在Al-06wt.%Cu合金的定向固化过程中模拟树石粗化和再化
Ibrahim Sari1, Nashmi Alrasheedi2, Mahmoud Ahmadein3
1Metallurgy Department, Montanuniversitaet of Leoben, Franz-Josef-Str. 18, 8700 Leoben, Austria.
Materials (Basel, Switzerland)
|February 24, 2024
概括
一个新的子电网模型准确地预测了合金固化过程中二次臂间的演变. 它捕捉了树突臂的生长和粗,这对于理解材料加工中的软区透性至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 固化科学 固化科学 固化科学
背景情况:
- 固化过程中的微结构演变对于材料性能至关重要.
- 二次手臂间距显著影响柔软区域的透性.
- 需要准确的预测模型来优化流程.
研究的目的:
- 开发一个简化的子网格模型,用于二级树突臂的生长和粗化.
- 通过专注于相邻的手臂相互作用来减少计算复杂性.
- 为了验证模型在预测微观结构进化的有效性.
主要方法:
- 开发一个分网模型,专注于两个相邻的二次臂.
- 该模型应用于Al-0.6wt%Cu合金的定向固化.
- 将模型预测与实验观测和现有理论进行比较.
主要成果:
- 该模型有效地预测了Al-0.6wt%Cu合金固化中的粗现象.
- 观察到最初手臂的快速生长,随后较小的手臂重新化.
- 结果与已建立的依赖时间的增长和粗化表达式有很好的一致性.
结论:
- 开发的子网格模型对于预测二级臂间距演变是有效的.
- 该模型可以集成到用于宏观固化模拟的大规模模型中.
- 这种方法有助于理解和控制造过程中微观结构的发展.
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