H.T. Zhou
,
X.Q. Zeng
,
Q.D Wang
,
W.J. Ding
金属学报(英文版)
The flow stress behaviors of AZ61 alloy has been investigated at temperature range
from 523 to 673K with the strain rates of 0.001--1s-1. It is found that the average
activation energy, strain rate sensitive exponent and stress exponent are di®erent at
various deformation conditions changing from 143.6 to 176.3kJ/mol, 0.125 to 0.167
and 6 to 8 respectively. A flow stress model for AZ61 alloy is derived by analyzing
the stress data based on hot compression test. It is demonstrated that the flow stress
model including strain hardening exponent and strain softening exponent is suitable
to predicate the flow stress. The prediction of the flow stress of AZ61 alloy has shown
to be good agreement with the test data. The maximum differences of the peak stresses
calculated by the model and obtained by experiment is less than 8%.
关键词:
magnesium alloy
,
null
,
null
