scholarly journals INFLUENCE OF HEAT TREATMENTS ON THE MICROSTRUCTURE AND TENSILE BEHAVIOUR OF SELECTIVE LASER MELTING-PRODUCED TI-6AL-4V PARTS

2016 ◽  
Vol 27 (3) ◽  
Author(s):  
Gerrit Matthys Ter Haar ◽  
Thorsten Becker ◽  
Deborah C Blaine
Keyword(s):  
Selective Laser Melting ◽  
Heat Treatments ◽  
Tensile Behaviour ◽  
Laser Melting

Influence of Heat Treatment on Microstructure and Mechanical Properties of Selective Laser Melted TiAl6V4 Alloy

2018 ◽  
Vol 284 ◽  
pp. 615-620 ◽  
Author(s):  
R.M. Baitimerov ◽  
P.A. Lykov ◽  
L.V. Radionova
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Selective Laser Melting ◽  
Room Temperature ◽  
Base Alloy ◽  
Tensile Tests ◽  
Heat Treatments ◽  
Laser Melting ◽  
Microstructure And Mechanical Properties ◽  
Treatment Procedures

TiAl6V4 titanium base alloy is widely used in aerospace and medical industries. Specimens for tensile tests from TiAl6V4 with porosity less than 0.5% was fabricated by selective laser melting (SLM). Specimens were treated using two heat treatment procedures, third batch of specimens was tested in as-fabricated statement after machining. Tensile tests were carried out at room temperature. Microstructure and mechanical properties of SLM fabricated TiAl6V4 after different heat treatments were investigated.

Mechanical Behaviour of Gas Nitrided Ti6Al4V Bars Produced by Selective Laser Melting

2016 ◽  
Vol 704 ◽  
pp. 225-234 ◽  
Author(s):  
Peter Franz ◽  
Aamir Mukhtar ◽  
Warwick Downing ◽  
Graeme Smith ◽  
Ben Jackson
Keyword(s):  
Heat Treatment ◽  
Selective Laser Melting ◽  
Nitrided Layer ◽  
Xrd Analysis ◽  
Compound Layer ◽  
Processing Parameters ◽  
Heat Treatments ◽  
Laser Melting ◽  
Gas Nitriding ◽  
Heat Treated

Gas atomized Ti-6Al-4V (Ti64) alloy powder was used to prepare distinct designed geometries with different properties by selective laser melting (SLM). Several heat treatments were investigated to find suitable processing parameters to strengthen (specially to harden) these parts for different applications. The results showed significant differences between tabulated results for heat treated billet Ti64 and SLM produced Ti64 parts, while certain mechanical properties of SLM Ti64 parts could be improved by different heat treatments using different processing parameters. Most heat treatments performed followed the trends of a reduction in tensile strength while improving ductility compared with untreated SLM Ti64 parts.Gas nitriding [GN] (diffusion-based thermo-chemical treatment) has been combined with a selected heat treatment for interstitial hardening. Heat treatment was performed below β-transus temperature using minimum flow of nitrogen gas with a controlled low pressure. The surface of the SLM produced Ti64 parts after gas nitriding showed TiN and Ti2N phases (“compound layer”, XRD analysis) and α (N) – Ti diffusion zones as well as high values of micro-hardness as compared to untreated SLM produced Ti64 parts. The microhardness profiles on cross section of the gas nitrided SLM produced samples gave information about the i) microhardness behaviour of the material, and ii) thickness of the nitrided layer, which was investigated using energy dispersive spectroscopy (EDS) and x-ray elemental analysis. Tensile properties of the gas nitrided Ti64 bars produced by SLM under different conditions were also reported.

Fabrication of Knee Prostheses by Means of SLM: Process and Functional Characterization

2018 ◽  
Author(s):  
Erica Liverani ◽  
Michele Conconi ◽  
Nicola Sancisi ◽  
Adrian H. A. Lutey ◽  
Alessandro Ascari ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Process Parameters ◽  
Functional Characterization ◽  
Heat Treatments ◽  
Knee Prostheses ◽  
Laser Melting ◽  
3D Scanner ◽  
Optimization Of Process Parameters ◽  
Design And Production

This article presents manufacturing of exemplary knee prostheses using selective laser melting (SLM) technology. All phases of design and production are considered, from acquisition of the STL build file to optimization of process parameters, printing and post-build heat treatments. Geometric differences are acquired and compared with a 3D scanner.

Characterization of the microstructure of a selective laser melting processed Al-50Si alloy: Effect of heat treatments

2017 ◽  
Vol 130 ◽  
pp. 243-249 ◽  
Author(s):  
Nan Kang ◽  
Pierre Coddet ◽  
Mohamed-Ramzi Ammar ◽  
Hanlin Liao ◽  
Christian Coddet
Keyword(s):  
Selective Laser Melting ◽  
Heat Treatments ◽  
Laser Melting ◽  
Alloy Effect

Influence of post-heat treatments on the mechanical properties of CX stainless steel fabricated by selective laser melting

2020 ◽  
Vol 55 (19) ◽  
pp. 8303-8316 ◽  
Author(s):  
Cheng Chang ◽  
Xingchen Yan ◽  
Rodolphe Bolot ◽  
Julien Gardan ◽  
Shuohong Gao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Selective Laser Melting ◽  
Heat Treatments ◽  
Laser Melting

scholarly journals Influence of post fabrication heat treatments on the fatigue behavior of Ti-6Al-4V produced by selective laser melting

2017 ◽  
Vol 7 ◽  
pp. 133-140 ◽  
Author(s):  
Gianni Nicoletto ◽  
Stefania Maisano ◽  
Michele Antolotti ◽  
Filippo Dall’Aglio
Keyword(s):  
Selective Laser Melting ◽  
Fatigue Behavior ◽  
Heat Treatments ◽  
Laser Melting

Friction and wear behaviour of Inconel 718 alloy fabricated by selective laser melting after heat treatments

2018 ◽  
Vol 98 (12) ◽  
pp. 547-555 ◽  
Author(s):  
Zhanyong Zhao ◽  
Hongqiao Qu ◽  
Peikang Bai ◽  
Jing Li ◽  
Liyun Wu ◽  
...  
Keyword(s):  
Selective Laser Melting ◽  
Inconel 718 ◽  
Friction And Wear ◽  
Heat Treatments ◽  
Wear Behaviour ◽  
Laser Melting ◽  
Inconel 718 Alloy
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