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 149
... creep process described by Coble26 involves atomic or ionic diffusion along grain boundaries . Setting A 50 ( b / d ) 3 and n = 1 , Eq . 5-16 reduces to the Coble relationship 8669 500Dxbb4 ༤ kTd3 ( 5-19 ) ( Note that Coble creep is ...
... creep process described by Coble26 involves atomic or ionic diffusion along grain boundaries . Setting A 50 ( b / d ) 3 and n = 1 , Eq . 5-16 reduces to the Coble relationship 8669 500Dxbb4 ༤ kTd3 ( 5-19 ) ( Note that Coble creep is ...
Page 151
... Coble creep models are themselves dependent on grain boundary sliding ! From Fig . 5.14 , note that the stress directed diffusion of atoms from compression to tension grain boundaries causes the grain boundaries to separate from one ...
... Coble creep models are themselves dependent on grain boundary sliding ! From Fig . 5.14 , note that the stress directed diffusion of atoms from compression to tension grain boundaries causes the grain boundaries to separate from one ...
Page 160
... Coble creep involves grain boundary diffusion , three diffusion paths are represented on these maps . Sec- ond , a ... creep rate controlling process to shift from low temperature dislocation creep to Coble creep . Furthermore , the ...
... Coble creep involves grain boundary diffusion , three diffusion paths are represented on these maps . Sec- ond , a ... creep rate controlling process to shift from low temperature dislocation creep to Coble creep . Furthermore , the ...
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alloy aluminum alloy American Society applied stress associated ASTM STP atoms behavior brittle Burgers vector Chapter Charpy component crack growth rate crack length crack tip craze crystal crystalline cycles decreasing depends ductility effect elastic embrittlement engineering environment assisted cracking example failure FIGURE flaw fracture mechanics fracture surface fracture toughness given grain boundary hydrogen initial KIEAC lattice load Materials from copyright metallurgical microstructure modulus MPa Vm notch occur orientation parameter plane strain plane stress plastic deformation plastic zone plate polymer properties R. W. Hertzberg region relationship relative Reprinted with permission response result sample screw dislocation Section sensitivity shear stress shown in Fig slip plane slip systems specimen stacking fault energy strain hardening strain rate stress concentration stress intensity factor stress level stress-strain curve striation Table tensile test temperature Testing and Materials texture thickness Trans transition temperature twin values yield strength