一种新的Ti/TiAl层复合材料,具有出色的剪切性能
Zhanxing Chen1, Jian Ji1, Yupeng Wang2
1School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou, 450046, China.
这项研究使用火花等离子体烧结制备了/-层复合材料. 新型Ti/TiAl复合材料由于其独特的现场反应过渡接口,具有出色的剪切性能.
科学领域:
- 材料科学 材料科学 材料科学
- 金工程 金工程 金工程
背景情况:
- - (TiAl) 合金对于高温应用至关重要.
- 开发具有增强机械性能的先进复合材料对于航空航天和汽车行业至关重要.
研究的目的:
- 为了准备和表征Ti/TiAl层复合材料.
- 为了研究不同中间层对剪切强度和断裂行为的影响.
- 了解现场反应过渡接口在提高剪切性能方面的作用.
主要方法:
- 交替堆叠的Ti和TiAl粉末的火花等离子烧结 (SPS).
- 层复合材料的微观结构分析.
- 层间剪切测试以确定剪切强度和断裂机制.
主要成果:
- 成功合成了带有Ti,Ti3Al和TiAl层的Ti/TiAl层复合材料.
- 达到约622 MPa (Ti 层),466 MPa (TiAl 层) 和328 MPa (Ti3Al 层) 的最终切削强度.
- 观察到不同的裂传播行为受到中间层组成和性质的影响.
结论:
- 现场反应过渡接口是新型Ti/TiAl层复合材料优良剪切性能的关键.
- 柔性Ti层有效地通过塑料变形释放剪切应力,提高复合材料的整体性能.
- 了解这些接口机制为设计先进的高性能材料提供了一条途径.
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