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In the present study the effect of severe plastic deformation by high-pressure torsion in liquid nitrogen on the structure of Cu, Ni and Nb and its thermal stability is analyzed. It is demonstrated that the room-temperature HPT of Cu is accompanied by its dynamic recrystallization. The latter can be suppressed if the deformation temperature is decreased to cryogenic, and the nanocrystalline structure can be obtained, but it degrades at room temperature due to the post-dynamic recrystallization.doi:10.1088/1757-899x/63/1/012096 fatcat:svcotxysj5bnrgztigf3uk4xty