Fabrication and characterization of aluminum matrix composites containing different volume fractions of Ni3Al powder (5-40 Vol%) were investigated. Ni3Al powder was produced by mechanical alloying of elemental nickel and aluminum powder mixture. Al-Ni3Al composite parts were prepared using a powder metallurgy route involving two stages Al and Ni3Al powder mixtures were first compacted under 500...

Intermetallic Ni3Al – based alloys belong to a group of advanced materials characterized by good chemical and physical properties (such as structural stability, corrosion resistance) which offer advenced technological applications. The paper presents the study of catalytic properties of Ni3Al foils (thickness approximately 50 μm) in the methanol and hexane decomposition. The egzamined material ...

A new embedded-atom potential has been developed for Ni3Al by fitting to experimental and first-principles data. The potential describes lattice properties of Ni3Al, point defects, planar faults, as well as the c and c0 fields on the Ni–Al phase diagram. The potential is applied to calculate the energies of coherent Ni/Ni3Al interphase boundaries with three different crystallographic orientatio...

Fabrication and characterization of aluminum matrix composites containing different volume fractions of Ni3Al powder (5-40 Vol%) were investigated. Ni3Al powder was produced by mechanical alloying of elemental nickel and aluminum powder mixture. Al-Ni3Al composite parts were prepared using a powder metallurgy route involving two stages Al and Ni3Al powder mixtures were first compacted under 500...

This work investigates the charge transfer and A1 (Ga) p-Ni d hybridization effects in the intermetallic Ni3Al (Ni3Ga) alloy using the Ni L3~and K-edge and Al (Ga) K x-ray absorption near edge structure (XANES) measurements. We find that the intensity of white-line features at the Ni L3~-edge in the Ni3Al (Ni3Ga) alloy decreased in comparison with that of pure Ni, which can be attributed to the...

The temperature dependencies of the c(f.c.c.)Ni/c-Ni3Al(L12) interfacial free energy for the {100}, {110}, and {111} interfaces are calculated using firstprinciples calculations, including both coherency strain energy and phonon vibrational entropy. Calculations performed including ferromagnetic effects predict that the {100}-type interface has the smallest free energy at different elevated tem...

Citation: Salerno M, Stępniowski WJ, Cieślak G, Norek M, MichalskaDomańska M, Karczewski K, Chilimoniuk P, Polkowski W, Jóźwik P and Bojar Z (2016) Advanced Image Analysis of the Surface Pattern Emerging in Ni3Al Intermetallic Alloys on Anodization. Front. Mater. 3:34. doi: 10.3389/fmats.2016.00034 advanced image analysis of the surface Pattern emerging in ni3al intermetallic alloys on anodization

In this research, formation of nanocrystalline Ni3Al intermetallic from Ni and Al elemental powders by mechanical alloying (MA) process and its characterization was investigated. Therefore, the evolutions in microstructure such as phase transformation, oxidation in air and introduction of Fe impurity from milling media after MA were evaluated using XRD, Rietveld refinement, TEM, SEM, EDS and IC...

We report the results of several experiments isolating the effect of long-range order on mechanical properties of intermetallic compounds. Kinetically disordered FCC Ni3Al (Ni 76%) thin films were produced by rapid solidification following pulsed laser melting. For comparison, compositionally and microstructurally identical films with ordered L12 structure were produced by subsequent annealing ...