旋转摩擦接工艺的热机械和微结构模拟,采用有限元方法
Hossein Mani1, Aboozar Taherizadeh1, Behzad Sadeghian1
1Department of Materials Engineering, Isfahan University of Technology, Isfahan 8415683111, Iran.
Materials (Basel, Switzerland)
|February 24, 2024
概括
有限元素方法模拟准确地预测了Inconel 718管的旋转摩擦接过程中的热力学和微观结构变化,降低了实验成本.
科学领域:
- 材料科学与工程 材料科学与工程
- 机械工程 机械工程
- 计算材料科学科学 计算材料科学
背景情况:
- 旋转摩擦接对于在先进工业中连接元件至关重要.
- 热力学和微观结构参数的实验测量具有挑战性和成本.
- 像Inconel 718这样的超级合金在高性能应用中至关重要.
研究的目的:
- 模拟使用有限元法在Inconel 718管的旋转摩擦接过程中发生的热力学和微观结构演变.
- 为了减少与实验分析相关的成本和复杂性.
- 建立热力学和微观结构参数之间的相关性.
主要方法:
- 用于热力学和微观结构模拟的有限元素方法 (FEM).
- 通过FORTRAN子程序实现的Johnson-Avrami模型用于微结构分析.
- 对模拟结果与实验数据进行验证.
主要成果:
- 数字模拟准确地预测了温度,应变,应变速率,动态再结晶和粒径分布.
- 计算的再结晶区厚度 (480-850微米) 与实验值 (500-800微米) 非常相匹配.
- 预测的颗粒大小 (2.07-2.15微米) 与实验测量 (1.9-2.2微米) 相一致.
结论:
- FEM模拟是分析Inconel 718的旋转摩擦接的经济有效和可靠的工具.
- 这项研究表明,可预测的微观结构进化与热力学变化相关.
- 开发的模型提供了对优化接参数的见解,以满足所需的材料性能.
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