Mechanical MetallurgyI Mechanical Fundamentals 1 Introduction 2 Stress and Strain Relationships for Elastic Behavior 3 Elements of the Theory of Plasticity II Metallurgical Fundamentals 4 Plastic Deformation of Single Crystals 5 Dislocation Theory 6 Strengthening Mechanisms 7 Fracture III Applications to Materials Testing 8 The Tension Test 9 The Hardness Test 10 The Torsion Test 11 Fracture Mechanics 12 Fatigue of Metals 13 Creep and Stress Rupture 14 Brittle Fracture and Impact Testing IV Plastic Forming of Metals 15 Fundamentals of Metalworking 16 Forging 17 Rolling of Metals 18 Extrusion 19 Drawing of Rods, Wires and Tubes 20 Sheet-Metal Forming 21 Maching of Metals Appendixes |
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Page 185
... GRAIN BOUNDARIES AND DEFORMATION The boundaries between grains in a polycrystalline aggregate are a region of disturbed lattice only a few atomic diameters wide . In the general case , the crystallographic orientation changes abruptly ...
... GRAIN BOUNDARIES AND DEFORMATION The boundaries between grains in a polycrystalline aggregate are a region of disturbed lattice only a few atomic diameters wide . In the general case , the crystallographic orientation changes abruptly ...
Page 188
... grains again fit together . The reassembled polycrystal is shown in Fig . 6-2d . At temperatures above about one - half of the melting point , deformation can occur by sliding along the grain boundaries . Grain - boundary sliding ...
... grains again fit together . The reassembled polycrystal is shown in Fig . 6-2d . At temperatures above about one - half of the melting point , deformation can occur by sliding along the grain boundaries . Grain - boundary sliding ...
Page 453
... grain boundaries should be high - angle boundaries to promote sliding . Moreover , the grain boundaries should be mobile to prevent the formation of local stress concentrations . In superplastic deformation the grains remain essentially ...
... grain boundaries should be high - angle boundaries to promote sliding . Moreover , the grain boundaries should be mobile to prevent the formation of local stress concentrations . In superplastic deformation the grains remain essentially ...
Contents
Introduction | 3 |
Stress and Strain Relationships for Elastic Behavior | 18 |
Applications to Materials Testing | 273 |
Copyright | |
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alloys aluminum American Society annealed ASME ASTM atoms behavior brittle fracture Burgers vector cold-worked components compression constant creep rate criterion crystal decrease determined diameter direction ductile effect elastic elongation embrittlement energy engineering equation extrusion factor failure fatigue limit Figure flow stress force forging fracture mechanics friction given grain boundaries hardness high-temperature hot-working hydrostatic increases indentation lattice machine martensite material maximum measured metallurgical Metals Park metalworking modulus necking normal notch occurs particles percent plane-strain plastic deformation plastic strain pressure produced propagation properties ratio recrystallization reduction of area region residual stresses screw dislocation shear stress sheet shown in Fig slip plane Society for Metals specimen steel strain hardening strain rate stress-strain curve structure surface tensile strength tensile stress tension test thickness tion torsion Trans transition temperature true strain usually velocity workpiece yield strength yield stress York Δε