Mechanical MetallurgyThis bestselling metallurgy text examines the behaviour of materials under stress and their reaction to a variety of hostile environments. It covers the entire scope of mechanical metallurgy, from an understanding of the continuum description of stress and strain, through crystalline and defect mechanisms of flow and fracture, and on to a consideration of major mechanical property tests and the basic metalworking process. It has been updated throughout, and optimised for metric (SI) units . End-of-chapter study questions are included. |
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Page 71
... 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 81
... YIELD LOCUS For a biaxial plane - stress condition ( σ2 = 0 ) the von Mises ' yield criterion can be expressed mathematically as 02 + 032-0103 = σ ( 3-27 ) This is the equation of an ellipse whose major semiaxis is √2σ and whose minor ...
... YIELD LOCUS For a biaxial plane - stress condition ( σ2 = 0 ) the von Mises ' yield criterion can be expressed mathematically as 02 + 032-0103 = σ ( 3-27 ) This is the equation of an ellipse whose major semiaxis is √2σ and whose minor ...
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 | 17 |
Metallurgical Fundamentals | 101 |
Copyright | |
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alloy aluminum angle annealed ASME 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 tensor thickness tool torsion Trans usually velocity workpiece yield strength yield stress York