接前的摩擦动处理减轻了热裂变,并加强了AA6061的接接
Ali Jalili1, Ali Ghasemi2, Mehran Torabi Kafshgari1
1Department of Materials Science and Engineering, Sharif University of Technology, Tehran, 11365-9466, Iran.
Scientific reports
|May 4, 2025
概括
摩擦处理 (FSP) 通过提炼基础金属微观结构,有效地防止AA6061接中的热裂变. 这种预接处理提高了抗裂性能,并改善了用于结构应用的接关节强度.
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.
- 接工程 接工程
背景情况:
- 热裂解,特别是固化裂解,是接高强度合金如AA6061.1,这是一个主要的挑战.
- AA6061的融合区 (FZ) 特别容易发生裂,这限制了其在结构应用中的使用.
研究的目的:
- 研究摩擦处理 (FSP) 作为预处理,以提高AA6061.1.的可性和抗裂性能.
- 使用FSP设计AA6061的基本金属微结构,以减轻接接期间的固化裂.
主要方法:
- 多通摩擦处理 (FSP) 应用于AA6061-T6以创建一个超细粒度的基础金属.
- 随后,在FSP处理的材料上进行了融合接.
- 进行了接后拉力测试和微结构分析.
主要成果:
- FSP将AA6061从易裂的材料转变为具有出色的抗裂性材料.
- 用FSP处理的基础金属呈现出超细粒度,在接过程中促进FZ中细粒度的表轴生长.
- 精制的FZ颗粒结构和减少的树石臂间距显著减轻了固化裂纹.
- 接后的T6热处理使得拉伸强度的联合效率为0.95.
结论:
- 摩擦处理是一种高效的预策略,用于提高易裂的合金的融合接性.
- 通过FSP进行工程微结构,可以在AA6061.1.中生产高完整性接.
- 这种方法使高强度合金在苛刻的轻质结构应用中更容易使用.
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