Mechanical Behavior of Materials |
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Page 92
... Burgers vector , b ; b defines the slip direction of the dislocation and is normal to the edge dislocation line . The plane containing both b and the line is parallel to the dislocation slip plane . displacement . The direction of b is ...
... Burgers vector , b ; b defines the slip direction of the dislocation and is normal to the edge dislocation line . The plane containing both b and the line is parallel to the dislocation slip plane . displacement . The direction of b is ...
Page 96
... Burgers vector for a screw , as well as for an edge , dislocation is parallel to the slip direction , and the magnitude of the vector represents the fundamental slip distance . As noted , however , the Burgers vector for a screw ...
... Burgers vector for a screw , as well as for an edge , dislocation is parallel to the slip direction , and the magnitude of the vector represents the fundamental slip distance . As noted , however , the Burgers vector for a screw ...
Page 97
... Burgers vector magnitude is a / 21 / 2 = 2r , where a is the lattice parameter and r is the atomic radius ) . In fcc metals the { 111 } family of planes contains common slip directions . For example the ( 111 ) and ( 111 ) planes have ...
... Burgers vector magnitude is a / 21 / 2 = 2r , where a is the lattice parameter and r is the atomic radius ) . In fcc metals the { 111 } family of planes contains common slip directions . For example the ( 111 ) and ( 111 ) planes have ...
Contents
B Creep Fracture | 37 |
3 | 76 |
Plastic Deformation in Single and Polycrystalline | 137 |
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alloys applied stress behavior bonding brittle fracture Burgers vector Chap Coble creep composite crack growth crack tip craze creep fracture creep rate crystalline cubic curve cyclical decreases diffusion diffusional discussed dislocation density dislocation motion displacement ductile ductile fracture edge dislocation effect embrittlement energy fatigue fiber FIGURE flow stress fracture mechanism fracture mechanism map fracture modes fracture toughness glass grain boundaries greater hardening high-temperature Homologous temperature illustrated in Fig increases initial length linear elastic low temperatures martensite material material's matrix metals microcracks microscopic MN/m² Mode II fracture modulus neck noncrystalline nucleation occurs particle plastic deformation plastic flow polycrystal polymers recrystallization region result schematically shear stress shown in Fig single crystals slip plane slip systems solid steel strain rate stress levels stress-strain stress-strain curve structure superplastic surface takes place tensile strength tensile stress transition values viscoelastic viscosity void growth volume fraction yield strength