Journal ArticleDOI
Selective laser sintering of single‐ and two‐component metal powders
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In this paper, a comparative characterisation of selective laser sintering (SLS) mechanisms of single and two-component powders is presented, where the effects of the volume fraction of liquid phase and powder absorptance were discussed.Abstract:
A comparative characterisation of selective laser sintering (SLS) mechanisms of single‐ and two‐component powders is presented The effects of the volume fraction of liquid phase and the powder absorptance were discussed Single‐component Ni‐alloy, Fe and Cu powders as well as two‐component powder systems based on Ni‐alloy, Fe and Cu were investigated In particular, the following types of two‐component powder systems were studied: Ni‐alloy‐Cu and Fe‐Cu powder mixtures as well as Cu‐coated Ni‐alloy powder and Cu‐coated Fe powders SLS experiments were performed with a CW‐ Nd:YAG laser (λ=106 μm) The acting mechanism in all cases was liquid phase sinteringread more
Citations
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Journal ArticleDOI
Modeling and production of fully ferrous components by indirect selective laser sintering
TL;DR: In this article, the authors developed a methodology to achieve successful infiltration of indirect selective laser sintered steel components with ferrous alloys and thereby to produce fully ferrous components with desirable properties while preserving part geometry.
Journal ArticleDOI
Development a Cu-based Metal Powder for Selective Laser Micro Sintering
TL;DR: In this paper, a Cu-based metal powder which consists of Cu and Cu-P alloy was developed based on the theoretical analysis of the characteristics of the laser micro sintering metal powder.
Dissertation
Further process understanding and prediction on selective laser melting of stainless steel 316L
TL;DR: In this paper, a methodology for predicting the temperature distribution history and temperature gradient history during the selective laser melting (SLM) process has been developed, and a modelling methodology for the prediction of microstructure forming procedure was developed.
Dissertation
A fundamental analysis on additive manufacturing of a cemented tungsten carbide
Van Staden,Andries Coetzee +1 more
TL;DR: In this paper, the capability of the SLM process to fuse a tool grade cemented tungsten carbide material is investigated, and the optimal parameter combination is one of high laser power, low scan velocity, and high hatch spacing.
References
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PatentDOI
Direct selective laser sintering of metals
Suman Das,Joseph J. Beaman +1 more
TL;DR: In this paper, a method of fabricating a fully dense, three dimensional object by direct laser sintering is disclosed, in which a degased powder layer is dispensed over a target surface and a beam of directed energy melts metallic powder in order to form a solid layer cross section.
Journal ArticleDOI
Absorptance of powder materials suitable for laser sintering
TL;DR: In this paper, the normal spectral absorptance of a number of metal, ceramic and polymer powders susceptible to be utilised for selective laser sintering (SLS) technique was experimentally determined.
Comparison between CO2 and ND:YAG lasers for use with selective laser sintering of steel-copper powders
TL;DR: In this paper, the performance of different sources of laser disponibles for frittage selectif direct au laser des poudres metalliques without aucun liant polymere is analyzed.
Comparison between CO2 and Nd:YAG lasers for use with selective laser sintering of steel-copper powders
TL;DR: In this paper, the performance of different sources of laser disponibles for frittage selectif direct au laser des poudres metalliques without aucun liant polymere is analyzed.