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
Simultaneous Enhancement of Strength and Toughness in a Medium-Carbon Martensitic Steel by Ti-Mo Addition
Journal ArticleDOI
Crystal growth mechanism and mechanical properties of Ti-6Al-4 V alloy during selective laser melting
TL;DR: In this paper , the microstructure evolution and mechanical properties of Ti-6Al-4 V alloy fabricated by SLM were investigated with various energy densities, and the results indicated that grain size and densification degree could have a considerable impact on mechanical properties.
DissertationDOI
Additive manufacturing of high tensile strength steel for offshore & marine 3D complex joint applications
Journal ArticleDOI
A review on laser beam machining process modeling and optimization
V B Magdum,Jayant K. Kittur +1 more
TL;DR: In this paper, the authors focused on the probable usage of LBM for various materials machining, current progress, benefits and challenges in machining and process parameters and performance characteristics, modeling and optimization.
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.