Mechanical Behavior of Materials |
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Page 96
... dislocation , the Burgers vector is normal to the dislocation line and the two directions define the slip plane . Thus , the slip plane contains both b and the dislocation line or , alternatively , the vector cross - product of ɓ and a ...
... dislocation , the Burgers vector is normal to the dislocation line and the two directions define the slip plane . Thus , the slip plane contains both b and the dislocation line or , alternatively , the vector cross - product of ɓ and a ...
Page 97
Thomas H. Courtney. SCREW AND MIXED DISLOCATIONS A. Slip by Screw Dislocation Motion A screw dislocation is another type of line defect the motion of which causes plas- tic flow in crystals . The atomic arrangements in the vicinity of a ...
Thomas H. Courtney. SCREW AND MIXED DISLOCATIONS A. Slip by Screw Dislocation Motion A screw dislocation is another type of line defect the motion of which causes plas- tic flow in crystals . The atomic arrangements in the vicinity of a ...
Page 100
... dislocation line Figure 3.15 Schematic of a screw dislocation cross - slipping in a fcc lattice . The dislocation line ( with b = a / 2 [ 101 ] ) originally is moving on a ( 111 ) plane when it encounters an obsta- cle along the line XX ...
... dislocation line Figure 3.15 Schematic of a screw dislocation cross - slipping in a fcc lattice . The dislocation line ( with b = a / 2 [ 101 ] ) originally is moving on a ( 111 ) plane when it encounters an obsta- cle along the line XX ...
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