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The precipitate transformation from NiAl-type to Ni2AlMn-type and its influence on the mechanical properties of the Fe–5Ni–1Al−xMn (x = 0, 1, 3, and 5 wt.%) alloys were studied thoroughly through a combination of three-dimensional atom probe tomography (APT), first-principles calculations and mechanical tests. APT reveals the precipitation of NiAl-type nanoparticles in the 0-3Mn alloys and the co-precipitation...
Detailed microstructural analysis of a two-phase alloy of composition Cr-9.8at.% Ta and lying in the Cr-Cr 2 Ta region of the Cr-Ta binary system confirmed that the existing phase diagram is inaccurate; in the cast and annealed condition (1273K/24h), blocky primary Cr 2 Ta precipitates were observed although the phase diagram indicates the eutectic composition to be ~13at.% Ta. The...
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