Features of Work Hardening of Polycrystals with Nanograins

Eduard Kozlov; Nina Koneva; L.I. Trishkina; A.N. Zhdanov; M.V. Fedorischeva

doi:10.4028/www.scientific.net/MSF.584-586.35

Paper Titles

R&D of NanoSPD Materials in Ufa via International Cooperation
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Advantages and Limitations of HPT: A Review
p.16

On Grain Boundary Engineering of UFG Metals and Alloys for Enhancing their Properties
p.22

Analysis of the Fundamental Mechanisms and Efficiency of the Deformation Methods of Nanostructuring
p.29

Features of Work Hardening of Polycrystals with Nanograins
p.35

Nanoglasses: A Way to Solid Materials with Tunable Atomic Structures and Properties
p.41

Nanostructured SPD Processed Titanium for Medical Implants
p.49

Outstanding Mechanical Properties in the Materials with a Nano / Meso Hybrid Microstructure
p.55

Evaluation of Reshaping Methods for Multi-Pass Equal Channel Angular Extrusion
p.63

HomeMaterials Science ForumMaterials Science Forum Vols. 584-586Features of Work Hardening of Polycrystals with...

Features of Work Hardening of Polycrystals with Nanograins

Abstract:

The present work is devoted to the investigation of the influence of the grain size on the main mechanical characteristics of nanopolycrystals of different metals. The Hall-Petch parameter behaviour for Al, Cu, Ni, Ti and Fe was examined in the wide grain size interval. The stages of plastic deformation and the parameters of work hardening for nanocrystalline copper were analysed in detail. The deformation mechanisms and critical grain sizes accounting for the transition from the dislocation slip to the grain boundary sliding were described.