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 377
George Dieter. σα Omax στη Tomin Cycles ( a ) Cycles ( 6 ) پیلان Stress Cycles - ( c ) Figure 12-2 Typical fatigue stress cycles . ( a ) Reversed stress ; ( b ) repeated stress ; ( c ) irregular or random stress cycle . sinusoidal form ...
George Dieter. σα Omax στη Tomin Cycles ( a ) Cycles ( 6 ) پیلان Stress Cycles - ( c ) Figure 12-2 Typical fatigue stress cycles . ( a ) Reversed stress ; ( b ) repeated stress ; ( c ) irregular or random stress cycle . sinusoidal form ...
Page 379
... cycles without failure . Most nonferrous metals , like aluminum , magnesium , and copper alloys , have an S - N curve which slopes gradually downward with increasing number of cycles . These materials do not have a true fatigue limit ...
... cycles without failure . Most nonferrous metals , like aluminum , magnesium , and copper alloys , have an S - N curve which slopes gradually downward with increasing number of cycles . These materials do not have a true fatigue limit ...
Page 414
... cycles below the fatigue limit and the stress is increased in small increments after allowing a large number of cycles to occur at each stress level , it is found that the resulting fatigue limit may be as much as 50 percent greater ...
... cycles below the fatigue limit and the stress is increased in small increments after allowing a large number of cycles to occur at each stress level , it is found that the resulting fatigue limit may be as much as 50 percent greater ...
Contents
Introduction | 3 |
Stress and Strain Relationships for Elastic Behavior | 18 |
Metallurgical Fundamentals | 101 |
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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