Microstructure and mechanical properties of selective laser melted Ti6Al4V alloy
M Losertová,V Kubeš +1 more
- Vol. 266, Iss: 1, pp 012009
TLDR
In this paper, the properties of porous Ti6Al4V specimens processed by selective laser melting (SLM) and tested in tension and compression before and after heat treatment were evaluated.Abstract:
The present work was focused on the properties of porous Ti6Al4V specimens processed by selective laser melting (SLM) and tested in tension and compression before and after heat treatment. The SLM samples were annealed at 955 °C, water quenched and aged at 600 °C with following air cooling. The values of the mechanical tests showed that the samples exhibited high mechanical properties. The anisotropy of tensile and compressive strength was observed, which was related to the occurrence of voids. The plastic properties of specimens were improved by means of the heat treatment that led to the transformation of martensitic to lamellar structure composed of α + β phases. The microstructure of SLM samples were evaluated before and after the heat treatment. The brittle nature of failures of non-heat treated samples can be explained by synergy of martensite presence, microcracks and residual stresses produced by SLM.read more
Citations
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Microstructure and mechanical properties of 316L austenitic stainless steel processed by different SLM devices
TL;DR: In this paper, the influence of different types of selective laser melting (SLM) devices on the microstructure and the associated material properties of austenitic 316L stainless steel was examined by means of scanning electron microscopy.
Journal ArticleDOI
A Review of Heat Treatments on Improving the Quality and Residual Stresses of the Ti–6Al–4V Parts Produced by Additive Manufacturing
TL;DR: In this paper, the authors analyzed the residual stresses of the Ti-6Al-4V superalloys manufactured via Selective Laser Melting and Electron Beam Melting (EBM) and showed that the expected microstructure of the superalloy is different in both manufacturing processes.
Journal ArticleDOI
The influence of oxygen on the chemical composition and mechanical properties of Ti-6Al-4V during laser powder bed fusion (L-PBF)
Kai Dietrich,Kai Dietrich,Johannes Diller,Sophie Dubiez-Le Goff,Dominik M. Bauer,Pierre Forêt,Gerd Witt +6 more
TL;DR: In this article, the oxygen concentration in the build chamber was controlled from 2 ppm to 1000 ppm using an external measurement device, demonstrating the importance of a stable atmospheric control in laser powder bed fusion (L-PBF).
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Multi-Laser Powder Bed Fusion Benchmarking—Initial Trials with Inconel 625
TL;DR: In this article, a 4-beam powder bed fusion (L-PBF) system operating in single multi-multi mode (SM-L-PMF) is presented.
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Mechanobiological assessment of Ti-6Al-4V fabricated via selective laser melting technique: a review
TL;DR: In this paper, a literature review has been done to explore the potential of SLM fabricated Ti-6Al-4V porous lattice structures (LS) as bone substitutes.
References
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Journal ArticleDOI
Heat treatment of Ti6Al4V produced by Selective Laser Melting: Microstructure and mechanical properties
TL;DR: In this paper, the effect of several heat treatments on the microstructure and mechanical properties of Ti6Al4V processed by Selective Laser Melting (SLM) is studied.
Journal ArticleDOI
Mechanical biocompatibilities of titanium alloys for biomedical applications.
TL;DR: The following are described with regard to biomedical applications of titanium alloys: the Young's modulus, wear properties, notch fatigue strength, fatigue behaviour on relation to ageing treatment, and multifunctional deformation behaviours of Titanium alloys.
Journal ArticleDOI
Additive manufacturing of strong and ductile Ti–6Al–4V by selective laser melting via in situ martensite decomposition
TL;DR: In this paper, a new ultrafine lamellar microstructures comprising ultrafine (∼200-300nm) α-laths and retained β phases were created via promoting in situ decomposition of a near α′ martensitic structure in Ti-6Al-4V additively manufactured by selective laser melting (SLM).
Journal ArticleDOI
Effects of build orientation and heat treatment on the microstructure and mechanical properties of selective laser melted Ti6Al4V lattice structures
Ruben Wauthle,Bey Vrancken,Britt Beynaerts,Karl Jorissen,Jan Schrooten,Jean-Pierre Kruth,Jan Van Humbeeck +6 more
TL;DR: In this paper, the effect of build orientation selection and heat treatment on the mechanical properties of lattice structures with different geometries and their influence on mechanical properties was investigated, showing a significant decrease in mechanical strength for samples that are built diagonally and a transformation of the microstructure after a HIP (hot isostatic pressing) treatment, resulting in a lower maximum strength, but higher ductility.
Journal ArticleDOI
Effect of molten pool boundaries on the mechanical properties of selective laser melting parts
TL;DR: In this paper, the effect of the MPBs on microscopic slipping, macroscopic ductility and fracture mechanism of the SLM parts made along different directions, which were analyzed and evaluated using slip theory and experiments.