A Physical Model of Cyclic Creep Deformation in terms of the Effective Stress
作者： Soo Woo Nam , Walter L. Bradley
DOI: 10.1016/B978-0-08-034912-1.50135-1
关键词: Effective stress 、 Diffusion creep 、 Composite material 、 Stress (mechanics) 、 Structural engineering 、 Deformation mechanism 、 Deformation (mechanics) 、 Materials science 、 Creep 、 Stress relaxation 、 Cyclic stress
摘要: ABSTRACT The cyclic creep deformation mechanism of Al + 4.6%Mg alloy at the temperature range 0.4–0.6Tm is investigated in terms effective stress. peak stress applied for tests varied from 48 to 180 MPa. It observed that increasing with and test temperature. For static creep, constant during secondary state, on other hand, cyclic, it varying alternating measured be higher than one under same activation energies both are a function good agreement calculated valves equation Qo - V·σe. These experimental observations analysis strongly suggest controlled by line defect or dislocation glide process.
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