首页> 外文会议>Asian Pacific conference for fracture and strength'99 (APCFS'99) >High Temperature Flow Stress Behaviors for a High Molybdenum Stainless Steel and Evolution of Microstructure During Hot Deformation
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High Temperature Flow Stress Behaviors for a High Molybdenum Stainless Steel and Evolution of Microstructure During Hot Deformation

机译:高钼不锈钢的高温流动应力行为及热变形过程中的微观组织演变

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摘要

High temperature dynamics mechanical behaviors of high Molybdenum Austenitic Stainless Steelrn00Cr20Ni18Mo6Cu[N] have been investigated by using the methods of hot compression simulation test on thernThermecmaster-Z Simulator. The dynamic recrystallization kinetic equation were established; the flow stress behaviors atrnvarious strain rate and high temperature have been ascertained; a perfect flow stress model considering dynamicrnrecrystallization was also established. It has been verified to have a high accuracy by comparing the calculated prediction resultrnbased on the model and the experiment results. Meanwhile, dynamic microstructures of deformed sample after hot compressionrnsimulation test have also been investigated. High temperature double-stage interrupt compression tests were carried out torninvestigate static recovery, static recrystallization and metadynamic recrystallization process. The evolution of microstructuresrnduring interrupt compression deformation was investigated . The recrystallization behaviors have also been ascertained.
机译:通过在Thermecmaster-Z Simulator上进行热压缩模拟试验,研究了高钼奥氏体不锈钢rn00Cr20Ni18Mo6Cu [N]的高温力学行为。建立了动态​​再结晶动力学方程。确定了在不同应变率和高温下的流动应力行为。建立了考虑动态再结晶的理想流动应力模型。通过将基于模型的预测结果与实验结果进行比较,已证明具有较高的准确性。同时,还研究了热压缩模拟试验后变形样品的动态微观结构。进行了高温双级中断压缩试验,以研究静态恢复,静态重结晶和亚动力重结晶过程。研究了中断压缩变形时微观组织的演变。还确定了重结晶行为。

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