关于马石不钢的动态再结晶行为和数值模拟预测研究 04Cr13Ni5MoMo
Tonghui Sun1,2,3, Huiqin Chen1, Ruxing Shi2,3
1School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China.
Materials (Basel, Switzerland)
|September 13, 2025
概括
这项研究通过开发动态再结晶 (DRX) 模型,优化了马氏体不钢的热造. 该模型准确地预测了颗粒大小,指导了大型钢铁造品的改进制造工艺.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
背景情况:
- 超大型马氏体不钢造品经常表现出不良的粗和混合粒度结构.
- 控制颗粒大小对于提高这些钢件的机械性能和性能至关重要.
研究的目的:
- 为了研究04Cr13Ni5Mo马氏体不钢的热变形行为.
- 建立可靠的动态再结晶 (DRX) 动态模型,以优化造过程.
- 通过有限元分析 (FEA) 验证模型,以预测和控制颗粒大小.
主要方法:
- 使用Gleeble-1500D在950-1200°C的温度下进行热力学模拟试验,应变速率为0.001-0.1s-1.
- 基于实验流应力数据的动态再结晶 (DRX) 动态模型的开发.
- 将DRX模型集成到有限元软件中进行模拟和验证.
主要成果:
- 在04Cr13Ni5Mo钢中,动态再结晶 (DRX) 在温度>1050°C和应变速率<0.1s-1>时更受青.
- FEA模拟与实验颗粒大小 (48.98微米与48.18微米在1100°C/0.01秒-1) 非常相匹配.
- 已建立的DRX模型为中央变形区的粒径提供了准确的预测.
结论:
- 开发的DRX动力模型和FEA方法可靠地预测和控制马氏体不钢件的粒度.
- 这为优化高温造工艺提供了必要的理论指导.
- 这些发现有助于生产高质量的大型马氏体不钢零部件.
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