Anisotropy of mechanical properties of products manufactured using selective laser melting of powdered materials
Anatoliy Popovich,V. Sh. Sufiiarov,Evgenii Borisov,Igor Polozov,D. V. Masaylo,A. V. Grigoriev +5 more
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TLDR
In this paper, the results of an evaluation of mechanical properties of the samples made of Ti-6Al-4V and VT6 titanium-based alloys and Inconel 718 refractory nickel alloy in various directions are presented.Abstract:
Causes of the appearance of anisotropy of properties in products manufactured according to the technology of selective laser melting of metallic powder materials are investigated. The results of an evaluation of mechanical properties of the samples made of Ti–6Al–4V and VT6 titanium-based alloys and Inconel 718 refractory nickel alloy in various directions are presented. The dependence of their mechanical properties on the orientation of billets relative to the working platform of the installation is presented. An analysis of microslices of the Ti–6Al–4V alloy showed that the direction of the granular structure for a rectangular sample corresponds to the growth direction, while, when manufacturing thin elements of a net construction, other thermal processes flow due to their smaller cross section, which affects the crystallization conditions and microstructure being formed. Grain directions and shapes change depending on the slope angle of the element of the net structure.read more
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Powder Bed Fusion of nickel-based superalloys: A review
Salomé Sanchez,Peter Smith,Zhengkai Xu,Gabriele Gaspard,Gabriele Gaspard,Christopher J. Hyde,Wessel W. Wits,Ian Ashcroft,Hao Chen,Adam T. Clare +9 more
TL;DR: A comprehensive review of the microstructure and mechanical properties of nickel-based superalloys, manufactured using the two principle PBF techniques: Laser Powder Bed Fusion (LPBF) and Electron Beam Melting (EBM) is presented in this article.
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Investigation of the structure and mechanical properties of additively manufactured Ti-6Al-4V biomedical scaffolds designed with a Schwartz primitive unit-cell
TL;DR: In this article, the results of uniaxial compression testing were compared with results calculated using the finite element method (FEM) modelling, and a comparison between the numerical models and the experimental results suggest that the geometrical inaccuracy caused by powder adhesion has an insignificant impact on the static mechanical properties.
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Build Orientation Effects on Texture and Mechanical Properties of Selective Laser Melting Inconel 718
Glenn E. Bean,Tait D. McLouth,David B. Witkin,Scott D. Sitzman,Paul M. Adams,Rafael J. Zaldivar +5 more
TL;DR: In this article, the variation in tensile properties of Inconel 718 at varying angles with respect to build direction was investigated, and it was found that a preferred grain texture and twinning orientation that aligns with the build direction may contribute to the anisotropic enhancement in ductility.
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Corrosion performance of additively manufactured stainless steel parts: A review
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A review of NiTi shape memory alloy as a smart material produced by additive manufacturing
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References
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Metal Additive Manufacturing: A Review
TL;DR: The state-of-the-art of additive manufacturing (AM) can be classified into three categories: direct digital manufacturing, free-form fabrication, or 3D printing as discussed by the authors.
Journal ArticleDOI
Fine-structured aluminium products with controllable texture by selective laser melting of pre-alloyed AlSi10Mg powder
TL;DR: In this paper, the high thermal gradients occurring during SLM lead to a very fine microstructure with submicron-sized cells, which can be modified to a weak cube texture along the building and scanning directions when a rotation of 90° of the scanning vectors within or between the layers is applied.
Journal ArticleDOI
As-Fabricated and Heat-Treated Microstructures of the Ti-6Al-4V Alloy Processed by Selective Laser Melting
TL;DR: In this paper, the authors presented the various types of microstructure of the Ti-6Al-4V alloy after post-fabrication heat treatments below or above the β transus.
Journal ArticleDOI
Effect of the build orientation on the mechanical properties and fracture modes of SLM Ti–6Al–4V
TL;DR: In this paper, the effect of the microstructure on the tensile properties of additive manufacturing (AM) of Ti alloys has been investigated. And the authors found that the mechanical anisotropy of the parts was discussed in relation to the crystallographic texture, phase composition and the predominant fracture mechanisms.
Journal ArticleDOI
Microstructure and tensile properties of selectively laser-melted and of HIPed laser-melted Ti–6Al–4V
TL;DR: In this article, the tensile properties measured before and after HIPing were analyzed using optical microscopy, scanning electron microscopy (SEM) and X-ray diffraction (XRD).
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