Mechanical Behavior of Materials |
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Page 535
... nucleation problem . As a result , nucleation , which is discussed in the section following , cannot be treated with the same rigor as can void growth . B. Void Nucleation A number of mechanisms has been proposed for creep void / crack ...
... nucleation problem . As a result , nucleation , which is discussed in the section following , cannot be treated with the same rigor as can void growth . B. Void Nucleation A number of mechanisms has been proposed for creep void / crack ...
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 538
... nucleate at some nucleation time ( or , equivalently , some creep nucleation strain ) , and that the nucleation event produces some initial area fraction of voids o ( MN / m2 ) Boundary Inclusion Void ( a ) Void Boundary Inclusion ( b ) ...
... nucleate at some nucleation time ( or , equivalently , some creep nucleation strain ) , and that the nucleation event produces some initial area fraction of voids o ( MN / m2 ) Boundary Inclusion Void ( a ) Void Boundary Inclusion ( b ) ...
Contents
Overview of Mechanical Behavior | 1 |
Toughening Mechanisms and the Physics of Fracture | 10 |
A The Tension Test B StrainRate Sensitivity C Yielding Under | 28 |
Copyright | |
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alloys applied stress behavior bonding brittle Burgers vector ceramics Chap CHAPTER Coble creep composite crack growth crack propagation crack tip creep fracture creep rate Crystalline Materials cubic curve cyclical decreases diffusional 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-temperature martensite material's matrix mechanism map microscopic MN/m² Mode 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 temperature tensile strength tensile stress tion toughening transition viscoelastic volume fraction yield strength