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添加对Al-Mg-Li合金微观结构,机械性能和腐蚀性能的影响

Yang Huang¹, Weiwei Li¹, Mingdong Wu¹

¹National Key Laboratory of Science and Technology on High-Strength Structural Materials, Central South University, Changsha 410083, China.

Materials (Basel, Switzerland)

|September 28, 2023

概括

将微量 (Be) 添加到--- (Al-Mg-Li) 合金中,可显著提高其机械性能和耐腐蚀性. 观察到的最佳性能是0.1%重量%的添加,改善拉伸强度和抗腐蚀性能.

科学领域:

材料科学材料科学材料科学
金工业是一种金工业.
航空航天工程航空航天工程

背景情况:

--- (Al-Mg-Li) 合金对于轻型飞机组件至关重要.
提高这些合金的性能是航空航天行业的一个关键目标.

研究的目的:

为了研究不同度的 (Be) 对Al-Mg-Li合金性能的影响.
为了确定最佳的Be添加,以增强微观结构,机械强度和耐腐蚀性.

主要方法:

对添加Be的Al-Mg-Li合金进行系统的研究 (0,0.1,0.25,0.50重量%).
评估微结构变化,拉伸性能 (UTS,YS,EL) 和腐蚀性能.
分析含量,谷物精炼,再结晶和无沉区 (PFZ) 之间的关系.

主要成果:

最佳拉伸性能 (UTS: 530 MPa,YS: 370 MPa,El: 9.2%) 通过0.1%的重量%的补充获得.
微粒添加促进了谷物精炼和再结晶,增强了拉伸性能.
最好的耐腐蚀性能在0.1重量%的Be中被观察到,这归因于PFZ宽度减少.
过度的含量导致整体表现下降.

结论:

微量的添加显著提高了Al-Mg-Li合金的综合性能.
确定0.1%重量%Be是平衡机械和腐蚀性能的最佳度.
这一发现为开发先进的轻量级航空航天材料提供了可行的战略.

关键词:

这是一种Al-Mg-Li合金.含量的百里含量腐蚀腐蚀是一种腐蚀.机械性质机械性质机械性质微观结构的微观结构

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