功能分级混合复合材料的特征,机械性能和磨损行为
N Radhika1, R Jojith2, S Vignesh2
1Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, India. n_radhika1@cb.amrita.edu.
Scientific reports
|August 22, 2024
概括
这项研究开发了一种SiC/TiS2/AlSi12Cu复合材料,其硬度和抗拉强度提高,特别是在外层. 优化的参数为苛刻的应用提供了卓越的耐磨性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 复合材料 复合材料 复合材料
背景情况:
- 混合功能分级复合材料提供量身定制的性能.
- 离心造使得梯度材料的分布成为可能.
- SiC/TiS2/AlSi12Cu复合材料结合了陶和金属性能.
研究的目的:
- 开发一个SiC/TiS2/AlSi12Cu混合功能分级复合材料.
- 研究其微观结构,机械和部落学特征.
- 通过过程参数分析优化磨损性能.
主要方法:
- 离心造用于复合材料制造.
- 电子反射衍射 (EBSD) 用于微观结构分析.
- 硬度,抗拉力和针盘式三角仪测试.
- 响应表面方法 (RSM) 用于参数优化.
主要成果:
- 实现了渐变颗粒分布,具有颗粒丰富的外部区域.
- 观测到微观结构的细化和 θ-Al2Cu 间金属相的形成.
- 外层表现出最大硬度 (93 HB) 和抗拉强度 (202 MPa).
- 优化的参数 (16N负荷,1.6米/秒速度,804米距离) 增强了耐磨性.
- 外部区域显示出优越的耐磨性,尽管在恶劣条件下材料损失增加.
结论:
- 开发的SiC/TiS2/AlSi12Cu复合材料显示了机械性能的显著改善.
- 微观结构特征,包括谷物精炼和金属间相形成,有助于提高性能.
- 复合材料具有出色的耐磨性,特别是在外部区域,使其适合高磨损应用.
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