Energy of internal interfaces as a characteristic of the structural evolution of ultrafine-grained copper and nickel after annealing
作者： P. V. Kuznetsov , T. V. Rakhmatulina , I. V. Belyaeva , A. V. Korznikov
DOI: 10.1134/S0031918X17030115
关键词:
摘要: Scanning tunnel microscopy is used to directly estimate the relative energy of internal interfaces in ultrafine-grained copper after equal-channel angular pressing, followed by rolling. Estimates boundary for as-prepared samples and annealed at different temperatures indicate that ultrafinegrained has nonequilibrium boundaries with higher than coarse-grained copper. The cumulative distribution functions grain–subgrain structure allow qualitative estimation redistribution excess between various types during evolution upon annealing. Differences behaviors nickel produced same technology are revealed. These differences related characteristics formation two metals severe plastic deformation its subsequent annealing, which depend on stacking fault melting point nickel.
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