density analysis of direct metal laser re melted 316l stainless steel
Mechanical Characterization and Modeling of Direct Metal ...
Mechanical Characterization and Modeling of Direct Metal Laser Sintered Stainless Steel GP1 Sanna F. Siddiqui, ... Elastic-Plastic Analysis of the Yield Process in Mild Steel," ... Finite Element Modeling of Selective Laser Melting 316L Stainless Steel Parts for Evaluating the Mechanical Properties.
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Electrochemical Superfinishing of Cast and ALM 316L ...
Nov 30, 2019· Our previous studies 18,19 have shown that the electropolishing behavior of ALM 316L stainless steel in acidic media is little influenced by the metal microstructure. The same polishing conditions (phospho-sulfuric acid, 70°C, 20 min at 2.3 V/SCE) resulted in a bright, smooth surface with a roughness of about 150 nm for both types of substrate ...
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Manufacturing by combining Selective Laser Melting and ...
Abstract This study presents an experimental investigation to improve Selective Laser Melting (SLM) regarding aspects such as surface roughness, density, precision and micro machining capability by employing secondary processes such as Selective Laser Erosion (SLE) and laser re-melting. SLM is a layered additive manufacturing technique for the direct fabrication of functional parts by fusing ...
Get PriceAPPLICATION OF LASER RE-MELTING ON SELECTIVE LASER .
In this study, laser re-melting is applied using a continuous wave Nd:YAG laser during SLM of AISI 316L stainless steel parts to overcome or to weaken these limitations. After each layer is fully molten, the same slice data is used to re-expose the layer for laser re-melting. In this manner, laser re-melting does not only improve the surface
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Metal 3D Printing Service for Custom Parts | Online Quoting
Direct metal laser sintering (DMLS) is an industrial metal 3D printing process that builds fully functional metal prototypes and production parts in 7 days or less. A range of metals produce final parts that can be used for end-use applications.
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A Line Heat Input Model for Additive Manufacturing ...
Jun 23, 2016· Density Analysis of Direct Metal Laser Re-Melted 316l Stainless Steel Cubic Primitives ... C., Morgan, R., Landsborough, A., and . Hon, K., 1999, " Investigation on Multi-Layer Direct Metal Laser Sintering of 316l Stainless Steel Powder Beds," CIRP Ann. Manuf. Technol. ... Finite Element Analysis of Melting and Solidifying Processes in ...
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Additive Manufacturing by Direct Metal Deposition
during laser cladding of H13 tool steel. The melt pool temperature was successfully tracked to the preset temperature profile. The addition of temperature control is par-ticularly beneficial for dissimilar metal dep-osition process. Composition monitoring is based on real-time spectroscopic analysis of the plasma plume generated during the ...
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Selective Laser Melting of Crack-Free High Density M2 High ...
Mapping and Modelling Single Scan Track Formation in Direct Metal Selective Laser Melting," ... The Investigation of the Influence of Laser Re-melting on Density, Surface Quality and Microstructure of Selective Laser Melted Parts ..., and . Kruth, J.-P., 2012, " Microstructural Investigation of Selective Laser Melting 316L Stainless Steel ...
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Single Tracks as a Key Factor in Additive Manufacturing ...
of 316L stainless steel using a wave fiber laser and an arc welding machine. Ansari [10] studied the relationships between the process and geometric parameters of single clad tracks made from an Inconel 738 superalloy. Khairallah [46] studied the features of the melt pool using computer simulations, and
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Main Defects Observed in Titanium GRADE II and 316L ...
For the purpose the stainless steel 316L and pure titanium Grade II are used. The process optimization were carried out according to the formula of energy density, which is delivered to the powder material. The stainless steel samples were divided into 12 groups, depends of the energy density.
Get PriceCharacterization of SLM Printed 316L Stainless Steel and ...
The goal of this project was firstly to characterize Cal Poly's SLM printed 316L stainless steel. SEM analysis showed Cal Poly's as-printed 316L material to have a cellular dendritic microstructure ... low-density materials for use in industries such ... Selective Laser Melting(SLM), Direct Metal Deposition(DMD) and Electron 6 (a) (b)
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Paper No. 11569 - Ohio University
Pitting Corrosion Resistance of a 316L Stainless Steel Manufactured by the Direct Metal Laser Sintering Process C. Prieto, D. Young, M. Singer Institute for Corrosion and Multiphase Technology Department of Chemical and Biomolecular Engineering Ohio University Athens, OH 45701 M. Clum, T. J. Cyders Department of Mechanical Engineering
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On The Corrosion and Metastable Pitting Characteristics of ...
On The Corrosion and Metastable Pitting Characteristics of 316L Stainless Steel Produced by Selective Laser Melting To cite this article: G. Sander et al 2017 J. Electrochem. Soc. 164 C250 View the article online for updates and enhancements. This content was downloaded from IP address 207.46.13.124 on 05/04/2020 at 19:17
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On The Corrosion and Metastable Pitting Characteristics of ...
Nov 30, 2019· AISI 316L stainless steel powder with a spherical particle size distribution from 10 to 53 μm was supplied by TLS Technik (Germany). Cubic samples were manufactured using selective laser melting (SLM) using an EOS M280 (EOS , Krailling, Germany) with an Yb-fiber laser (1070 nm) having a fixed laser diameter of 100 μm and an inert nitrogen-purged atmosphere.
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Microstructure and Corrosion Resistance of Laser ...
laps, which have been applied to 316L stainless steel.10 Applications requiring resistance to pitting and crevice corrosion often use 316L stainless steel with the following alloy chemistry:11<0.03% C, 16– 18.5% Cr, 10–14% Ni, 2–3% Mo,<2% Mn,<1% Si,<0.045% P,< 0.03% S, and balance Fe. A lower carbon content is particularly advantageous for
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Evaluation of Powder Layer Density for the Selective Laser ...
Keywords: selective laser melting, powder layer density, ˜owability, 316L stainless steel powder 1. Introduction Selective laser melting (SLM) is a powder based additive manufacturing (AM) technique that allows the layer-by-layer production of 3D metal structures directly from a computer aided design (CAD) model by selective melting of powder
Get PriceLaser Rapid Manufacturing of Stainless Steel 316L ...
Two patterns of functionally graded materials (FGMs) were successfully fabricated whose compositions gradually varied from stainless steel 316L to Inconel718 superalloy using laser engineered net shaping process. The microstructure characterization, composition analysis, and microhardness along the graded direction were investigated.
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The effect of metal EOS 316L stainless steel additive ...
Mar 24, 2019· The un-melted powder, which differs in particle size and morphology from powder, is often recycled for further builds. This work presents a study of the effects that recycling a stainless steel metal powder used in the DMLS process has on finished parts.
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Materials and Design
tion and prediction of crack initiation in 316L stainless steel manufactured by LPBF, hereafter referred to as LPBF 316L. Microstructural characterisation of LPBF 316L has been widely re-ported in literature [4–8]. The thermal history of the LPBF process re-sults in a unique microstructure with high dislocation density.
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Laser surface melting of 304 stainless J steel for pitting ...
Laser surface melting of 304 stainless steel for pitting corrosion resistance various processing parameters. Argon gas was applied into the melt pool to minimize oxidation. Samples of interest were subjected to further studies. After laser treatment, the samples were sectioned, polished and electrochemically etched with oxalic acid.
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Density of Additively-Manufactured, 316L SS Parts Using ...
@article{osti_1116929, title = {Density of Additively-Manufactured, 316L SS Parts Using Laser Powder-Bed Fusion at Powers Up to 400W}, author = {Kamath, Chandrika and El-dasher, Bassem and Gallegos, Gilbert F. and King, Wayne E. and Sisto, }, abstractNote = {Selective laser melting is a powder-based, additive-manufacturing process where a threedimensional part is produced, layer by layer ...
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Breakthrough with 3D printed stainless steel -- ScienceDaily
Using two different laser powder bed fusion machines, researchers printed thin plates of stainless steel 316L for mechanical testing. The laser melting technique inherently resulted in ...
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LLNL researchers develop efficient approach to selective ...
Jun 17, 2014· Selective laser melting (SLM) is a powder-based, additive manufacturing process where a 3D part is produced, layer by layer, using a high-energy laser beam to fuse the metal powder particles. Some SLM applications require parts that are very dense, with less than 1 percent porosity, as the pores or voids are the weakest part of the material and ...
Get PriceDensification Behavior of 316L Stainless Steel Parts ...
Densification Behavior of 316L Stainless Steel Parts Fabricated by Selective Laser Melting by Variation in Laser Energy Density. Joon-Phil Choi, Gi-Hun Shin, Mathieu Brochu, ... the as-built parts at a high energy density above 200 J/mm 3 showed irregular scan tracks with a number of pores and metal balls that decreased part density.
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[PDF] Investigation the Effect of Particle Size ...
Selective Laser Melting is an efficient process for producing metal parts with minimal subtractive post-processing required. Analysis of the parameters controlling the part quality has been performed focussing on the energy intensity during processing and the effect of the particle size distribution on factors such as ultimate tensile strength and surface finish.
Get PriceDirect Metal Laser Melting (DMLM) | GE Additive
The direct metal laser melting process minimizes the porosity common with sintering. In fact, it is possible to achieve close to 100 percent density. Enterprises can reuse the valuable unmelted metal powders. Direct metal laser melting offers short lead times ideal in situations where repeated testing of functional metal prototypes is necessary.
Get PriceTheoretical Understanding of Materials Science and Mechanics
Microstructural Properties of Direct Laser Deposited 316L Stainless Steel," Materials Science and Engineering A, 644, pp. 171- 183. • Process and design parameters should be adjusted depending on part's dimensions/geometry • Mechanical properties vary within the parts . LENS 316L SS 19
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Densification Behavior of 316L Stainless Steel Parts ...
Densification Behavior of 316L Stainless Steel Parts Fabricated by Selective Laser Melting by Variation in Laser Energy Density Joon-Phil Choi 1) 2), Gi-Hun Shin 1) 3), Mathieu Brochu 2), Yong-Jin Kim 1), Sang-Sun Yang 1), Kyung-Tae Kim 1), Dong-Yeol Yang 1) 4), Chang-Woo Lee 4), Ji-Hun Yu 1) 4)
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Abstract Introduction
(a) 316L stainless steel powder (b) Resin powder 20 µm Fig.1 Shape of 316L stainless steel power and resin powder (a) 100:3 (b) 100:4 (c) 100:5 20 µm Fig.2 Mixing state in various mixtures of stainless steel powder and resin powder Experimental procedure The laser beam was focused down on a diameter 0.85 mm spot.
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On The Corrosion and Metastable Pitting Characteristics of ...
On The Corrosion and Metastable Pitting Characteristics of 316L Stainless Steel Produced by Selective Laser Melting To cite this article: G. Sander et al 2017 J. Electrochem. Soc. 164 C250 View the article online for updates and enhancements. This content was downloaded from IP address 207.46.13.124 on 05/04/2020 at 19:17
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316L Steel Manufactured by Laser Metal Deposition and ...
Abstract: This study analyzes the local deformation behavior of austenitic stainless steel 316L, manufactured conventionally by casting and additively by laser metal deposition (LMD). We produced directionally solidified 316L specimens with most grains showing (001) orientations parallel to the longitudinal specimen axis.
Get PriceEvaluation of Powder Layer Density for the Selective Laser ...
Keywords: selective laser melting, powder layer density, ˜owability, 316L stainless steel powder 1. Introduction Selective laser melting (SLM) is a powder based additive manufacturing (AM) technique that allows the layer-by-layer production of 3D metal structures directly from a computer aided design (CAD) model by selective melting of powder
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