超马氏体不钢的高温损伤行为研究 04Cr13Ni5Mo 基于有限元素模拟
Tonghui Sun1,2,3, Jihong Tian1, Huiqin Chen1
1School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China.
这项研究研究了04Cr13Ni5Mo马氏体不钢造裂. 规范化Cockcroft和Latham (NCL) 模型准确预测裂,提高造过程的可靠性.
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
- 机械工程 机械工程
背景情况:
- 04Cr13Ni5Mo马氏体不钢易于在高温下造裂,导致部件故障.
- 了解高温损伤机制对于防止造缺陷至关重要.
研究的目的:
- 为了研究04Cr13Ni5Mo马氏体不钢的高温损伤机制.
- 开发和验证造裂的预测模型.
- 提高有限元法在预测造缺陷方面的可靠性.
主要方法:
- 使用Gleeble-1500D热力学模拟器 (950-1200°C,0.001-1秒-1),进行高温拉伸测试.
- 使用EBSD和TEM进行微结构分析.
- 开发了标准化的Cockcroft和Latham (NCL) 和Oyane损伤模型.
- 与Forge®NxT 3.2软件集成的有限元模拟.
主要成果:
- 实验数据描述了高温损伤行为和微观结构的演变.
- 建立了NCL和Oyane模型并集成到FE软件中.
- 模拟和实验骨折位移显示高相关性 (NCL的R=0.995,Oyane的R=0.991).
- 该NCL模型在预测造裂方面表现出卓越的准确性.
结论:
- NCL模型为预测04Cr13Ni5Mo.中的造裂提供了一个可靠的工具.
- 有限元分析是预测造裂缺陷的可靠方法.
- 这项研究有助于优化造工艺,防止马氏体不钢的故障.
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