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Showing papers in "Materials & Design in 2016"


Journal ArticleDOI
TL;DR: The dynamic recrystallization (DRX) phenomena occurring in different thermo-mechanical processing (TMP) conditions for various metallic materials are reviewed in this article.

1,177 citations


Journal ArticleDOI
TL;DR: In this paper, the state-of-the-art with respect to inspection methodologies compatible with additively manufactured (AM) processes is explored with the intention of identifying new avenues for research and proposing approaches to integration into future generations of AM systems.

1,024 citations


Journal ArticleDOI
TL;DR: In this article, a new additive manufacturing processing route is introduced for ultra-high performance concrete, in which a material is deposited layer by layer through an extrusion printhead mounted on a 6-axis robotic arm.

628 citations


Journal ArticleDOI
TL;DR: In this article, the morphology and substructure of α′ martensite in Ti-6Al-4V cuboid samples produced by selective laser melting (SLM) have been investigated to explore the formation mechanism and control method.

527 citations


Journal ArticleDOI
TL;DR: In this article, the porosity is investigated by 2D and 3D methods aiming to identify the mechanisms of void formation, their morphology as well as volume fraction as a function of the energy density.

503 citations


Journal ArticleDOI
TL;DR: In this article, the authors employed fast scanning speeds to fabricate high-density stainless steel 316L (SS316L) parts via selective laser melting (SLM) to improve the production rate while maintaining a low porosity for the SLM-built parts.

485 citations


Journal ArticleDOI
TL;DR: In this article, the microstructure and mechanical properties of SLM and EBM Ti-6Al-4V samples have been compared and the effect of part size and orientation on the defects, micro-structure, and their contribution to the tensile and fatigue properties were elucidated.

481 citations


Journal ArticleDOI
TL;DR: In this article, an Acrylonitrile butadiene styrene (ABS) nanocomposites with organic modified montmorillonite (OMMT) were prepared by melt intercalation and evaluated by tensile, flexural, thermal expansion and dynamic mechanical tests.

444 citations


Journal ArticleDOI
TL;DR: In this paper, a fundamental investigation of the development of grain structure of 316L stainless steel fabricated by selective laser melting (SLM) was conducted, which revealed the growth mechanism of grains under rapid solidification conditions.

422 citations


Journal ArticleDOI
TL;DR: In this paper, the effect of printing parameters on the mechanical properties involved in this new process, and more particularly in the case of Fused Deposition Modeling (FDM).

342 citations


Journal ArticleDOI
TL;DR: In this paper, the authors provide an experimental investigation of the mechanical properties of SLM AlSi12Mg lattice structures for optimised process parameters as well as the manufacturability of lattice strut elements for a series of build inclinations and strut diameters.

Journal ArticleDOI
TL;DR: In this article, a three dimensional finite element model (FEM) is introduced in order to simulate the melt pool size during the Selective Laser Melting (SLM) process, which adopts the Optical Penetration Depth (OPD) of laser beam into the powder bed and its dependency on the powder size in definition of the heat source.

Journal ArticleDOI
TL;DR: In this paper, the authors describe the mechanical behaviour of FDM parts by the classical laminate theory (CLT) and experimentally measure the values of the elastic modulus in the longitudinal and transverse directions to the fibre (E1, E2), the Poisson's modulus (ν12), and the shear modulus(G12) in order to reach this objective.

Journal ArticleDOI
TL;DR: In this paper, the formation of disordered solid solution in the hexagonal close-packed (hcp) structure in the GdHoLaTbY alloy and its mechanical properties were investigated.

Journal ArticleDOI
TL;DR: In this article, a shot-peening (SP) process was used to induce grain refinements through creating severe plastic deformation at the outer surface layers to improve the physical and mechanical properties of 17-4 stainless steel components produced by DMLS.

Journal ArticleDOI
TL;DR: In this paper, the microstructure and residual stress built-up in Ti-6Al-4V AM components produced by Wire-+-Arc Additive Manufacturing (WAAM) and by laser cladding process (CLAD) were compared.

Journal ArticleDOI
TL;DR: In this paper, an overview of manufacturing and processing of microlattices with corresponding mechanical properties is presented, as well as possible future uses of micro lattices and demonstrated use of cellular materials analogous to applications of micro-attices are also explored.

Journal ArticleDOI
TL;DR: In this article, a Ti3C2 nanomaterial and UHMWPE (ultrahigh molecular weight polyethylene) nanocomposites were prepared, and the morphology, structure and properties of the nanocomposition were investigated.

Journal ArticleDOI
TL;DR: In this article, the authors investigated the effect of the laser beam profile on the defect-free processing of the nickel-based superalloy IN738LC using selective laser melting (SLM).

Journal ArticleDOI
TL;DR: In this article, the performance of selective laser melting (SLM) specimens with relative density of 99.8% was investigated and the microstructures and mechanical properties of the dense SLM specimens fabricated under the optimum laser irradiation conditions were also investigated.

Journal ArticleDOI
TL;DR: In this article, the effects of selective laser melting (SLM) on the microstructure and mechanical properties of A357 aluminium alloys were investigated, where the SLM processing parameters were optimised to achieve maximum density, corresponding to an extremely fine micro structure with very few pores, which translates to differences in mechanical properties compared to conventional cast alloy.

Journal ArticleDOI
TL;DR: In this article, an innovative methodology is presented for formulating geopolymer-based material for the requirements and demands of commercially available powder-based 3D printers, and 3D printed specimens from the geopolymers were assessed for printing accuracy, apparent porosity and mechanical property.

Journal ArticleDOI
TL;DR: In this paper, a superhydrophobic coating (SHPC) on the Al surface was fabricated via a simple and cost effective method using anodization in sulfuric acid electrolyte followed by surface modification with inexpensive myristic acid.

Journal ArticleDOI
TL;DR: In this paper, the impact of thermal post-processing using Hot Isostatic Pressing (HIPping) and/or T6-peak aging treatment, post-process machining, as well as the build orientation on the microstructural and mechanical properties development in AlSi10Mg alloy fabricated using Selective Laser Melting (SLM).

Journal ArticleDOI
TL;DR: In this article, a review of self-healing in cementitious materials is presented, which reveals that not any particular method of selfhealing is the best, but one can be the most suitable for a particular situation.

Journal ArticleDOI
TL;DR: In this article, the authors investigated the effect of surface quality and heat treatment on the fatigue performance of selective laser melting (SLM) AlSi10Mg in load bearing applications.

Journal ArticleDOI
TL;DR: In this paper, the effect of keyhole and conduction on the microstructure and tensile properties of cuboid Ti-6Al-4V samples produced by selective laser melting (SLM) was investigated.

Journal ArticleDOI
TL;DR: In this article, a modified Hummers' method was used to prep graphene oxide (GO) sheets with the negative charge and Al powders were coated by hexadecyl trimethyl ammonium bromide (CTAB) to obtain the surface positive charge.

Journal ArticleDOI
TL;DR: In this paper, the evolution of dynamic recrystallization (DRX) grains and δ phase, as well as the interactions between DRX grains and the phase were investigated.

Journal ArticleDOI
TL;DR: In this paper, the feasibility of joining Inconel 718 with 316L Stainless Steel, and vice versa, by utilizing electron beam melting (EBM) additive manufacturing, a class of powder bed fusion technology.