Mechanical Metallurgy |
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Page 338
... creep rate decreases with time , then reaches essentially a steady state in which the creep rate changes little with time , and finally the creep rate increases rapidly with time until fracture occurs . Thus , it is natural to discuss the ...
... creep rate decreases with time , then reaches essentially a steady state in which the creep rate changes little with time , and finally the creep rate increases rapidly with time until fracture occurs . Thus , it is natural to discuss the ...
Page 348
... creep process . High - temperature creep is predominantly steady - state or viscous oreep , while below Tm / 2 transient , or primary . creep ... creep rate during transient creep 348 [ Chap . 13 Applications to Materials Testing.
... creep process . High - temperature creep is predominantly steady - state or viscous oreep , while below Tm / 2 transient , or primary . creep ... creep rate during transient creep 348 [ Chap . 13 Applications to Materials Testing.
Page 355
... creep rate lower 30 25 ៩៨៩ 20 15 Stress , 1,000 psi ܣ ܘ 654 3 2 16-25-6 1200 ° F- 1300 ° F 1400 ° F 1500 ° F 1400 ° F 18-8 0.01 0.02 0.03 0.05 0.1 0.2 Rate of creep , % / 1,000 hr 0.3 0.5 1.0 Fig . 13-10 . log - log plot of stress ...
... creep rate lower 30 25 ៩៨៩ 20 15 Stress , 1,000 psi ܣ ܘ 654 3 2 16-25-6 1200 ° F- 1300 ° F 1400 ° F 1500 ° F 1400 ° F 18-8 0.01 0.02 0.03 0.05 0.1 0.2 Rate of creep , % / 1,000 hr 0.3 0.5 1.0 Fig . 13-10 . log - log plot of stress ...
Contents
Introduction 3 35678OORE | 3 |
Stress and Strain Relationships for Elastic Behavior | 17 |
Elements of the Theory of Plasticity | 54 |
Copyright | |
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alloys aluminum angle annealed ASTM axis behavior bending billet brittle fracture Burgers vector cent compressive constant crack creep rate decrease determined diameter direction dislocation line distribution drawing ductile edge dislocation effect elastic elongation equation extrusion factor failure fatigue limit flow curve flow stress force forging forming friction given grain boundaries hardness high-temperature increase indentation lattice length load longitudinal mandrel martensite material maximum measured mechanical metallurgical Metals Park method modulus notch obtained occurs orientation particles plastic deformation pressure principal stresses Proc produced properties punch quenched radius ratio reduction of area region relationship residual stresses rolling screw dislocations shear stress sheet shows single crystals slip plane Society for Metals specimen steel strain energy strain hardening strain rate stress-strain curve structure surface temper tensile strength tensile stress theory thickness tion torsion Trans transition temperature tube yield strength yield stress στ