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A study on flow behavior of A-286 superalloy during hot deformation

机译：A-286高温合金热变形过程中的流动行为研究

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摘要

The hot deformation behavior of A-286 superalloy has been characterized using hot compression experiments in the temperatures between 1000 and 1100℃ and strain rates varying between 0.001 and 0.1 s~(-1). In addition, hot workability of this alloy has been analyzed by employing flow-localization parameter. The results show that both kinds of softening mechanism, dynamic recovery and dynamic recrystallization, occur during hot working, where at 1000℃ the main mechanism is dynamic recovery and at higher temperatures and strain rate of 0.001-0.01 s~(-1) dynamic recrystallization takes place. Calculations demonstrates that this alloy mainly have a good workability for the utilized deformation conditions however, at temperatures around 1050℃ critical conditions may be raised and flow localized region could be formed.
机译：A-286高温合金的热变形行为是通过在1000至1100℃的温度和0.001至0.1 s〜（-1）的应变速率下的热压缩实验来表征的。另外，已经通过使用流动局部化参数分析了该合金的热加工性。结果表明，热加工过程中同时发生了动态恢复和动态再结晶这两种软化机理，其中以1000℃为主要机理是动态恢复，在较高的温度和应变率下为0.001-0.01 s〜（-1）动态再结晶。发生。计算表明，该合金主要在所使用的变形条件下具有良好的加工性能，但是，在1050℃左右的温度下，可能会提高临界条件并形成流动局部区域。

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