测量了真应力应变曲线。
得到了均匀形变阶段和非均匀形变阶段的真应力应变关系。
The stress-stain relation for homogeneous stage and inhomogeneous stage of deformation were obtained.
通过单道次压缩热模拟试验，得到了BS 700 MC的真应力-真应变曲线。
Through single pass thermo-simulation compression experiment, the true stress-strain curves were obtained for BS700MC.
该材料的真应力-真应变曲线由应力激增阶段、应力下降阶段、稳态阶段和应力增加阶段组成；
There were drastic increase of true stress, drastic falling of true stress, steady stage and increase of true stress in its true stress-strain curve.
在含硼中碳钢的热压缩变形过程中，应变速率一定时，随着变形温度的升高，真应力下降；
The flow stress decreased as deformation temperature increased and became higher as strain rate rises.
弄清受荷单元的主应力主应变关系是认识各向异性变形性状的有效方法，而真三轴试验是必要的手段。
A valid method to make the anisotropic deformation behavior of load bearing unit clear is to research principal stress and principal strain relationship, and true triaxial test is a necessary means.
由试验得出变形过程中的真应力真应变曲线，并利用本构方程对流变应力值进行修正，进而根据修正后的应力值绘制功率耗散图。
The flow stress was corrected by the constitutive equation and the power dissipation map was obtained using the corrected stress.
结果表明，流动应力随应变速率的增大而增大，不同温度和应变速率的真应力-真应变曲线呈稳态流动型。
The results show that the flow stress increases with the increase of strain rate, and the true stress-true strain curves at different temperature and strain rates are stable-state.
随应变速率升高，真应力-真应变曲线特征从“平缓”型向“锯齿”型转变，材料热变形软化特征增强。
As the rise of the strain rate, the feature of the true stress - true strain curve changed from "flat" to "serration", and the thermal deformation softening feature was reinforced.
采用真应力一真应变曲线和TEM研究其高温压缩变形中的流变应力行为和它的动态再结晶过程。
The dynamic recrystallization mechanism during hot compress was examined by the true stress-strain curves and TEM.
采用真应力一真应变曲线和TEM研究其高温压缩变形中的流变应力行为和它的动态再结晶过程。
The dynamic recrystallization mechanism during hot compress was examined by the true stress-strain curves and TEM.
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