简介：Thermalstabilityandstrainratesensitivityofultrafine-grained(UFG)Feproducedbysevereplasticdeformation(SPD)wereinvestigated.TheUFGFewasprocessedbyequal-channelangularpressing(ECAP)viarouteBc.After6passes,thegrainsizeofUFGFereaches600nm,asconfirmedbymeansofelectronbackscatterdiffraction(EBSD).Examinationofmicro-hardnessandgrainsizeofUFGFeasafunctionofpost-ECAPannealingtemperatureshowsatransitionfromrecoverytorecrystallization.Thecriticaltrans...
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