Abstract
Among various additive manufacturing methods, selective laser melting (SLM ) is a practical method for metal manufacturing due to its ability to make complex geometry and fabricate parts with superior mechanical properties . Utilization of high strength laser in SLM system forms a high temperature gradient which may alter microstructure of 3D printed metals due to rapid cooling during solidification process. The present study focuses on the microstructural evolution of AISI 316L stainless steel manufactured by SLM to better understand its characteristics and features for further improvement of this technology. Optical microscopy (OM), scanning electron microscopy (SEM) , X-ray diffraction (XRD ), transmission electron microscopy (TEM) , and TEM with energy dispersive X-ray spectroscopy (EDX) have been carried out on 3D printed samples. The microstructural observation indicated very low porosity with homogeneous composition throughout the specimen. A layer by layer structure with columnar grains grown in the direction of heat transfer was clearly seen in the microstructure . A dense dislocation network with a single austenite phase crystallographic structure was identified as well from nanoscale observation of the samples.
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References
Casati R, Lemke J, Vedani M (2016) Microstructure and fracture behavior of 316L austenitic stainless steel produced by selective laser melting. J Mater Sci Technol 32(8):738–744
Qiu C, Kindi MA, Aladawi AS, Hatmi IA (2018) A comprehensive study on microstructure and tensile behaviour of a selectively laser melted stainless steel. Sci Rep 8(1):7785
Tang M, Pistorius PC (2017) Oxides, porosity and fatigue performance of AlSi10Mg parts produced by selective laser melting. Int J Fatigue 94(P2):192–201
Tapia G, Elwany AH, Sang H (2016) Prediction of porosity in metal-based additive manufacturing using spatial gaussian process models. Addit Manuf 12.PB:282–290
Sun Y, Hebert RJ, Aindow M (2018) Non-metallic inclusions in 17-4PH stainless steel parts produced by selective laser melting. Mater Des 140:153–162 (2018)
Texier D, Cormier J, Villechaise P, Stinville Jean C, Torbet CJ, Pierret S, Pollock TM (2016) Crack initiation sensitivity of wrought direct aged alloy 718 in the very high cycle fatigue regime: the role of non-metallic inclusions. Mater Sci Eng A 678:122–136
Yakout M, Elbestawi M, Veldhuis S (2018) On the characterization of stainless steel 316L parts produced by selective laser melting. Int J Adv Manuf Tech 95(5):1953–1974
Konecná R, Kunz L, Nicoletto G, Baca A (2016) Fatigue crack growth behavior of inconel 718 produced by selective laser melting. Frattura ed Integritá Strutturale 35:31–40
Standard practice for microetching metals and alloys. ASTM International E407-07(2015), West Conshohocken, PA (2015)
Standard test method for metallic and inorganic coatings; metal powders and metal powder products. ASTM B311−17, Annual book of ASTM Standards, vol. 02.05, American Society for Testing and Materials, West Conshohocken, PA, 2010
Sun Z, Tan X, Tor SB, Chua CK (2018) Simultaneously enhanced strength and ductility for 3D-printed stainless steel 316L by selective laser melting. NPG Asia Mater 10(4):127–136
Zhong Y, Leifeng L, Wikman S, Cui D, Shen Z (2016) Intragranular cellular segregation network structure strengthening 316L stainless steel prepared by selective laser melting. J Nucl Mater 470:170–178
Kruth J-P, Levy G, Klocke F, Childs THC (2007) Consolidation phenomena in laser and powder-bed based layered manufacturing. CIRP Ann Manuf Technol 56(2):730–759
Cherry JA, Davies HM, Mehmood S, Lavery NP, Brown SGR, Sienz J (2015) Investigation into the effect of process parameters on microstructural and physical properties of 316L stainless steel parts by selective laser melting. Int J Adv Manuf 76(5–8):869–879
Yasa E, Kruth JP (2011) Microstructural investigation of selective laser melting 316L stainless steel parts exposed to laser re-melting. Elsevier Procedia Eng 19:389–395
Tucho WM, Lysne VH, Austbø H, Sjolyst-Kverneland A, Hansen V (2018) Investigation of effects of process parameters on microstructure and hardness of SLM manufactured SS316L. J Alloys Compd 740:910–925
Suryawanshi J, Prashanth KG, Ramamurty U (2017) Mechanical behavior of selective laser melted 316L stainless steel. Mat Sci Eng A 696:113–121
Liverani E, Toschi S, Ceschini L, Fortunato A (2017) Effect of selective laser melting (SLM) process parameters on microstructure and mechanical properties of 316L austenitic stainless steel. J Mater Process Technol 249:255–263
Kurzynowski T, Gruber K, Stopyra W, Kuźnicka B, Chlebus E (2018) Correlation between process parameters, microstructure and properties of 316 L stainless steel processed by selective laser melting. Mat Sci Eng A 718:64–73
Kong D, Ni X, Dong C, Lei X, Zhang L, Man C, Yao J, Cheng X, Li X (2018) Bio-functional and anti-corrosive 3D printing 316L stainless steel fabricated by selective laser melting. Mater Des 152:88–101
Krakhmalev P, Fredrikhsson G, Krister S, Yadroitsev I, Yadroitsava I, Thuvander M, Peng R (2018) Microstructure, solidification texture, and thermal stability of 316L stainless steel manufactured by laser powder bed fusion. Metals 8(8):643
Riemer A, Leuders S, Thöne M, Richard HA, Tröster T, Niendorf T (2014) On the fatigue crack growth behavior in 316L stainless steel manufactured by selective laser melting. Eng Fract Mech 120:15–25
Wang D, Song C, Yang Y, Bai Y (2016) Investigation of crystal growth mechanism during selective laser melting and mechanical property characterization of 316L stainless steel parts. Mater Des 100:291–299
Takata N, Nishida R, Suzuki A, Kobashi M, Kato M (2018) Crystallographic features of microstructure in maraging steel fabricated by selective laser melting. Metals 8(6):440
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Ara, I., Tangpong, X.W., Azarmi, F. (2020). Microstructural Characteristics of Stainless Steel 316L Processed by Selective Laser Melting Technology. In: TMS 2020 149th Annual Meeting & Exhibition Supplemental Proceedings. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36296-6_38
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DOI: https://doi.org/10.1007/978-3-030-36296-6_38
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