Hence, it is of considerable significance to study flow stress
behaviors of magnesium alloys.
With the strain increasing, when multiplication of dislocation due to continued deformation and annihilation of dislocation due to dynamic softening are in dynamic balance, flow stress
would keep constant, and deformation of metals would come to a steady stage in which complete dynamic recrystallization grains have equiaxed shape and keep constant size.
where [[sigma]'.sub.ij] = [[sigma].sub.ij] - [1/3][[delta].sub.ij][[sigma].sub.ij] is the deviatoric stress, [~.[sigma]] = [square root of ([3/2][[sigma]'.sub.ij][[sigma]'.sub.ij])] is the equivalent stress or flow stress
, [~.[epsilon]] = [square root of ([2/3][[epsilon].sub.ij][[epsilon].sub.ij])] is equivalent strain, and [[??].[epsilon]] = [square root of ([2/3][dot.[epsilon].sub.ij][dot.[epsilon].sub.ij])] is the equivalent strain rate.
Curves of flow stress
change as the function of strain (so-called flow curves) enables us to forecast behaviour of the material during plastic working .
For the purposes of these rating actions, KBRA performed an analysis consistent with its RMBS methodology through a review of transaction performance to date, generating updated pool loss estimates and examining capital structure behavior under various cash flow stress
scenarios, where applicable.
25, 2033 in Fitch's 'AAAsf' and 'AAsf' cash flow stress
The present investigation aims to construct the high temperature flow stress
model of AZ81E and develop processing map for hot working of AZ81E including optimizing its hot workability.
Constitutive models including the physical model  and phenomenological model  have been developed to describe the flow stress
and mechanical behavior of materials under various loading conditions.
When the materials were tested below [T.sub.g], by modifying the strain rate or the temperature, the materials exhibited different flow stress
where [sigma] is the equivalent flow stress
, [epsilon] is the equivalent plastic strain, [??] is the equivalent plastic strain rate, [[??].sub.0] is the reference equivalent plastic strain, T is the workpiece temperature, [T.sub.m] is the material melting temperature, [T.sub.r] is the room temperature, and other letters are related to workpiece material from experiment measure.