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赵张龙,闵晓楠,徐文馨,曹澜川,张鸽,宋旭阳,李晖.AerMet100超高强钢在热加工过程中的动态再结晶模型研究[J].稀有金属材料与工程(英文),2020,49(10):3285~3293.[Zhao Zhanglong,Min Xiaonan,Xu Wenxin,Cao Lanchuan,Zhang Ge,Song Xuyang and Li Hui.Dynamic recrystallization models of AerMet100 ultrahigh-strength steel during thermo-mechanical processing[J].Rare Metal Materials and Engineering,2020,49(10):3285~3293.]
Dynamic recrystallization models of AerMet100 ultrahigh-strength steel during thermo-mechanical processing
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Received:February 20, 2020  Revised:April 16, 2020
DOI:
Key words: AerMet100 steel  Dynamic recrystallization  Hot deformation  Microstructure
Foundation item:国家自然科学基金,陕西省国家自然科学基金
Author NameAffiliation
Zhao Zhanglong,Min Xiaonan,Xu Wenxin,Cao Lanchuan,Zhang Ge,Song Xuyang and Li Hui  
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Abstract:
      In order to accurately predict the microstructure evolution during thermo-mechanical processing of AerMet100 ultrahigh-strength steel, the dynamic recrystallization (DRX) models including DRX volume fraction and DRX grain size were established by conducting a series of isothermal hot compression tests. The hot deformation behavior of the alloy in a wide range of temperatures from 800 ?C to 1040 ?C, strain rates from 0.01 s-1 to 10 s-1 and deformation degree from 15% to 60% were analyzed. The Zener-Hollomon parameter in the constitutive model for the AerMet100 steel was obtained to establish DRX models. The effects of deformation parameters on the microstructural evolution were quantitatively predicted through the established DRX models. The microstructure observations showed that higher temperature, lower strain rate and larger deformation degree were beneficial to obtaining the homogenization and refinement of the microstructure due to the occurrence of DRX. The good agreement between the prediction and the experiment validated the accuracy of the established DRX models. And the results indicated that the DRX models could be used to quantitatively predict the microstructure evolution of AerMet100 steel components during thermo-mechanical processing at different hot deformation conditions.