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 164
George Ellwood Dieter D. J. Bacon. 5-8 FORCES ON DISLOCATIONS When an external force of sufficient magnitude is applied to a crystal , the dislocations move and produce slip . Thus , there is a force acting on a dislocation line which ...
George Ellwood Dieter D. J. Bacon. 5-8 FORCES ON DISLOCATIONS When an external force of sufficient magnitude is applied to a crystal , the dislocations move and produce slip . Thus , there is a force acting on a dislocation line which ...
Page 166
... force between two parallel screw dislocations . Since the stress field of a screw dislocation is radially symmetrical , the force between the dislocations is a radial force which depends only on the distance of separation r . Gb2 F = Te ...
... force between two parallel screw dislocations . Since the stress field of a screw dislocation is radially symmetrical , the force between the dislocations is a radial force which depends only on the distance of separation r . Gb2 F = Te ...
Page 594
... forces act on the metal . These are a radial force P , and a tangential friction force F. Between the entrance plane and the neutral point the sheet is moving slower than the roll surface , and the frictional force acts in the direction ...
... forces act on the metal . These are a radial force P , and a tangential friction force F. Between the entrance plane and the neutral point the sheet is moving slower than the roll surface , and the frictional force acts in the direction ...
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