...参数反求；流变应力方程；热压缩变形；有限元[gap=1765]Key words: 6061 aluminum alloy; inverse method; flow stress equation; hot compression deformation; finite element method..
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The flow stress was corrected by the constitutive equation and the power dissipation map was obtained using the corrected stress.
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 results show that relationship between flow stress and strain rate is applied to hyperbolic sine equation in the hot compressive deformation of 6061 aluminum alloy;
研究表明，6061铝合金热压缩塑性变形时的流变应力和应变速率之间的关系满足双曲正弦函数关系式；
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