Preface |
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xi | |
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Chapter 1 Grain Boundary Structures and Defects |
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1 | (46) |
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1.1 Equilibrium structure of grain boundaries |
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1 | (17) |
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1.1.1 Geometric description and elements of bicrystallography |
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2 | (4) |
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1.1.2 Grain boundary structure in terms of intrinsic dislocations |
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6 | (4) |
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1.1.3 Grain boundary atomic structure - structural unit model |
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10 | (5) |
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1.1.4 Energetic atomic description |
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15 | (3) |
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1.2 Crystalline defects of grain boundaries |
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18 | (23) |
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1.2.1 Point defects - intergranular segregation |
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19 | (10) |
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1.2.2 Linear defects: extrinsic dislocations |
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29 | (9) |
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1.2.3 Volume defects - grain boundary precipitation |
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38 | (3) |
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41 | (1) |
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42 | (5) |
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Chapter 2 Elementary Grain Boundary Deformation Mechanisms |
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47 | (62) |
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2.1 Dislocation in close proximity to a grain boundary |
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48 | (1) |
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2.2 Elastic interaction between dislocations and grain boundaries: image force |
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49 | (3) |
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2.3 Short range (or core) interaction between dislocations and grain boundaries |
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52 | (29) |
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2.3.1 Geometric and energetic criteria for slip transmission |
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54 | (3) |
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2.3.2 Elementary mechanisms of dislocations at grain boundaries |
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57 | (7) |
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2.3.3 Atomic scale simulations of interaction mechanisms between dislocations and grain boundaries |
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64 | (5) |
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2.3.4 Experimental observations of interaction mechanisms |
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69 | (8) |
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2.3.5 Elastic stress fields associated with extrinsic dislocations |
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77 | (4) |
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2.4 Relaxation of stress fields associated with extrinsic dislocations |
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81 | (17) |
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2.4.1 Relaxation processes in a grain boundary |
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82 | (2) |
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2.4.2 Evolution of stress fields with relaxation time |
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84 | (2) |
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2.4.3 Experimental studies of grain boundary relaxation phenomena |
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86 | (10) |
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96 | (2) |
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2.5 Relationships between elementary interface mechanisms and mechanical behaviors of materials |
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98 | (4) |
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102 | (7) |
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Chapter 3 Grain Boundaries in Cold Deformation |
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109 | (56) |
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109 | (2) |
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3.2 Plastic compatibility and incompatibility of deformation at grain boundaries |
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111 | (6) |
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111 | (5) |
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3.2.2 Calculation of incompatibilities in a bicrystal |
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116 | (1) |
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3.3 Internal stresses in polycrystal grains |
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117 | (12) |
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3.3.1 Notions of crystalline plasticity, single crystal behavior for use in polycrystalline models |
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118 | (4) |
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3.3.2 Internal stresses in polycrystals |
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122 | (3) |
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3.3.3 Stress relaxation mechanisms |
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125 | (4) |
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3.4 Modeling local mechanical fields using the finite element method (FEM) |
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129 | (10) |
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130 | (1) |
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3.4.2 From single crystal to polycrystal using finite transformations |
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131 | (3) |
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3.4.3 Identification of the constitutive and hardening law parameters |
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134 | (1) |
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3.4.4 Examples of local mechanical fields proposed by the polycrystalline models |
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135 | (4) |
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3.5 Hall-Petch's law, geometrically necessary dislocations |
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139 | (6) |
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139 | (1) |
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3.5.2 Modeling the grain size effect in polycrystals, comparison with experiments |
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140 | (5) |
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3.6 Sub-grain boundaries and grain boundaries in deformation and recrystallization |
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145 | (10) |
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3.6.1 Deformation sub-boundaries and grain boundaries |
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145 | (1) |
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3.6.2 Recrystallization sub-grain boundaries |
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146 | (9) |
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155 | (1) |
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156 | (9) |
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Chapter 4 Creep and High Temperature Plasticity: Grain Boundary Dynamics |
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165 | (52) |
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165 | (3) |
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4.2 Grain boundaries and grain growth |
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168 | (6) |
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4.2.1 Kinetics and grain growth law |
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169 | (2) |
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4.2.2 Grain boundary segregation and precipitation - influence on the boundary mobility |
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171 | (3) |
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4.3 Grain boundaries and creep: mechanisms and phenomenological laws |
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174 | (23) |
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4.3.1 Grain boundary mechanisms |
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175 | (8) |
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4.3.2 Creep models and kinetics |
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183 | (6) |
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4.3.3 Constitutive creep laws and deformation mechanism maps |
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189 | (4) |
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4.3.4 Limit of the models, grain boundaries chemistry and creep |
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193 | (4) |
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4.4 Grain boundaries and superplasticity |
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197 | (11) |
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4.4.1 Phenomenology and microstructural mechanisms |
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197 | (5) |
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4.4.2 The different models |
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202 | (4) |
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4.4.3 Grain growth and superplastic deformation |
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206 | (2) |
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4.5 Prospects: creep of nanograined materials |
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208 | (1) |
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209 | (8) |
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Chapter 5 Intergranular Fatigue |
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217 | (64) |
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217 | (4) |
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5.2 Low temperature intergranular fatigue |
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221 | (31) |
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5.2.1 Several scales to be considered to explain intergranular fatigue |
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221 | (1) |
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5.2.2 Study of α iron and of other BCC metals and metallic alloys |
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222 | (12) |
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5.2.3 Intergranular fatigue of FCC metals and metallic alloys |
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234 | (18) |
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5.3 High temperature fatigue |
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252 | (19) |
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5.3.1 General information |
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252 | (2) |
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5.3.2 Austenitic stainless steels |
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254 | (6) |
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5.3.3 Nickel-based superalloys |
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260 | (11) |
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271 | (1) |
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272 | (1) |
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272 | (9) |
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Chapter 6 Intergranular Segregation and Crystalline Material Fracture |
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281 | (46) |
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6.1 Grain boundaries and fracture |
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282 | (4) |
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6.1.1 Fracture parameters - different types of fracture |
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282 | (3) |
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6.1.2 Intergranular fracture |
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285 | (1) |
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6.2 Intergranular segregation |
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286 | (11) |
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6.2.1 The origin of segregation |
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286 | (1) |
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6.2.2 Thermodynamics of equilibrium segregation - existing models |
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287 | (7) |
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6.2.3 General characteristics of intergranular equilibrium segregation |
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294 | (1) |
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6.2.4 Non-equilibrium segregation |
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295 | (1) |
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6.2.5 Heterogeneity of the intergranular segregation: effects of the grain boundary structure |
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295 | (2) |
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6.3 Segregation and intergranular fracture |
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297 | (11) |
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6.3.1 Intergranular embrittlement mechanisms |
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297 | (5) |
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6.3.2 From embrittling segregations to strengthening segregations |
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302 | (6) |
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6.4 Intergranular fracture induced by liquid metals |
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308 | (12) |
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6.4.1 Phenomena occurring under contact with a liquid metal |
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308 | (1) |
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6.4.2 Liquid metal embrittlement |
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309 | (2) |
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6.4.3 Intergranular penetration |
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311 | (1) |
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6.4.4 Intergranular diffusion in the case of the Cu-Bi system |
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312 | (1) |
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6.4.5 Intergranular wetting in the case of the Ni-Bi system |
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313 | (4) |
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6.4.6 Intergranular penetration mechanism |
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317 | (2) |
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6.4.7 Case of the Al-Ga system |
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319 | (1) |
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320 | (1) |
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320 | (1) |
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321 | (6) |
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327 | (14) |
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Appendix 1 Bicrystallography and Topological Characterization of Interfacial Defects |
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329 | (4) |
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Appendix 2 Appendices of Chapter 3 |
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333 | (8) |
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333 | (1) |
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A2.2 Infinitesimal deformations |
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334 | (1) |
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A2.2.1 Plastic deformation and rotation |
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334 | (1) |
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A2.3 Finished transformations |
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335 | (1) |
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335 | (1) |
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336 | (1) |
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A2.4 Incompatibility in finished transformations |
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337 | (1) |
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A2.5 Calculation of the geometrically necessary dislocation densities |
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338 | (3) |
List of Authors |
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341 | (2) |
Index |
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343 | |