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Role of Deformation Twinning on Strain Hardening in Cubic and Hexagonal Polycrystalline Metals
Author(s) -
Kalidindi S.R.,
Salem A.A.,
Doherty R.D.
Publication year - 2003
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200300320
Subject(s) - materials science , crystal twinning , slip (aerodynamics) , hardening (computing) , crystallite , hexagonal crystal system , softening , alloy , strain hardening exponent , metallurgy , condensed matter physics , deformation mechanism , deformation (meteorology) , composite material , crystallography , microstructure , thermodynamics , physics , chemistry , layer (electronics)
Three effects define deformation‐twinning based metal strengthening: reduction of the free slip distance (Hall‐Petch effect), transformation of glissile to sessile dislocations (Basinski mechanism), and, additionally, textural softening due to reorientation of the material to a favourable orientation for slip. The relative contributions of these mechanisms govern the hardening process and provide a basis for its prediction in alloy design.