Deformation and Fracture Mechanics of Engineering MaterialsUpdated to reflect recent developments in our understanding of deformation and fracture processes in structural materials. This completely revised reference includes new sections on isostress analysis, modulus of rupture, creep fracture micromechanicsms, and many more. |
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Page 175
... flow ) is required , such as in hot - forming processes , fine - grained structures are preferred . Some such materials are known to possess superplastic behavior34 with total strains in excess of 1000 % ( Fig . 5.15 ) . These large ...
... flow ) is required , such as in hot - forming processes , fine - grained structures are preferred . Some such materials are known to possess superplastic behavior34 with total strains in excess of 1000 % ( Fig . 5.15 ) . These large ...
Page 179
... flow Coble creep H Nabarro creep - 10-1 10-2 .6 .7 .8 .9 1.0 00 Homologous temperature ( T / Tm ) ( a ) Temperature ( ° C ) -200 200 400 600 800 Germanium 10 Theoretical shear stress Dislocation glide 103 Dislocation creep 102 101 ...
... flow Coble creep H Nabarro creep - 10-1 10-2 .6 .7 .8 .9 1.0 00 Homologous temperature ( T / Tm ) ( a ) Temperature ( ° C ) -200 200 400 600 800 Germanium 10 Theoretical shear stress Dislocation glide 103 Dislocation creep 102 101 ...
Page 233
... flow ; ( d ) Voigt model for viscoelastic flow ; ( e ) four - element viscoelastic model . of stress σo , no further extension with time , and full strain recovery when the stress is removed . The dashpot ( a piston moving in a cylinder ...
... flow ; ( d ) Voigt model for viscoelastic flow ; ( e ) four - element viscoelastic model . of stress σo , no further extension with time , and full strain recovery when the stress is removed . The dashpot ( a piston moving in a cylinder ...
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addition alloy aluminum alloy applied stress associated ASTM atoms behavior brittle ceramics Chapter Charpy component composite crack extension crack growth crack length crack tip craze creep rate crystal curve cyclic decrease depends determined dislocation ductility elastic embrittlement engineering example factor failure fiber FIGURE flaw fracture mechanics fracture surface fracture toughness given grain boundaries hardening hydrogen increasing initial KIEAC lattice load maraging steels martensite material material's matrix Metals Park microstructure microvoid modulus notch Note occur oriented parameter particles phase plane plane-strain plastic deformation plastic zone plate polymer polymeric region relative Reprinted with permission result rupture sample screw dislocation Section shear stress shown in Fig solid solution specimen stacking fault energy steel alloys strain rate stress concentration stress field stress intensity stress level stress-strain stress-strain curve superalloys tensile stress test temperature thermal thickness toughening Trans transition temperature twinning values yield strength