Showing papers in "Materialia in 2018"

TL;DR: In this paper, the chemical composition and corrosion response of the passive oxide film formed on the AM 316L stainless steel in acidic regime (pH ≥ 3) and its comparison to wrought counterpart, by applying X-ray photoelectron spectroscopy (XPS) and electrochemical analysis, respectively.

TL;DR: In this paper, the authors employed total scattering technique to study the local structure of the face-centered cubic (fcc) equiatomic FeCoNiCr MEA, and FeCoNCrMn and FeCNiCrPd HEAs before and after ion irradiation.

TL;DR: In this article, a solid-solution MXene (Ti0.5V 0.5)3C2 is successfully synthesized by exfoliating a solid solution MAX phase (i.e., 3AlC2), and its catalytic effect on the hydrogen storage reaction of Mg is systemically evaluated for the first time.

TL;DR: The structure of the electrospun collagen fibers was analyzed and compared with the structure of native collagen, gelatin, and electro-spun gelatin in this article, and the results showed axial periodicity was not present in the fibers.

TL;DR: In this article, an integrated experimental and molecular dynamics approach was used for developing low-activation high entropy alloys, potentially attractive for next generation nuclear reactor applications, which were based on the concept of high entropy phase formation from a palette of elements with intrinsic low activity, namely Ta-Ti-V-Zr-X (X = Hf or W), with constituents in equimolar proportions.

TL;DR: In this paper, several combinations of deposition parameters were considered in an effort to obtain fully dense additively manufactured tantalum produced on an EOSINT M280 DMLS system.

TL;DR: In this article, a 3D large-scale phase-field simulation with the GPU supercomputer TSUBAME2.5 at the Tokyo Institute of Technology was performed to investigate competitive grain growth during the directional solidification of a polycrystalline binary alloy.

TL;DR: In this paper, the grain coarsening after solidification with higher cooling rate in some specific aluminium alloys was observed using a V-shape cooper mold, and the results can be well explained in terms of the interdependency theory for grain refinement of cast metals.

TL;DR: In this paper, the authors report evidence of Re and Mo segregation along with Cr and Co to the dislocations inside of γ' precipitates in a second generation Ni-based single crystal superalloy, after creep deformation at 750 °C under an applied stress of 800

TL;DR: In this paper, the formation and self-organization mechanism of void superlattices in metals and alloys under irradiation through phase field modeling and simulations is investigated, and three different formation mechanisms are clearly distinguished according to their thermodynamic origin and reaction kinetics.

TL;DR: In this article, the effect of cold-rolling on the microstructural evolution, texture development and mechanical properties of an equiatomic FeCrCuMnNi dual phase high entropy alloy (HEA) was investigated.

TL;DR: In this paper, multi-walled carbon nanotubes (MWCNTs) were fabricated by powder metallurgy and the graphitization of MWCNTs and its strengthening efficiency in fabricated TMCs were quantitatively characterized.

TL;DR: In this article, the effects of laser scanning strategy (single melt vs. checker board styles), post-SLM heat treatment, and corroding surface orientation (with respect to the scan and build directions) on the corrosion behavior were examined.

TL;DR: In this article, a single-phase Al0.1CoCrFeNi high-entropy alloy (HEA) with face-centered cubic structure was subjected to cryo-rolling at the liquid N2 temperature and subsequent annealing.

TL;DR: In this article, a composite of pyrochlore and fluorite is formed in LZC/YSZ DCL TBCs by electron beam-physical vapor deposition (EB-PVD).

TL;DR: In this paper, the fatigue behavior of a refractory body centred cubic (BCC) high-entropy alloys (HEAs) was investigated under four-point bending loading conditions.

TL;DR: In this article, the authors investigated the mechanical properties of crystalline and amorphous aluminium nitride (a-AlN) under different loading modes and showed that the failure mechanisms are very different in both crystalline AlN and polysilicon AlN.

TL;DR: Freeze-casting, also called ice-templating, is a promising method to produce hierarchically porous ceramics with aligned and directional pores as discussed by the authors. But this method offers strict control over the pore sizes, the percentage of porosity and morphology evolution.

TL;DR: In this article, the corrosion and microstructure of the Al-Cu-Li alloy AA2050 were investigated as a function of artificial ageing and the influence of T1 (Al2CuLi) precipitates on the observed behaviour.

TL;DR: In this article, a nanocomposite approach was proposed for enhancing the thermoelectric figure-of-merit (ZT) in Hf-free half-Heusler (HH) alloys.

TL;DR: In this paper, it was shown that the sensitivity of the luminescence lifetime to temperature changes can be estimated by using information on the energy structure of materials, and that within tungstates and molybdates under study SrWO4 is the most promising material for application in luminance lifetime cryothermometry.

TL;DR: In this article, the local in-plane atomic configuration around Zn in the 10H type long period stacking ordered Mg75Zn10Y15 alloy was investigated using X-ray fluorescence holography.

TL;DR: In this paper, the volume diffusion of Cr in Ni and in Ni-22Cr (at. %) was studied from tracer experiments, using 52 Cr and 54 Cr as tracers, in the temperature range 542-843°C.

TL;DR: In this article, the effect of retained austenite (RA) on the micropitting behavior of carburized AISI 8620 steel under boundary lubrication condition was investigated.

TL;DR: In this article, the formation of amorphous phase in the upper surface of stir zone (SZ) was attributed to mechanically driven amorphization caused by dislocation gliding plastic deformation and elements mixing process.

TL;DR: In this paper, a two-dimensional cellular automaton-finite difference (CA-FDM) model is proposed for the simulation of hydrogen porosity formation during solidification of dendrites and irregular eutectics in aluminum alloys.

TL;DR: In this paper, a facile in situ HAP coating on cellulose nanocrystals (CNCs) matrix followed by a crosslinking reaction was developed by changing the amount of CNCs added to simulated body fluid (SBF).

TL;DR: In this article, a series of ceramics of (Y1-xDyx)TaO4 monoclinic phases (space group: I2 (5)) are prepared by the solid-state reaction method.

TL;DR: In this article, a microstructure-based guideline for designing an optimal heat treatment scheme has been proposed to evaluate the tribo response of the coating as a function of coating's microstructures.

TL;DR: A dilute Al-002Yb-001Er-003Sc-003Zr (at%) alloy was aged to create a high number density of Al3(Sc056Yb014Er010Zr020) nanoprecipitates, with 35nm radius, an Yb and Er-enriched core and Sc- and Zr-ensriched shells, as measured via atom-probe tomography.