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首页> 外文期刊>Materials Science and Technology: MST: A publication of the Institute of Metals >Research of initial dynamic recrystallisation for AZ31 alloy with pulse current
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Research of initial dynamic recrystallisation for AZ31 alloy with pulse current

机译：脉冲电流对AZ31合金初始动态再结晶的研究

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Tensile tests with pulse current for AZ31 alloy under room temperature and different voltages were carried out. Pulse current influence on the critical condition of initial dynamic recrystallisation for AZ31 alloy was investigated. The critical value was determined by one-parameter approach and validated by metallographic observation. The results showed that, with current voltage increased, the ultimate strength decreased, and the amount of strain hardening before reaching the ultimate strength decreased. When the voltage increases, high dynamic recrystallisation degree can be obtained, but due to the high electroplastic effect, the dynamic recrystallisation grain grows up and the material mechanical property deteriorates. The microstructure observation proved that the critical condition for initial dynamic recrystallisation can be determined with the one-parameter approach.
机译：在室温和不同电压下对AZ31合金进行脉冲电流拉伸试验。研究了脉冲电流对AZ31合金初始动态再结晶临界条件的影响。临界值通过一参数方法确定，并通过金相观察验证。结果表明，随着电流电压的增加，极限强度降低，达到极限强度之前的应变硬化量减小。当电压增加时，可以获得高的动态再结晶度，但是由于高的塑性效应，动态的再结晶晶粒长大并且材料的机械性能劣化。显微组织观察证明，可以使用单参数方法确定初始动态再结晶的临界条件。

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