Weibull distribution of selective laser melted AlSi10Mg parts for compression testing

Yıl 2021, , 14 - 19, 15.06.2021

Hamaid Khan Mehmet Dirikolu Ebubekir Koç

https://doi.org/10.14744/ytu.jame.2021.00003

Öz

Selective laser melting (SLM) is an additive manufacturing process to fabricate three-dimen- sional structures by fusing powder particles using a computer-guided laser source. The SLM process can produce lightweight bespoke designs, having high strength comparable to con- ventional components. However, the developed surface texture and some of the mechanical properties are still sub-standard compared to the conventional components. The process un- certainty can produce inconsistency in parts’ properties, even those prepared concurrently, affecting SLM parts' repeatability and quality. Therefore, designing applications based on the most probable outcome of the desired properties can embrace process uncertainty. Weibull distribution is a statistical-based probability distribution method that measures the likelihood of the values’ occurrence of any random variable falling in a specific set of values. In this study, the Weibull distribution measured the relative likelihood (90% probability) of the compressive yield, and ultimate strength of the SLM prepared AlSi10Mg samples in a given 22 random sample size. The results showed that the compressive yield and ultimate strength fall between 321 MPa to 382 MPa and 665 MPa to 883 MPa.

Anahtar Kelimeler

AlSi10Mg, compression testing, selective laser sintering, weibull distribution

Kaynakça

• [1] Khan, H.M., Özer, G., Tarakci, G., Coskun, M., Koc, E., & Kaynak, Y. (2021). The impact of aging and drag-finishing on the surface integrity and corrosion behavior of the selective laser melted maraging steel samples. Materwiss Werksttech, 52, 60–73.
• [2] Weibull, W. (1951). A statistical distribution function of wide applicability. Journal of Applied Mechanics, 18, 290–293.
• [3] Borzan, C.S.M., Moldovan, M., & Bocanet, V. (2018). Evaluation of Surface Modification of PA 2200 Parts Made by Selective Laser Sintering Process. Revista De Chimie, 69, 886–889.
• [4] Chen, T., Nutter, J., Hawk, J., & Liu, X. (2014). Corrosion fatigue crack growth behavior of oil-grade nickel-base alloy 718. Part 1: effect of corrosive environment. Corrosion Science, 89, 146–153.
• [5] Khan, H.M., Karabulut, Y., Kitay, O., Kaynak, Y., & Jawahir, I.S. (2021). Influence of the post-processing operations on surface integrity of metal components produced by laser powder bed fusion additive manufacturing: a review. Machining Science Technology, 25, 118–176.
• [6] DebRoy, T., Wei, H.L., Zuback, J.S., Mukherjee, T., Elmer, J.W., Milewski, J.O., Beese, A.M., Wilson-Heid, A., De, A., & Zhang, W. (2018). Additive manufacturing of metallic components – Process , structure and properties. Progress in Materials Science, 92, 112–224.
• [7] Öter, Z.Ç., Coşkun, M., & Ebubekir, K. (2018). Effect of Building Platform Position on the Surface Quality, Dimensional Accuracy, and Geometrical Precision of Direct Metal Laser Sintering ( DMLS ) Parts, Conference: Euro PM2018 Congress & Exhibition, Bilbao, Spain, 1–5.
• [8] Buchbinder, D., Schleifenbaum, H., Heidrich, S., Meiners, W., & Bültmann, J. (2011). High power Selective Laser Melting (HP SLM) of aluminum parts. Physics Procedia, 12, 271–278.