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 340
... creep specimen to give the strain due only to creep . This type of creep curve starts at the origin of coordinates . The first stage of creep , known as primary creep , represents a region of decreasing creep rate . Primary creep is a ...
... creep specimen to give the strain due only to creep . This type of creep curve starts at the origin of coordinates . The first stage of creep , known as primary creep , represents a region of decreasing creep rate . Primary creep is a ...
Page 355
... creep rate lower Stress , 1,000 psi 30 25 20 15 10 654 3 2 16-25-6 1200 ° F- 1300 ° F 1400 ° F 1500 ° F 1400 ° F 18-8 1 0.01 0.02 0.03 0.05 0.1 0.2 0.3 0.5 Rate of creep , % / 1,000 hr 1.0 Fig . 13-10 . log - log plot of stress vs. minimum ...
... creep rate lower Stress , 1,000 psi 30 25 20 15 10 654 3 2 16-25-6 1200 ° F- 1300 ° F 1400 ° F 1500 ° F 1400 ° F 18-8 1 0.01 0.02 0.03 0.05 0.1 0.2 0.3 0.5 Rate of creep , % / 1,000 hr 1.0 Fig . 13-10 . log - log plot of stress vs. minimum ...
Contents
Introduction | 5 |
The Torsion Test | 10 |
Stress and Strain Relationships for Elastic Behavior | 17 |
Copyright | |
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alloys aluminum annealing ASTM axis behavior brittle fracture Burgers vector cent compressive considered constant crack decrease determined diameter dislocation line ductile edge dislocation effect elastic elongation equation factor fatigue limit fatigue properties flow curve fracture stress given grain boundaries hardness increase indentation internal friction lattice load martensite material maximum measure Metals Park modulus notch number of cycles occurs orientation particles pile-up plastic deformation principal stresses Proc produced quenched ratio recrystallization reduction of area region residual stresses resolved shear stress screw dislocations shear stress shown shows single crystals slip direction slip lines slip plane slip system Society for Metals solid solution solute atoms specimen stacking fault steel strain energy strain hardening strain rate stress concentration stress-strain curve structure surface tensile strength tensile stress tension theory tion torsion Trans twins vacancies yield point yield strength yield stress