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Effect of laser hatch style on densification behavior, microstructure, and tribological performance of aluminum alloys by selective laser melting

Published online by Cambridge University Press:  28 June 2018

Jie Liu Open the ORCID record for Jie Liu [Opens in a new window] ,
Yinglong Zhou ,
Yanbin Fan  and
Xiangyang Chen
Jie Liu*
Affiliation:
College of Mechatronics Engineering, Foshan University, Foshan, Guangdong Province 528000, China
Yinglong Zhou
Affiliation:
College of Mechatronics Engineering, Foshan University, Foshan, Guangdong Province 528000, China
Yanbin Fan
Affiliation:
College of Mechatronics Engineering, Foshan University, Foshan, Guangdong Province 528000, China
Xiangyang Chen
Affiliation:
College of Mechatronics Engineering, Foshan University, Foshan, Guangdong Province 528000, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

A systematic investigation of influence of the laser hatch style on densification behavior, microstructure, and tribological performance of aluminum parts’ preparation by selective laser melting (SLM) was implemented in this study. The scans with checker board (CB) style left better processing quality of surface morphology and few metallurgical defects to SLM parts in comparison with single fill and cross fill styles, hence leading to a relatively high densification level (99.42%). The CB style of shorter scan length left higher undercooling degree in small checker areas compared with other longer scan lengths, leading to finer equiaxed grains to the solidification microstructure. Accordingly, an enhanced mean microhardness of 129.7 HV0.1 was obtained in this hatch style, due to the grain refinement strengthening effect. The lowest coefficient of friction of 0.49 and wear rate of 2.43 × 10−4 mm3/(N m) were obtained. The improved densification level and formation of refined equiaxed grain and evenly distributed ring-shaped Si particles formed in CB parts changed the mechanism of material removal during sliding from the abrasion to adhesion of the tribolayer, significantly improving the wear resistance of SLM aluminum parts.

Keywords

lasermicrostructureAl
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 12 , 28 June 2018 , pp. 1713 - 1722
Copyright
Copyright © Materials Research Society 2018 

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References

REFERENCES

Gu, D.D., Wang, H.Q., Dai, D.H., Chang, F., Meiners, W., Hagedorn, Y.C., Wissenbach, K., Kelbassa, I., and Poprawe, R.: Densification behavior, microstructure evolution, and wear property of TiC nanoparticle reinforced AlSi10Mg bulk-form nanocomposites prepared by selective laser melting. J. Laser Appl. 27, S17003 (2015).CrossRefGoogle Scholar
Siddique, S., Awd, M., Tenkamp, J., and Walther, F.: High and very high cycle fatigue failure mechanisms in selective laser melted aluminum alloys. J. Mater. Res. 32, 1 (2017).Google Scholar
Chen, H.Y., Gu, D.D., Dai, D.H., Ma, C.L., and Xia, M.J.: Microstructure and composition homogeneity, tensile property, and underlying thermal physical mechanism of selective laser melting tool steel parts. Mater. Sci. Eng., A 682, 279 (2017).CrossRefGoogle Scholar
Attar, H., Bonisch, M., Calin, M., Zhang, L.C., Zhuravleva, K., Funk, A., Scudino, S., Yang, C., and Eckert, J.: Comparative study of microstructures and mechanical properties of in situ Ti–TiB composites produced by selective laser melting, powder metallurgy, and casting technologies. J. Mater. Res. 29, 1941 (2014).CrossRefGoogle Scholar
Gu, D.D. and Shen, Y.F.: Balling phenomena during direct laser sintering of multi-component Cu-based metal powder. J. Alloys Compd. 432, 163 (2007).Google Scholar
Sun, S.B., Zheng, L.J., Liu, Y.Y., Liu, J.H., and Zhang, H.: Characterization of Al–Fe–V–Si heat-resistant aluminum alloy components fabricated by selective laser melting. J. Mater. Res. 30, 1661 (2015).Google Scholar
Ma, C.L., Gu, D.D., Dai, D.H., Chen, W.H., Chang, F., Yuan, P.P., and Shen, Y.F.: Aluminum-based nanocomposites with hybrid reinforcements prepared by mechanical alloying and selective laser melting consolidation. J. Mater. Res. 30, 2816 (2015).Google Scholar
Simonelli, M., Tse, Y.Y., and Tuck, C.: The formation of alpha plus beta microstructure in as-fabricated selective laser melting of Ti–6Al–4V. J. Mater. Res. 29, 2028 (2014).CrossRefGoogle Scholar
Khairallah, S.A., Anderson, A.T., Rubenchik, A., and King, W.E.: Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones. Acta Mater. 108, 36 (2016).Google Scholar
Jagle, E.A., Choi, P.P., Van Humbeeck, J., and Raabe, D.: Precipitation and austenite reversion behavior of a maraging steel produced by selective laser melting. J. Mater. Res. 29, 2072 (2014).CrossRefGoogle Scholar
Raghavan, A., Wei, H.L., Palmer, T.A., and DebRoy, T.: Heat transfer and fluid flow in additive manufacturing. J. Laser Appl. 25, 052006 (2013).Google Scholar
Chen, H.Y., Gu, D.D., Xiong, J.P., and Xia, M.J.: Improving additive manufacturing processability of hard-to-process overhanging structure by selective laser melting. J. Mater. Process. Technol. 250, 99 (2017).Google Scholar
Sun, Y., Moroz, A., and Alrbaey, K.: Sliding wear characteristics and corrosion behaviour of selective laser melted 316L stainless steel. J. Mater. Eng. Perform. 23, 518 (2014).Google Scholar
Chen, Z.W., Phan, M.A.L., and Darvish, K.: Grain growth during selective laser melting of a Co–Cr–Mo alloy. J. Mater. Sci. 52, 7415 (2017).Google Scholar
Thijs, L., Montero, S., Maria, L., Wauthle, R., Xie, Q., Kruth, J.P., and Van Humbeeck, J.: Strong morphological and crystallographic texture and resulting yield strength anisotropy in selective laser melted tantalum. Acta Mater. 61, 4657 (2013).Google Scholar
Tan, C., Zhou, K., Ma, W., Zhang, P., Liu, M., and Kuang, T.: Microstructural evolution, nanoprecipitation behavior and mechanical properties of selective laser melted high-performance grade 300 maraging steel. Mater. Des. 134, 23 (2017).CrossRefGoogle Scholar
Amato, K.N., Gaytan, S.M., Murr, L.E., Martinez, E., Shindo, P.W., Hernandez, J., Collins, S., and Medina, F.: Microstructures and mechanical behavior of Inconel 718 fabricated by selective laser melting. Acta Mater. 60, 2229 (2012).CrossRefGoogle Scholar
Gu, D.D., Hagedorn, Y-C., Meiners, W., Meng, G.B., Batista, R.J.S., Wissenbach, K., and Poprawe, R.: Densification behavior, microstructure evolution, and wear performance of selective laser melting processed commercially pure titanium. Acta Mater. 60, 3849 (2012).Google Scholar
Gu, D.D. and Dai, D.H.: Role of melt behavior in modifying oxidation distribution using an interface incorporated model in selective laser melting of aluminum-based material. J. Appl. Phys. 120, 083104 (2016).Google Scholar
Gu, D.D., Meiners, W., Wissenbach, K., and Poprawe, R.: Laser additive manufacturing of metallic components: Materials, processes and mechanisms. Int. Mater. Rev. 57, 133 (2012).Google Scholar
Kruth, J.P., Froyen, L., Van, V.J., Mercelis, P., Rombouts, M., and Lauwers, B.: Selective laser melting of iron-based powder. J. Mater. Process. Technol. 149, 616 (2004).Google Scholar
Chen, H.Y. and Gu, D.D.: Effect of metallurgical defect and phase transition on geometric accuracy and wear resistance of iron-based parts fabricated by selective laser melting. J. Mater. Res. 31, 1477 (2016).CrossRefGoogle Scholar
Gu, D.D., Hagedorn, Y-C., Meiners, W., Wissenbach, K., and Poprawe, R.: Nanocrystalline TiC reinforced Ti matrix bulk-form nanocomposites by Selective Laser Melting (SLM): Densification, growth mechanism and wear behavior. Compos. Sci. Technol. 71, 1612 (2011).CrossRefGoogle Scholar
Simchi, A.: Direct laser sintering of metal powders: Mechanism, kinetics and microstructural features. Mater. Sci. Eng., A 428, 148 (2006).Google Scholar
Suryawanshi, J., Prashanth, K.G., Scudino, S., Eckert, J., Prakash, O., and Ramamurty, U.: Simultaneous enhancements of strength and toughness in an Al–12Si alloy synthesized using selective laser melting. Acta Mater. 115, 285 (2016).CrossRefGoogle Scholar
Arafune, K. and Hirata, A.: Thermal and solutal Marangoni convection in In–Ga–Sb system. J. Cryst. Growth 197, 811 (1999).Google Scholar
Li, R.D., Liu, J.H., Shi, Y.S., Wang, L., and Jiang, W.: Balling behavior of stainless steel and nickel powder during selective laser melting process. Int. J. Adv. Des. Manuf. Technol. 59, 1025 (2012).Google Scholar
Wang, D., Song, C., Yang, Y., and Bai, Y.: Investigation of crystal growth mechanism during selective laser melting and mechanical property characterization of 316L stainless steel parts. Mater. Des. 100, 291 (2016).CrossRefGoogle Scholar
Wen, S.F., Li, S., Wei, Q.S., Yan, C.Z., Zhang, S., and Shi, Y.S.: Effect of molten pool boundaries on the mechanical properties of selective laser melting parts. J. Mater. Process. Technol. 214, 2660 (2014).Google Scholar
Olakanmi, E.O., Cochrane, R.F., and Dalgarno, K.W.: A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties. Prog. Mater. Sci. 74, 401 (2015).Google Scholar
Prashanth, K.G., Scudino, S., and Eckert, J.: Defining the tensile properties of Al–12Si parts produced by selective laser melting. Acta Mater. 126, 25 (2017).Google Scholar