Parameters Optimization Development on Relative Density and Compression Strength of AlSi10Mg Sample Produced by Selective Laser Melting using Response Surface Method.

  • Abstract
  • Keywords
  • References
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  • Abstract

    This paper investigates the effect of main process parameters such as laser power, scanning speed and hatching distance of selective laser melting process via relative density and compression strength using response surface method. Central composite design with three factor and three level has been used to develop the mathematical models on the relative density and compression strength of AlSi10Mg samples. The maximum and minimum relative density value recorded from the experiment measurement were 99.4785% and 97.2807% which occurred at design level 16 and 2. Meanwhile the maximum and minimum value of compression strength recorded were 545.578 MPa and 456.432 MPa which occurred at design level 15 and 2. The adequacy of the suggested mathematical models were verified from the analysis of variance (ANOVA) method and used to determine the optimized results. The optimized results on relative density and compression strength from Design Expert software were 99.3547 % and 545.578MPa, respectively occurred at 348.14 watt of laser power, 1483.25 mm/s scan speed and 0.1207 mm hatch distance. The optimized parameters were confirmed with three fabricated samples with an average value of 98.1123 % relative density and 540.597 MPa. These values were within 95% confidence level and evidenced that the developed models were adequate for both experiments.



  • Keywords

    AlSi10Mg; Compression Strength; Relative Density; Response Surface Method; Selective Laser Melting.

  • References

      [1] B. Vandenbroucke and J. Kruth, “Selective laser melting of biocompatible metals for rapid manufacturing of medical parts,” Rapid Prototyp. J., vol. 13, no. 4, pp. 196–203, 2007.

      [2] M. Seabra, J. Azevedo, A. Araújo, L. Reis, E. Pinto, N. Alves, R. Santos, and J. Pedro Mortágua, “Selective laser melting (SLM) and topology optimization for lighter aerospace componentes,” Procedia Struct. Integr., vol. 1, pp. 289–296, 2016.

      [3] N. Read, W. Wang, K. Essa, and M. M. Attallah, “Selective laser melting of AlSi10Mg alloy: Process optimisation and mechanical properties development,” Mater. Des., vol. 65, pp. 417–424, 2015.

      [4] N. T. Aboulkhair, N. M. Everitt, I. Ashcroft, and C. Tuck, “Reducing porosity in AlSi10Mg parts processed by selective laser melting,” Addit. Manuf., vol. 1–4, pp. 77–86, 2014.

      [5] D. Manfredi, F. Calignano, M. Krishnan, R. Canali, E. P. Ambrosio, and E. Atzeni, “From powders to dense metal parts: Characterization of a commercial alsimg alloy processed through direct metal laser sintering,” Materials (Basel)., vol. 6, no. 3, pp. 856–869, 2013.

      [6] M. Krishnan, E. Atzeni, R. Canali, D. Manfredi, F. Calignano, E. P. Ambrosio, and L. Iuliano, “On the effect of process parameters on properties of AlSi10Mg parts produced by DMLS,” Rapid Prototyp. J., p. manuscript accepted, 2014.

      [7] N. Raghunath and P. M. Pandey, “Improving accuracy through shrinkage modelling by using Taguchi method in selective laser sintering,” Int. J. Mach. Tools Manuf., vol. 47, no. 6, pp. 985–995, 2007.

      [8] L. N. Carter, K. Essa, and M. M. Attallah, “Optimisation of selective laser melting for a high temperature Ni-superalloy,” Rapid Prototyp. J., vol. 21, no. 4, pp. 423–432, 2015.

      [9] R. A.A, W. M.S, I. M., K. K., A. Ahmed, and S. S, “Mechanical and Physical Properties of AlSi10Mg Processed through Selective Laser Melting,” Int. J. Eng. Technol., vol. 8, no. 6, pp. 2612–2618, 2016.

      [10] A. A. Raus, M. S. Wahab, Z. Shayfull, K. Kamarudin, M. Ibrahim, M. M. A. B. Abdullah, S. Z. Abd Rahim, M. F. Ghazali, N. Mat Saad, M. M. Ramli, S. A. Zainol Murad, S. S. Mat Isa, and S. Sharif, “The Influence of Selective Laser Melting Parameters on Density and Mechanical Properties of AlSi10Mg,” MATEC Web Conf., vol. 78, p. 1078, 2016.

      [11] N. T. Aboulkhair, “Additive manufacture of an aluminium alloy : processing , microstructure , and mechanical properties,” no. December, 2015.

      [12] P. George and E. Jerrard, “Selective Laser Melting of Advanced Metal Alloys for Aerospace Applications,” 2011.

      [13] K. Kempen, L. Thijs, J. Van Humbeeck, and J.-P. Kruth, “Processing AlSi10Mg by selective laser melting: parameter optimisation and material characterisation,” Mater. Sci. Technol., vol. 31, no. 8, pp. 917–923, 2015.




Article ID: 24785
DOI: 10.14419/ijet.v8i1.1.24785

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