Investigation on Intermetallic Nickel Aluminides (Ni3Al) was carried to determine the suitability of this material to replace the existing automotive body. The purpose is to produce vehicles which are lighter, more fuel efficient and cause less pollution. One key technical design strategy for improving vehicles efficiency is the light weighting. Attractive properties of Ni3Al including low dens...

The thermodynamic properties of Al, Ni, NiAl, and Ni3Al were studied using the first-principles approach. The 0-K total energies are calculated using the ab initio plane wave pseudopotential method within the generalized gradient approximation. The contribution to the free energy from the lattice vibration was calculated using the phonon densities of states derived by means of the ab initio lin...

The compressive creep deforrn;~tiort microstructure of polycrystalline Ni3AI h:is been observed by transnlission electron microscopy (TEM). ( 1 1 I ) rind ( 110) slip systems have been identified in primary creep. Dissociatiort of edge superparti:~l pairs perpendicular to the slip plane (both { 11 1 ) and ( 110) ) is common in crept specimens. I'he formation of this superdislocation...

First-principles total-energy electronic structure calculations based on the full-potential linear-muffin-tinorbital method have been used to study the electronic and mechanical properties of the L12-type ordered nickel-based intermetallics Ni3X ~X5Mn, Al, Ga, Si, Ge!. The calculated values for the equilibrium volume and elastic properties are generally in good agreement with experiments. The l...

Related Articles Size-dependent transition of deformation mechanism, and nonlinear elasticity in Ni3Al nanowires Appl. Phys. Lett. 102, 041902 (2013) Local magnetization profile and geometry magnetization effects in microwires as determined by magneto-optical Kerr effect J. Appl. Phys. 113, 043904 (2013) Streak spectroscopy and velocimetry of electrically exploded Ni/Al laminates J. Appl. Phys....

A new method is proposed for estimating the enthalpies of formation of L12 (fcc-ordered) intermetallics from the heat release measured during ordering of their disordered polymorphs. The method is applied to Cu3Au, Ni3Al, and Ni3Si. The resulting estimates of enthalpies of formation are close to values obtained by high temperature dissolution calorimetry. They also appear to be more precise tha...

In order to provide effective solid lubrication Ni3Al coating, 10 wt.% Ag and different amounts of MoO3 lubricant were mechanically mixed with the SHSed powder sprayed HVOF. Microstructure, mechanical properties, tribological behavior from 25 °C 800 coatings studied, basic wear mechanisms explored discussed as well. Results show that hardness adhesive bonding strength are slightly decreased, wh...