对S460厚板进行在线冷却的模拟和过程优化
Guangyuan Wang1, Zhen Wang2, Feng Chai1
1Division of Structural Steels, Central Iron and Steel Research Institute, Beijing 100081, China.
Materials (Basel, Switzerland)
|June 13, 2025
概括
对厚厚的S460钢板进行热机械控制加工 (TMCP) 的优化,显著提高了内部性. 增强的冷却策略减少了深层部分的微观结构降解,这对于海洋应用至关重要.
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:
- 厚厚的S460钢板对于船舶和离岸平台等海洋结构至关重要.
- 优化其制造,特别是热机械控制加工 (TMCP),对于性能至关重要.
研究的目的:
- 通过TMCP制造的120毫米厚的S460板材的微观结构和性能变化.
- 开发和验证一个优化的冷却方案,以提高板材性能.
主要方法:
- 使用TMCP制造120毫米厚的S460板.
- 开发有限元模型来模拟冷却阶段并预测内部冷却路径.
- 实施和验证一个优化的冷却方案.
主要成果:
- 最初的冷却参数导致60毫米深处的性较差 (59 J冲击能量),原因是铁性贝尼特和珍珠岩.
- 数字模拟证实,在初始条件下,60毫米深处的冷却速度为1.10°C/s.
- 优化的工艺 (725°C,160秒) 在60毫米深处将冷却速率提高到1.36°C/s,将冲击能量提高到144 J,并改进了微观结构.
结论:
- 增强的内部温度梯度和延长的冷却时间有效地抑制了厚钢板中的微结构降解.
- 优化的TMCP冷却方案为制造用于船舶工程的优质超厚钢板提供了理论和实际解决方案.
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