316L Stainless Steel with Gradient Porosity Fabricated by Selective Laser Melting
Source abstract
Abstract
To fabricate 316L stainless steel part with a pore gradient structure, the method using selective laser melting (SLM) technique is exploited. Scan tracks feature, densification, and tensile property of SLM-produced samples prepared via different scan speeds were investigated. The results show that the porosity is strongly influenced by scan speed. On this basis, a gradient changed scan speed was applied in every SLM layer for the purpose of producing a gradient porosity metal. The results indicate that the structure exhibits a gradually increased porosity and a reduced molten pool size along the gradient direction of scan speed variation. The forming mechanisms for the gradient porosity were also addressed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Additive Manufacturing Materials and Processes · Cellular and Composite Structures · Additive Manufacturing and 3D Printing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (17)
Show source-provided references
1. J. Banhart, Manufacture, Characterisation and Application of Cellular Metals and Metal Foams, Prog. Mater. Sci., 2001, 46(6), p 559–63210.1016/S0079-6425(00)00002-5 ↗
2. Y.P. Zhang, D.S. Li, and X.P. Zhang, Gradient Porosity and Large Pore Size NiTi Shape Memory Alloys, Scripta Mater., 2007, 57, p 1020–102310.1016/j.scriptamat.2007.07.043 ↗
3. F.R. Cichocki, K.P. Trumble, and J. Rodel, Tailored Porosity Gradients via Colloidal Infiltration of Compression-Molded Sponges, Presented at 99th Annual Meeting of the American-Ceramic-Society, May 4–7, 1997 (Cincinnati, OH), 1997
4. R. Clasen and J. Tabellion, Electric-Field-Assisted Processing of Ceramic—Part 1: Perspectives and Applications, CFI Ceram. Forum Int., 2003, 80(10), p 40–45
5. K. Nishiyabu, S. Matsuzaki, K. Okubo, M. Ishida, and S. Tanaka, Porous Graded Materials by Stacked Metal Powder Hot-Press Moulding, Presented at 8th International Symposium on Multifunctional and Functionally Graded Materials (FMG2004), July 11–14, 2004 (Leuven, Belgium), 2004
6. E.C. Santos, M. Shiomi, K. Osakada, and T. Laoui, Rapid Manufacturing of Metal Components by Laser Forming, Int. J. Mach. Tools Manuf., 2006, 46(12–13), p 1459–146810.1016/j.ijmachtools.2005.09.005 ↗
7. D.D. Gu and Y.F. Shen, Effects of Dispersion Technique and Component Ratio on Densification and Microstructure of Multi-Component Cu-Based Metal Powder in Direct Laser Sintering, J. Mater. Process. Technol., 2007, 182, p 564–57310.1016/j.jmatprotec.2006.09.026 ↗
8. J. Dutta Majumdar, A. Pinkerton, Z. Liu, I. Manna, and L. Li, Microstructure Characterisation and Process Optimization of Laser Assisted Rapid Fabrication of 316L Stainless Steel, Appl. Surf. Sci., 2005, 247, p 320–32710.1016/j.apsusc.2005.01.039 ↗
9. A. Simchi, Direct Laser Sintering of Metal Powders: Mechanism, Kinetics and Microstructural Features, Mater. Sci. Eng. A Struct. Mater. Prop. Microstruct. Process., 2006, 428, p 148–15810.1016/j.msea.2006.04.117 ↗
10. D.D. Gu, Y.F. Shen, J.L. Yang, and Y. Wang, Effects of Processing Parameters on Direct Laser Sintering of Multicomponent Cu Based Metal Powder, Mater. Sci. Technol., 2006, 22(12), p 1449–145510.1179/174328406X111057 ↗
11. A. Simchi and H. Pohl, Effects of Laser Sintering Processing Parameters on the Microstructure and Densification of Iron Powder, Mater. Sci. Eng. A Struct. Mater. Prop. Microstruct. Process., 2003, 359, p 119–12810.1016/S0921-5093(03)00341-1 ↗
12. D.D. Gu and Y.F. Shen, Processing Conditions and Microstructural Features of Porous 316L Stainless Steel Components by DMLS, Appl. Surf. Sci., 2008, 255, p 1880–188710.1016/j.apsusc.2008.06.118 ↗
13. Y.F. Shen, D.D. Gu, and P. Wu, Development of Porous 316L Stainless Steel with Controllable Microcellular Features Using Selective Laser Melting, Mater. Sci. Technol., 2008, 24, p 1501–150510.1179/174328408X287691 ↗
14. P. Fischer, V. Romano, H.P. Weber, N.P. Karapatis, E. Boillat, and R. Glardon, Sintering of Commercially Pure Titanium Powder with a Nd:YAG Laser Source, Acta Mater., 2003, 51, p 1651–166210.1016/S1359-6454(02)00567-0 ↗
15. H.J. Niu and I.T.H. Chang, Selective Laser Sintering of Gas and Water Atomized High Speed Steel Powders, Scripta Mater., 1999, 41, p 25–3010.1016/S1359-6462(99)00089-5 ↗
16. D.D. Gu and Y.F. Shen, Effects of Processing Parameters on Consolidation and Microstructure of W–Cu Components by DMLS, J. Alloys Compd., 2009, 473, p 107–11510.1016/j.jallcom.2008.05.065 ↗
17. D.D. Gu and Y.F. Shen, Influence of Cu-Liquid Content on Densification and Microstructure of Direct Laser Sintered Submicron W-Cu/Micron Cu Powder Mixture, Mater. Sci. Eng. A Struct. Mater. Prop. Microstruct. Process., 2008, 489, p 169–17710.1016/j.msea.2007.12.008 ↗