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首页> 外文期刊>Materials transactions >Effects of Pulse Current on Dynamic Recrystallization Behavior of GH4169 Superalloy
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Effects of Pulse Current on Dynamic Recrystallization Behavior of GH4169 Superalloy

机译：脉冲电流对GH4169高温合金动态再结晶行为的影响

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The pulse current was applied on the GH4169 alloy during tensile tests at 800°C. The effects of pulse current on the deformation behavior and recrystallization of the alloy were investigated, and the mechanisms were also discussed. The results show that the deformation resistance decreases and the elongation increases significantly by applying the pulse current during tensile tests of the alloy. And the effects of pulse current on the strength and plasticity of the alloy are more remarkable as the pulse current energy increases. It is found that the deformation resistance of the alloy can be decreased since the dislocation motion can be promoted during the tensile testing. The initial temperature of recrystallization can be reduced by the electric effect of the pulse current and the dynamic recrystalllization nucleation is promoted. Therefore, the dynamic recrystallization would occur at lower temperature than that of the alloy without pulse current. That is the main reason for the decreasing of deformation resistance and the increasing of plastic deformation ability of GH4169 alloy under the pulse current.
机译：在800°C的拉伸试验过程中，将脉冲电流施加到GH4169合金上。研究了脉冲电流对合金变形行为和再结晶的影响，并探讨了机理。结果表明，在合金的拉伸试验过程中，通过施加脉冲电流，抗变形性降低，伸长率显着提高。随着脉冲电流能量的增加，脉冲电流对合金强度和塑性的影响更加明显。已经发现，由于可以在拉伸试验中促进位错运动，因此可以降低合金的变形阻力。可以通过脉冲电流的电效应降低重结晶的初始温度，并促进动态重结晶成核。因此，动态再结晶将在比没有脉冲电流的合金更低的温度下发生。这是在脉冲电流下GH4169合金的抗变形能力下降和塑性变形能力增强的主要原因。

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