Deformation and Fracture Mechanics of Engineering MaterialsUpdated to reflect recent developments in our understanding of deformation and fracture processes in structural materials. This completely revised reference includes new sections on isostress analysis, modulus of rupture, creep fracture micromechanicsms, and many more. |
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Page 45
... are highly directional ( as in the case of covalent , ionic , and W Wide W Narrow FIGURE 2.5 Characteristic width of an ELEMENTS OF DISLOCATION THEORY / 45 Lattice Resistance to Dislocation Movement The Peierls Stress.
... are highly directional ( as in the case of covalent , ionic , and W Wide W Narrow FIGURE 2.5 Characteristic width of an ELEMENTS OF DISLOCATION THEORY / 45 Lattice Resistance to Dislocation Movement The Peierls Stress.
Page 46
... Peierls stress correspondingly large . Although several attempts have been made to compute precisely the magnitude of the Peierls stress in a given lattice , consider- able difficulties arise because the exact shape of the force ...
... Peierls stress correspondingly large . Although several attempts have been made to compute precisely the magnitude of the Peierls stress in a given lattice , consider- able difficulties arise because the exact shape of the force ...
Page 47
... Peierls Stress Metal FCC Metal BCC wide narrow very small moderate negligible strong Ceramic ionic narrow large strong Ceramic covalent very narrow very large strong at low and moderate temperatures . However , the Peierls stress ...
... Peierls Stress Metal FCC Metal BCC wide narrow very small moderate negligible strong Ceramic ionic narrow large strong Ceramic covalent very narrow very large strong at low and moderate temperatures . However , the Peierls stress ...
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alloy aluminum alloy American Society applied stress associated ASTM STP atoms behavior brittle Burgers vector Chapter Charpy component crack growth rate crack length crack tip craze crystal crystalline cycles decreasing defined depends ductility effect elastic embrittlement engineering environment assisted cracking example failure FIGURE flaw fracture mechanics fracture surface fracture toughness given grain boundary hydrogen initial KIEAC lattice load Materials from copyright metallurgical microstructure modulus MPa Vm notch occur orientation parameter plane strain plane stress plastic deformation plastic zone plate polymer properties R. W. Hertzberg region relationship relative Reprinted with permission response result sample screw dislocation Section sensitivity shear stress shown in Fig slip plane slip systems specimen stacking fault energy strain hardening strain rate stress concentration stress intensity factor stress level stress-strain curve striation Table test temperature Testing and Materials texture thickness Trans transition temperature twin values yield strength