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 72
... stress - strain curve on unloading from a plastic strain will not be exactly linear and parallel to the elastic ... yield stress in one direction , e.g. , in tension , and then after unloading to zero stress it is reloaded in the ...
... stress - strain curve on unloading from a plastic strain will not be exactly linear and parallel to the elastic ... yield stress in one direction , e.g. , in tension , and then after unloading to zero stress it is reloaded in the ...
Page 82
... YIELD LOCUS For a biaxial plane - stress condition ( σ2 expressed mathematically as = 0 ) the von Mises ' yield criterion can be 022 + 032 - 0103 = o2 ( 3-27 ) This is the equation of an ellipse whose major semiaxis is √20 , and whose ...
... YIELD LOCUS For a biaxial plane - stress condition ( σ2 expressed mathematically as = 0 ) the von Mises ' yield criterion can be 022 + 032 - 0103 = o2 ( 3-27 ) This is the equation of an ellipse whose major semiaxis is √20 , and whose ...
Page 199
... yield point can be roughly twice the lower yield point . However , it is more usual to obtain an upper yield point 10 to 20 percent greater than the lower yield point . The onset of general yielding occurs at a stress where the average ...
... yield point can be roughly twice the lower yield point . However , it is more usual to obtain an upper yield point 10 to 20 percent greater than the lower yield point . The onset of general yielding occurs at a stress where the average ...
Contents
Introduction | 3 |
Stress and Strain Relationships for Elastic Behavior | 18 |
Metallurgical Fundamentals | 101 |
Copyright | |
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alloy aluminum angle annealed ASTM atoms axis behavior billet brittle fracture Burgers vector cold-worked components compression constant crack creep cycles decrease determined diameter direction dislocation line ductile edge dislocation elastic elongation embrittlement energy engineering equation extrusion factor failure fatigue limit fibers Figure flow curve flow stress force forging friction given grain boundaries hot-working hydrostatic increase indentation lattice length load machining martensite material matrix maximum measured mechanical metallurgical Metals Park modulus necking notch occurs particles percent plane-strain plastic deformation plastic strain pressure produce properties ratio recrystallization reduction region residual stresses rolling screw dislocation shear stress sheet shown in Fig slip plane slip systems Society for Metals specimen steel strain hardening strain rate stress-strain curve structure surface temperature tensile strength tensile stress tension test tensor thickness tool torsion Trans usually velocity workpiece yield strength yield stress