This preview shows page 1. Sign up to view the full content.
Unformatted text preview: ogressively decrease
Material strain hardens to support
the applied load.
As further strain hardening
becomes difficult strain rate
Strain rate = Creep rate = dε
dt STAGES OF CREEP
Secondary creep Creep rate is essentially constant
Steady state creep.
Recovery processes involve
highly mobile dislocations counteract strain hardening.
Creep resistance is highest.
Slope of the creep curve in this
stage is referred to as minimum
creep rate. Creep Behavior as a Function of Stress and Temperature CREEP RATE
Temperature increases STAGES OF CREEP
Tertiary creep Creep rate rapidly increases with
View Full Document
- Fall '13