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首页> 外文期刊>Journal of Materials Engineering and Performance >Role of Precipitates in Recrystallization Mechanisms of Nb-Mo Microalloyed Steel
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Role of Precipitates in Recrystallization Mechanisms of Nb-Mo Microalloyed Steel

机译：沉淀物在Nb-Mo微合金钢重结晶机制中的作用

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摘要

Recrystallization behavior of a Nb-Mo microalloyed steel has been investigated using double-hit compression tests. A suitable reheating temperature and soaking time were established for the complete dissolution of the microalloying precipitates prior to hot deformation. The influence of hot deformation conditions on the flow behavior and the effect of alloying elements, Nb in particular, on austenite recrystallization kinetics are highlighted. The strain-induced precipitation has been found to play an important role in hindering recrystallization kinetics. Post-deformation microstructural analysis indicates that strain-induced grain boundary migration (SIMB) is one of the mechanisms for the formation of recrystallized grains. Retardation of recrystallization has been explained by estimating pinning force of Nb(C, N) precipitates and recrystallization driving force at 1000 degrees C, which is in good agreement with the experimental observations in the present study as well as other reported data. The study brings out a better understanding on the influence of strain-induced precipitates on recrystallization behavior.
机译：使用双击压缩试验研究了Nb-Mo微合金钢的重结晶行为。建立合适的再加热温度和浸泡时间，以在热变形之前完成微合金化沉淀的完全溶解。突出了热变形条件对流动性能和合金元素Nb的流动性能和效果的影响，特别是奥氏体再结晶动力学。已经发现应变诱导的沉淀在阻碍重结晶动力学中起重要作用。后变形微观结构分析表明应变诱导的晶界迁移（SIMB）是形成重结晶颗粒的机制之一。通过在1000℃下估计Nb（C，N）的沉淀物和重结晶驱动力的凝固力来解释重结晶的延迟，这与本研究中的实验观察以及其他报告的数据一致。该研究提出了更好地了解应变诱导沉淀物对重结晶行为的影响。

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