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The interdiffusivity of Al and the transition metal solutes Ti, V, Cr, Mn, Fe, Nb, Mo, Ru, Ta, W, and Re in fcc Co is characterized at 1373 K, 1473 K and 1573 K by binary diffusion couples. The experimental results are complemented by first-principles calculations in combination with kinetic Monte Carlo simulations to investigate the diffusion of Re, W, Mo and Ta in fcc Co. The interdiffusion coefficients...
The indentation size effect observed during indentation testing is studied in pure Ni, Fe and two different Ni–Fe alloys as well as in a Ni–Fe diffusion couple. The hardness as a function of depth in these solid solutions is modeled in terms of geometrically necessary dislocations (GND). It is found that, for indentation depths varying from 50 to 5000nm, the depth dependence of hardness could be modeled...
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