Mechanical Behavior of Materials |
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Page 281
... creep mechanisms may operate independently or in sequence . Diffusional creep is an example of the former and the resultant creep rate is the sum of the Nabarro - Herring and Coble creep rates ; i.e. , EDIFF = & NH + & c ( 7.18 ) Since ...
... creep mechanisms may operate independently or in sequence . Diffusional creep is an example of the former and the resultant creep rate is the sum of the Nabarro - Herring and Coble creep rates ; i.e. , EDIFF = & NH + & c ( 7.18 ) Since ...
Page 282
... creep processes , the overall creep rate is determined by the greatest of the individual creep rates . This concept can be illustrated further by considering the variation of creep rate with stress at temperatures at which both ...
... creep processes , the overall creep rate is determined by the greatest of the individual creep rates . This concept can be illustrated further by considering the variation of creep rate with stress at temperatures at which both ...
Page 318
... creep is frequently the design limiting factor for many high - temperature structural applications . Upon application of a fixed load or stress , transient creep , characterized by a decreasing creep rate , is first observed . After a ...
... creep is frequently the design limiting factor for many high - temperature structural applications . Upon application of a fixed load or stress , transient creep , characterized by a decreasing creep rate , is first observed . After a ...
Contents
Yielding Under Multiaxial Loading Conditions | 17 |
F The Torsion Test | 32 |
2 | 42 |
Copyright | |
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alloys applied stress behavior brittle fracture Burgers vector ceramics Chap Coble creep composite crack growth crack tip craze creep fracture creep rate crystalline cubic 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 modes fracture toughness glass grain boundaries greater hardening high-temperature illustrated in Fig increases initial interaction length linear elastic low temperatures martensite material material's matrix metals microscopic MN/m² Mode II fracture modulus nucleation obstacles occurs particle phase plastic deformation plastic flow plastic strain polycrystal polymers precipitation processes region result schematically screw dislocation shear stress shown in Fig single crystals slip plane slip systems solid solute atom Stage steel strain rate strengthening stress levels stress-strain curve structure superplastic surface takes place TCRSS tensile axis tensile strength tensile stress transition values void growth volume fraction yield strength