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首页> 外文期刊>Journal of Materials Engineering and Performance >A Correction to the Stress–Strain Curve During Multistage Hot Deformation of 7150 Aluminum Alloy Using Instantaneous Friction Factors
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A Correction to the Stress–Strain Curve During Multistage Hot Deformation of 7150 Aluminum Alloy Using Instantaneous Friction Factors

机译：使用瞬时摩擦因子校正7150铝合金多级热变形期间的应力 - 应变曲线

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摘要

Multistage stress–strain curve correction based on an instantaneous friction factor was studied for axisymmetric uniaxial hot compression of 7150 aluminum alloy. Experimental friction factors were calculated based on continuous isothermal axisymmetric uniaxial compression tests at various deformation parameters. Then, an instantaneous friction factor equation was fitted by mathematic analysis. After verification by comparing single-pass flow stress correction with traditional average friction factor correction, the instantaneous friction factor equation was applied to correct multistage stress–strain curves. The corrected results were reasonable and validated by multistage relative softening calculations. This research provides a broad potential for implementing axisymmetric uniaxial compression in multistage physical simulations and friction optimization in finite element analysis.
机译：基于瞬时摩擦因子的多级应力 - 应变曲线校正为7150铝合金的轴对称单轴热压缩。 基于各种变形参数的连续等温轴对称单轴压缩试验计算实验摩擦因子。 然后，通过数学分析拟合瞬时摩擦系数方程。 通过比较与传统的平均摩擦因子校正的单通流量应力校正进行比较单通流应力校正之后，瞬时摩擦系数方程被应用于校正多级应力 - 应变曲线。 通过多级相对软化计算，校正的结果是合理的并且验证。 本研究提供了在多级物理模拟中实现轴对称单轴压缩的广泛电位，有限元分析中的摩擦优化。

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