Mechanical Behavior of Materials |
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Page 494
... nucleated for fracture to occur . A number of crack nucleation mechanisms have been suggested ; two are discussed here . Crack nucleation can be caused by dislocation pileups or intersec- tions . In one pileup model ( Fig . 10.26a ) ...
... nucleated for fracture to occur . A number of crack nucleation mechanisms have been suggested ; two are discussed here . Crack nucleation can be caused by dislocation pileups or intersec- tions . In one pileup model ( Fig . 10.26a ) ...
Page 537
... nucleation . If the idea of unaccommodated gbs being responsible for crack nucleation is correct , we can say that " w " cracks form by unaccommodated sliding taking place over a distance comparable to that of a grain edge length . In ...
... nucleation . If the idea of unaccommodated gbs being responsible for crack nucleation is correct , we can say that " w " cracks form by unaccommodated sliding taking place over a distance comparable to that of a grain edge length . In ...
Page 561
... nucleation times . At high , as at low , temperatures , voids often nucleate in the vicin- ity of second - phase particles ; either within grains ( where their growth and coalescence lead to TCF ) or along grain boundaries ( where they ...
... nucleation times . At high , as at low , temperatures , voids often nucleate in the vicin- ity of second - phase particles ; either within grains ( where their growth and coalescence lead to TCF ) or along grain boundaries ( where they ...
Contents
Overview of Mechanical Behavior | 1 |
Toughening Mechanisms and the Physics of Fracture | 10 |
Elastic Behavior | 44 |
Copyright | |
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alloys applied stress behavior bonding brittle Burgers vector ceramics Chap CHAPTER Coble creep composite compression crack growth crack propagation crack tip craze creep fracture creep rate Crystalline Materials cubic curve cyclical decreases discussed dislocation density dislocation line dislocation motion displacement ductile ductile fracture edge dislocation embrittlement energy equation example fatigue fiber Figure flow stress Fracture Mechanics fracture toughness glass grain boundaries hardening high-temperature increases initial length linear elastic loading low temperatures martensite material's matrix microscopic MN/m² modulus nucleation obstacles particle phase plastic deformation plastic flow plastic strain polycrystalline polycrystals polymers precipitation Prob ratio region result Schematic screw dislocation SECTION shear stress shown in Fig single crystal slip direction slip plane slip systems solids solute atom steel strain rate strengthening stress levels stress-strain structure superplastic surface takes place TCRSS tensile axis tensile strength tensile stress tion toughening transition viscoelastic volume fraction work-hardening yield strength