Journal ArticleDOI
Experimental investigation and statistical optimisation of the selective laser melting process of a maraging steel
TLDR
In this article, the authors performed an experimental investigation and a successive statistical optimization of the parameters of the selective laser melting process of the 18Ni300 maraging steel and found that the best part properties were produced with the laser power bigger than 90 W and the velocity smaller than 220 mm/s.Abstract:
Selective Laser Melting (SLM) is an Additive Manufacturing process (AM) that built parts from powder using a layer-by-layer deposition technique. The control of the parameters that influence the melting and the amount of energy density involved in the process is paramount in order to get valuable parts. The objective of this paper is to perform an experimental investigation and a successive statistical optimization of the parameters of the selective laser melting process of the 18Ni300 maraging steel. The experimental investigation involved the study of the microstructure, the mechanical and surface properties of the laser maraging powder. The outcomes of experimental study demonstrated that the hardness, the mechanical strength and the surface roughness correlated positively to the part density. Parts with relative density higher than 99% had a very low porosity that presented closed and regular shaped pores. The statistical optimization determined that the best part properties were produced with the laser power bigger than 90 W and the velocity smaller than 220 mm/s.read more
Citations
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Journal ArticleDOI
Assessment of microstructural characterization and Thermo-Kinetic simulations for producing strengthened and toughened martensitic steels
TL;DR: In this paper, an attempt has been made to understand various available microstructural characterization techniques with their unique features and also predictions as made with the help of thermo-kinetic simulations for microstructure evolution.
Book ChapterDOI
Microstructure and Mechanical Properties of 1.2709 Die Steel by Selective Laser Melting
TL;DR: In this paper, the differences of microstructure and mechanical properties of die steel (1.2709) prepared by selection of laser melting (SLM) process and traditional casting-forging process were studied.
Dissertation
Investigation of in-situ alloying grade 23 Titanium with Copper by Selective Laser Melting Process for biomedical applications
TL;DR: Thesis (Master of Engineering: Mechanical Engineering) as mentioned in this paper, Central University of Technology, Free State, South Africa, USA, 6th semester, 2019, 11.30.2018
Journal ArticleDOI
Surface Finish and Property Evaluation of Direct Metal Laser Sintered (DMLS) Al-Si-10Mg alloy
TL;DR: In this article , a direct metal laser sintering (DMLS) is used to fabricate an Al-Si-10Mg aluminium alloy by DMLS process which is studied for the influence of specimen geometry, surface finish and build orientation on the mechanical strength.
Book ChapterDOI
Mold-Based Production Systems
Andreas Bührig-Polaczek,Marek Behr,Christian Hopmann,Günther Schuh,Abassin Aryobsei,Stefanie Elgeti,Markus Frings,Jan Kantelberg,Michael Riesener,Frank Schmidt,Roland Siegbert,Uwe Vroomen,Christian Windeck,Nafi Yesildag +13 more
TL;DR: A holistic methodology for an integrated product and mold design is presented based on the principles of simultaneous engineering and the potential benefit of additive manufacturing technologies—such as Selective Laser Melting (SLM)—will be evaluated and validated inasmuch as possible.
References
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Journal ArticleDOI
A study of the microstructural evolution during selective laser melting of Ti–6Al–4V
TL;DR: In this article, the development of the microstructure of the Ti-6Al-4V alloy processed by selective laser melting (SLM) was studied by light optical microscopy.
Journal ArticleDOI
Selective laser melting of iron-based powder
Jean-Pierre Kruth,Ludo Froyen,J. Van Vaerenbergh,Peter Mercelis,Marleen Rombouts,Bert Lauwers +5 more
TL;DR: In this paper, a mixture of different types of particles (Fe, Ni, Cu and Fe3P) specially developed for selective laser sintering (SLS) is described.
Journal ArticleDOI
Steady state columnar and equiaxed growth of dendrites and eutectic
TL;DR: In this article, an analysis for the growth of equiaxed grains ahead of the columnar front during directional solidification is presented, and the model considers both single-phase and eutectic growth.
Book
Properties and selection : irons, steels, and high-performance alloys
Joseph R. Davis,Lois A. Abel +1 more
TL;DR: A comprehensive guide to compositions, properties, performance, and selection of cast irons, carbon and low-alloy steels, tool steels and stainless steels is presented in this article.
Journal ArticleDOI
Additive manufactured AlSi10Mg samples using Selective Laser Melting (SLM): Microstructure, high cycle fatigue, and fracture behavior
TL;DR: In this paper, the microstructure, high cycle fatigue (HCF), and fracture behavior of additive manufactured AlSi10Mg samples are investigated, and the results were analyzed statistically by design of experiments, correlation analysis, and marginal means plots.