOI: 10.1016/j.matchar.2018.01.028

[14] S. Amadori, E.G. Campari, A.L. Fiorini, R. Montanari, L. Pasquini, L. Savini, E. Bonetti, Automated resonant vibrating-reed analyzer apparatus for a non-destructive characterization of materials for industrial applications, Mat. Sci. Eng. A 442 (2006) 534-536.

DOI: 10.1016/j.msea.2006.02.210

[15] J. Wu, X. Wang, W. Wang, M. Attallah, M. Loretto, Microstructure and strength of selectively laser melted AlSi10Mg, Acta Mater. 117 (2016) 311-320.

DOI: 10.1016/j.actamat.2016.07.012

[16] L. Zhou, A. Mehta, E. Schulz, B. McWilliams, K. Cho, Y. Sohn, Microstructure, precipitates and hardness of selectively laser melted AlSi10Mg alloy before and after heat treatment, Mat. Charact. 143 (2018) 5-17.

DOI: 10.1016/j.matchar.2018.04.022

[17] U. Tradowsky, J. White, R.M. Ward, N. Read, W. Reimers, M.M. Attallah, Selective laser melting of AlSi10Mg: Influence of post-processing on the microstructural and tensile properties development, Mat. Des. 105 (2016) 212-222.

DOI: 10.1016/j.matdes.2016.05.066

[18] I. Rosenthal, R. Shneck, A. Stern, Heat treatment effect on the mechanical properties and fracture mechanism in AlSi10Mg fabricated by additive manufacturing selective laser melting process, Mat. Sci. Eng. A 729 (2018) 310-322.

DOI: 10.1016/j.msea.2018.05.074

[19] S. Kahl, H.-E. Ekstrom, J. Mendoza, Tensile, Fatigue, and Creep Properties of Aluminum Heat Exchanger Tube Alloys for Temperatures from 293 K to 573 K (20 °C to 300 °C), Metall. Mater. Trans. A 45 (2013) 663-681.

DOI: 10.1007/s11661-013-2003-5

[20] N.T. Aboulkhair, C. Tuck, I. Ashcroft, I. Maskery, N.M. Everitt, On the precipitation hardening of selective laser melted AlSi10Mg, Metall. Mater. Trans. A 46A (2015) 3337-3341.

DOI: 10.1007/s11661-015-2980-7

[21] A. Hadadzadeh, B.S. Amirkhiz, M. Mohammadi, Contribution of Mg2Si precipitates to the strength of direct metal laser sintered AlSi10Mg, Mat. Sci. Eng. A 739 (2019) 295-300.

DOI: 10.1016/j.msea.2018.10.055