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首页> 外文会议>International conference on superplasticity in advanced materials >Establishment of the High Temperature Constitutive Relationship of the Haynes230 Ni-Based Superalloy
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Establishment of the High Temperature Constitutive Relationship of the Haynes230 Ni-Based Superalloy

机译：Haynes230镍基高温合金高温本构关系的建立

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The high temperature flow behavior of materials is an important basis to study their formability and to determine reasonable forming process parameters. In this work, the high temperature plane strain compression (HTPSC) tests were employed to reveal the high temperature flow behavior of Haynes230 Ni-based superalloy under the wide range of temperatures (950℃-1200℃) and strain rates (0.01/s-10/s). The stress-strain data from the tests were applied to model the strain-compensated Arrhenius physically-based constitutive equation and considering the dynamic recovery (DRV) and dynamic recrystallization (DRX) phenomenological constitutive equation. The comparison indicated that the predictions of the two modeled constitutive equations are in good agreement with the experimental data. The prediction of the flow behavior of Haynes230 Ni-based superalloy of strain-compensated Arrhenius constitutive equation is more accurately (average absolute relative error (AARE) is 2.84%) than that of considering DRV and DRX constitutive equation (AARE is 7.57%).
机译：材料的高温流动行为是研究其可成形性和确定合理的成形工艺参数的重要基础。在这项工作中，采用高温平面应变压缩（HTPSC）测试来揭示Haynes230 Ni基高温合金在宽温度（950℃-1200℃）和应变速率（0.01 / s- 10 / s）。测试中的应力-应变数据被用于对应变补偿的基于物理的Arrhenius本构方程建模，并考虑了动态回复（DRV）和动态重结晶（DRX）现象学本构方程。比较表明，两个模型本构方程的预测与实验数据吻合良好。与考虑DRV和DRX本构方程（AARE为7.57％）相比，应变补偿的Arrhenius本构方程的Haynes230 Ni基高温合金的流动行为预测更准确（平均绝对相对误差（AARE）为2.84％）。

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