奥氏体化温度对高强钢热变形行为的影响

doi:10.3901/JME.260253

机械工程学报 ›› 2026, Vol. 62 ›› Issue (5): 390-398.doi: 10.3901/JME.260253

• 数字化设计与制造 • 上一篇

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奥氏体化温度对高强钢热变形行为的影响

赵明杰^1,2,3, 卢安¹, 黄亮³, 姜丽红¹, 李建军^3,4, 郭正华¹

1. 南昌航空大学材料科学与工程学院南昌 330063;
2. 南昌航空大学江西省航空构件成形与连接重点实验室南昌 330063;
3. 华中科技大学材料科学与工程学院武汉 430074;
4. 黄石科创模具技术研究院黄石 435007

收稿日期:2025-02-09 修回日期:2025-09-16 发布日期:2026-04-23
作者简介:赵明杰,男,1995年出生,博士,讲师,硕士研究生导师。主要研究方向为大型航空构件整体精密成形技术及理论。E-mail:zhaomj@nchu.edu.cn
郭正华(通信作者),男,1971年出生,博士,教授,博士研究生导师。主要研究方向为航空关键构件精密成形技术及理论。E-mail:guozhenghua@nchu.edu.cn
基金资助:
国家自然科学基金(52305373)、江西省自然科学基金(20232BAB214053)、江西省重大科技研发专项(20194ABC28001)、材料成形与模具技术全国重点实验室开放基金(P2024-008)和江西省航空构件成形与连接重点实验室开放基金(EL202303299)资助项目。

Influence of Austenitizing Temperature on the Hot Deformation Behaviors of High-strength Steel

ZHAO Mingjie^1,2,3, LU An¹, HUANG Liang³, JIANG Lihong¹, LI Jianjun^3,4, GUO Zhenghua¹

1. School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063;
2. Jiangxi Key Laboratory of Forming and Joining Technology for Aerospace Components, Nanchang Hangkong University, Nanchang 330063;
3. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074;
4. Huangshi Mold Industrial Technology Research Institute, Huangshi 435007

Received:2025-02-09 Revised:2025-09-16 Published:2026-04-23

摘要/Abstract

摘要： 材料热变形过程的影响参数众多，导致其微观组织演化规律复杂、流动行为难控。为此，基于Gleeble-3500设备全面研究了奥氏体化温度、变形温度及应变速率对300M钢流动行为及微观组织演化的影响规律。结果表明，相比于变形温度和应变速率，奥氏体化温度对300M钢流动行为的影响更加复杂。随着奥氏体化温度增加，300M钢的流动应力在峰值应变前变化不大，在峰值应变后先减小后增加。基于微观组织分析发现，随着变形温度升高、应变速率及奥氏体化温度降低，动态再结晶进展更加充分。奥氏体化温度对动态再结晶进展的影响主要是低奥氏体化温度所带来的初始细小晶粒尺寸促进动态再结晶的发生。为了准确描述奥氏体化温度、变形温度、应变速率及应变耦合作用下的流动应力响应，在Hensel-Spittel模型中引入关于变形前晶粒尺寸的多项式，建立了基于Hensel-Spittel模型修正的300M钢本构模型，该模型预测精度达0.99727。上述研究为300M钢热变形行为的准确预测及调控奠定了理论基础。

关键词: 高强钢, 奥氏体化温度, 初始晶粒尺寸, 动态再结晶, 本构模型

Abstract: The hot deformation behavior of the material is affected by many parameters, which leads to complex microstructure evolution law and difficulty in the control of flow behavior. Therefore, the effects of austenitizing temperature, deformation temperature, and strain rate on the flow behavior and microstructure evolution of 300M steel are studied based on Gleeble-3500 equipment. The results show that the effect of austenitizing temperature on the flow behavior of 300M steel is more complex than that of deformation temperature and strain rate. With the increase of austenitizing temperature, the flow stress of 300M steel changes little before the peak strain, and decreases first and then increases after the peak strain. Based on microstructure analysis, it is found that dynamic recrystallization progresses more fully with the increase of deformation temperature, the decrease of strain rate and austenitizing temperature. The effect of austenitizing temperature on the progress of dynamic recrystallization is mainly ascribed to the fine grain size induced by low austenitizing temperature. In order to accurately describe the coupling effects of austenitizing temperature, deformation temperature, strain rate and strain on the flow stress response, the polynomial of grain size before deformation is introduced into the Hensel-Spittel model, and the constitutive model of 300M steel modified by Hensel-Spittel model is established. The prediction accuracy of the established model reaches 0.997 27. The above study lays a theoretical foundation for accurately predicting and controlling the hot deformation behavior of 300M steel.

Key words: high-strength steel, austenitizing temperature, initial grain size, dynamic recrystallization, constitutive model

中图分类号:

V252

赵明杰, 卢安, 黄亮, 姜丽红, 李建军, 郭正华. 奥氏体化温度对高强钢热变形行为的影响[J]. 机械工程学报, 2026, 62(5): 390-398.

ZHAO Mingjie, LU An, HUANG Liang, JIANG Lihong, LI Jianjun, GUO Zhenghua. Influence of Austenitizing Temperature on the Hot Deformation Behaviors of High-strength Steel[J]. Journal of Mechanical Engineering, 2026, 62(5): 390-398.

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奥氏体化温度对高强钢热变形行为的影响

Influence of Austenitizing Temperature on the Hot Deformation Behaviors of High-strength Steel

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