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在7021合金的挤出接上进行FEM数值和实验工作

Dariusz Leśniak¹, Wojciech Libura¹, Beata Leszczyńska-Madej¹

¹Faculty of Non-Ferrous Metals, AGH University of Science and Technology, 30-059 Krakow, Poland.

Materials (Basel, Switzerland)

|September 9, 2023

概括

这项研究表明,可以实现AlZnMg合金的高质量挤出接. 优化的合金组成,模具设计和工艺条件产生了强,这对于先进的应用至关重要.

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.
制造业工程制造工程

背景情况:

对AlZnMg合金的挤出接带来了重大挑战,包括高力和低接质量.
在这些合金中实现高强度,无缺陷的接对于它们在苛刻的应用中使用至关重要.

研究的目的:

为了研究7021合金在各种挤出条件下的接性.
确定生产AlZnMg合金管中高质量的纵向接的最佳参数.
评估由此产生的接的微观结构和机械性能.

主要方法:

实验室规模的挤出接试验使用了三种不同的7021 AlZnMg合金组成.
在400,450和500°C的温度下进行接性评估,固定压力为300MPa.
使用光学显微镜 (OM) 和扫描电子显微镜与能量分散光谱 (SEM/EDS) 的微结构分析.
用有限元法 (FEM) 分析管挤出过程中孔孔模的温度-压力动态.
工业挤出试验以验证实验室发现并评估接质量.

主要成果:

在AlZnMg合金管中通过挤出接成功生产高质量,高强度的接.
接强度在基础材料强度的96-101%之间,表明了极好的关节完整性.
优化合金组合,窗口模具设计和控制的温度和速度条件是关键因素.
微观结构评估证实了声音接的形成,缺陷最小.

结论:

在工业条件下,可以在AlZnMg合金中实现高质量的挤出接.
仔细选择合金组成,孔模设计和工艺参数对于优越的接性能至关重要.
这项研究为可靠制造高强度接合金组件提供了途径.

关键词:

合金AlZnMg合金的使用情况挤出接挤出接挤出接门口模具的几何结构接质量的质量接条件接条件

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