Effect of Metal-Powder Composition Fraction and Layer Thickness on Structure and Mechanical Properties of Alloy VT6 Synthesized Material Prepared by Selective Laser Melting

Metallurgist ◽  
2021 ◽  
Author(s):  
D. I. Sukhov ◽  
N. A. Khodirev ◽  
A. M. Rogalev ◽  
S. E. Kurkin ◽  
S. V Nerush
Keyword(s):  
Mechanical Properties ◽  
Layer Thickness ◽  
Metal Powder ◽  
Selective Laser Melting ◽  
Laser Melting ◽  
Powder Composition

A Powder Shrinkage Model for Describing Real Layer Thickness during Selective Laser Melting Process

2010 ◽  
Vol 97-101 ◽  
pp. 3820-3823 ◽  
Author(s):  
Dan Qing Zhang ◽  
Qi Zhou Cai ◽  
Jin Hui Liu ◽  
Rui Di Li
Keyword(s):  
Layer Thickness ◽  
Metal Powder ◽  
Selective Laser Melting ◽  
Melting Process ◽  
Powder Layer ◽  
Laser Melting ◽  
Selective Laser Melting Process ◽  
Mathematical Explanations ◽  
Total Shrinkage ◽  
Initial Layers

Shrinkage tends to generate when loose metal powder melted in each processing layer along the direction of layer growing during selective laser melting process, resulting in an increased real layer thickness. The shrinkage model for layer shrinkage in SLM process is established. The variation of real layer thickness and the relevant mathematical explanations are discussed in this paper. The results show that the total shrinkage of metal powder layer sharply increases in the initial layers, and then reaches to a plateau value with the increased processing layers. This value is defined by the ratio of sliced layer thickness (h) to relative density (k) during selective laser melting process.

Selective laser melting (SLM) of pure gold for manufacturing dental crowns

2014 ◽  
Vol 20 (6) ◽  
pp. 471-479 ◽  
Author(s):  
Mushtaq Khan ◽  
Phill Dickens
Keyword(s):  
Mechanical Properties ◽  
Layer Thickness ◽  
Surface Quality ◽  
Selective Laser Melting ◽  
Processing Parameters ◽  
Pure Gold ◽  
Laser Melting ◽  
Content Type ◽  
Dental Crowns ◽  
Suitable Processing

Purpose – This paper aims to present the application aspect of the work to manufacturing premolar and molar dental crowns by selective laser melting (SLM) of pure gold. Over the years different metals have been processed using laser-based Additive Manufacturing processes, but very little work has been published on the SLM of gold (Au). Previously published work presented suitable processing parameters for SLM of pure gold. Design/methodology/approach – Suitable processing parameters were used to manufacture premolar and molar dental crowns using SLM system. Different layer thickness was used to analyse the effect on surface quality of crowns. Mechanical properties are checked using nanoindentation and micro Computerized Tomography scanning. Findings – Dental crowns were successfully manufacturing using new build platform and suitable processing parameters. Parts were manufacturing using minimal supports which prevented parts from damaging during removal. A bed temperature of 100°C was found suitable for reducing warpage in the layers. Layer thickness of 50μm was found to have better surface quality and structural integrity as compared to 75μm. Porosity was found to be predominantly inter-layer. Small difference in mechanical properties of dental crowns is associated with the laser processing. Originality/value – This research is the first of its kind which presents dental crown manufacturing using SLM of pure gold.

Effect of laser speed, layer thickness, and part position on the mechanical properties of maraging 300 parts manufactured by selective laser melting

2019 ◽  
Vol 767 ◽  
pp. 138425 ◽  
Author(s):  
Adriano Fagali de Souza ◽  
Kassim S. Al-Rubaie ◽  
Sabrina Marques ◽  
Bruno Zluhan ◽  
Edson Costa Santos
Keyword(s):  
Mechanical Properties ◽  
Layer Thickness ◽  
Selective Laser Melting ◽  
Laser Melting

scholarly journals Effect of Zr content on crack formation and mechanical properties of IN738LC processed by selective laser melting

2021 ◽  
Vol 31 (5) ◽  
pp. 1350-1362
Author(s):  
Yong HU ◽  
Xiao-kang YANG ◽  
Wen-jiang KANG ◽  
Yu-tian DING ◽  
Jia-yu XU ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Selective Laser Melting ◽  
Crack Formation ◽  
Laser Melting
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