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ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2024 , Vol. 45 >Issue 18: 429734 - 429734

DOI: https://doi.org/10.7527/S1000-6893.2023.29734

Material Engineering and Mechanical Manufacturing

In-situ analysis on microstructure evolution of 300M steel during static holding process

  • Mingjie ZHAO ,
  • Liang HUANG ,
  • Chaoyuan SUN ,
  • Xiuliang LIU ,
  • Jianjun LI ,
  • Zhenghua GUO
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  • 1.School of Aeronautical Manufacturing Engineering，Nanchang Hangkong University，Nanchang 　330063，China
    2.Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components，Nanchang Hangkong University，Nanchang 　330063，China
    3.State Key Laboratory of Materials Processing and Die & Mould Technology，School of Materials Science and Engineering，Huazhong University of Science and Technology，Wuhan 　430074，China
    4.China National Erzhong Group Deyang Wanhang Die Forging Co. LTD. ，Deyang 　618000，China
    5.Jiangxi Jinghang Aviation Forging and Casting Co. LTD. ，Jingdezhen 　333046，China
    6.Huangshi Mold Industrial Technology Research Institute，Huangshi 　435007，China
E-mail： guozhenghua@nchu.edu.cn

Received date: 2023-10-18

  Revised date: 2023-12-14

  Accepted date: 2023-12-20

  Online published: 2023-12-26

Supported by

National Natural Science Foundation of China(52305373);Jiangxi Provincial Natural Science Foundation(20232BAB214053);Science and Technology Major Project of Jiangxi Province(20194ABC28001);Fund of Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components(EL202303299);PhD Starting Foundation of Nanchang Hangkong University(EA202303235)

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Abstract

The effects of different processing parameters on microstructure evolution of 300M steel during the static holding process are studied in situ by combining hot compression and high-temperature holding experiments. Results show that the influence of strain on the average grain size evolution during the static holding process is mainly attributed to the hereditary of microstructures， the influence of strain rate is mainly attributed to strain storage energy， the influence of holding temperature is mainly attributed to the temperature dependence of static recrystallization， and the influence of holding time is mainly attributed to the mechanisms of grain nucleation and annexation. Based on the relationship between processing parameters and grain size evolution， a new grain size model is proposed， which can effectively describe the effects of deformation parameters and static holding parameters on grain size evolution. The above research provides a theoretical foundation for accurately predicting and effectively controlling microstructure evolution during the multi-pass hot forging of 300M steel heavy components.

Key words： ultrahigh strength steel; in-situ investigation; static holding process; microstructure evolution; grain size model

Cite this article

Mingjie ZHAO , Liang HUANG , Chaoyuan SUN , Xiuliang LIU , Jianjun LI , Zhenghua GUO . In-situ analysis on microstructure evolution of 300M steel during static holding process[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(18) : 429734 -429734 . DOI: 10.7527/S1000-6893.2023.29734

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Total visits: 6658907 Today visits: 1341