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Surrogate Model Development for Digital Experiments in Welding
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30CrMnMoRe高强度钢接的数值模拟和微结构分析
Jimi Fang1, Xusheng Qian2, Yanke Ci1
1School of Digital Technology and Engineering, Ningbo University of Finance and Economics, Ningbo 315175, China.
Materials (Basel, Switzerland)
|September 14, 2024
概括
这项研究通过分析微观结构和模拟机械性能来探索接高强度钢. 结果证实了模拟的准确性,为优化接过程提供了更好的材料性能的见解.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 金工业是金工业的一个方面.
背景情况:
- 高强度钢在各种行业中至关重要,但它们的接需要仔细控制热循环和由此产生的微观结构.
- 了解接参数,热受影响区 (HAZ) 微观结构和机械性能之间的关系对于结构完整性至关重要.
- 以前的研究往往侧重于特定的方面; 结合实验和模拟方法提供了更全面的观点.
研究的目的:
- 研究接电流对单通接高强度钢的微观结构和机械性能的影响.
- 开发和验证一个数值模拟模型,用于预测接接头的微观结构和机械行为.
- 为了将模拟的微结构特征 (颗粒大小) 与不同HAZ区域预测的机械性质相关联.
主要方法:
- 实验性接高强度钢板使用变化电流.
- 通过光学显微镜 (OM),扫描电子显微镜 (SEM) 和电子反射散射衍射 (EBSD) 进行接接头的微结构性表征.
- 使用有限元法 (FEM) 和材料属性模拟软件对接过程进行数值模拟.
主要成果:
- 关于粒度大小和模拟热循环的实验数据被用作微观结构预测的输入.
- 模拟软件准确地预测了不同HAZ区域的微观结构 (粗粒与细粒) 和机械性能.
- 模拟的机械性能与实验测试结果有很好的一致性,验证了预测模型.
结论:
- 该研究通过综合实验和模拟成功将接参数与微观结构演变和机械性能联系起来.
- 开发的模拟方法为预测接高强度钢接头的性能提供了可靠的工具.
- 优化接电流可以有效地控制HAZ微结构,并增强高强度钢的机械性能.
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