Strain Hardening Behavior of Ultrafine- Grained Cu by Analyzing the Tensile Stress-Strain Curve

UFG Cu was found to experience two stages of strain hardening processes under uniaxial tensile stress, which was similar to the Stage IV and V of CG Cu after large plastic deformation. The storage of dislocations in small grains and dynamic recovery caused by annihilation of dislocations and GB‐medi...

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Veröffentlicht in:Advanced engineering materials 2008-05, Vol.10 (5), p.434-438
Hauptverfasser: Huang, C.-X., Wu, S.-D., Li, S.-X., Zhang, Z.-F.
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container_title Advanced engineering materials
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creator Huang, C.-X.
Wu, S.-D.
Li, S.-X.
Zhang, Z.-F.
description UFG Cu was found to experience two stages of strain hardening processes under uniaxial tensile stress, which was similar to the Stage IV and V of CG Cu after large plastic deformation. The storage of dislocations in small grains and dynamic recovery caused by annihilation of dislocations and GB‐mediated processes were responsible for the different stages of strain hardening behavior. Improvement of strain hardening capability for UFG metals should be based on the mechanisms of strain hardening.
doi_str_mv 10.1002/adem.200700324
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subjects Cast iron
Cold working, work hardening
annealing, quenching, tempering, recovery, and recrystallization
textures
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Deformation and plasticity (including yield, ductility, and superplasticity)
Exact sciences and technology
Fatigue
Graphite
Materials science
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
Treatment of materials and its effects on microstructure and properties
title Strain Hardening Behavior of Ultrafine- Grained Cu by Analyzing the Tensile Stress-Strain Curve
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