基于Al的功能分级超级金属间化合物用于高性能喷气发动机的轮叶片
Wonjong Jeong1, Jeongho Yang2,3, Joon Phil Choi4,5
1Department of Industrial Laser Technology, Korea Institute of Machinery and Materials, Busan, 46744 Republic of Korea.
概括
这项研究使用先进的增材制造制造一种高强度的基于Al的功能分级材料. 材料 材料 的材料.
科学领域:
- 材料科学与工程 材料科学与工程
- 增材制造 增材制造 增材制造
- 金工业是金工业的一个方面.
背景情况:
- 功能分级材料 (FGMs) 为苛刻的应用提供了量身定制的性能.
- --- (Al-Ti-V) 合金对于高温结构部件至关重要.
- 先进的制造技术对于创建复杂的材料梯度至关重要.
研究的目的:
- 为了制造一个离散的基于Al的功能分级结构,具有特定的Al-Ti-V组成梯度.
- 调查制造的FGM的微观结构特征和机械性能.
- 评估这种FGM在高性能喷气发动机轮机叶片中的潜在应用.
主要方法:
- 基于Al的FGM的制造采用双混合方法:激光粉床融合 (L-PBF) 和CNC削的定向能量沉积 (DED).
- 材料的组成,微观结构和抗拉强度的表征.
- 使用FGM属性的轮叶片系统的拓优化.
主要成果:
- 成功制造了一种基于Al的FGM,具有离散的组成梯度 (48.1Al47.9Ti4.0V/73.7Al24.2Ti2.1V/89.5Al10.0T0.5V).
- 实现了高抗拉强度,范围为0.5至1.7GPa,归因于快速固化,特定的金属间相 (γ型矩阵,γ'-型沉物) 和在粒边界的V型化合物.
- 在树枝状区域中确定了大型的,异构的状沉阶段.
- 证明了低密度 (2.9-3.7 g cm−3) 和高耐热性 (450-900 °C).
结论:
- 开发的基于Al的FGM表现出异常的抗拉强度和热性能.
- 独特的微观结构,包括金属间相和粒边界沉物,是其增强机械性能的关键.
- FGM适用于高性能喷气发动机轮机叶片的拓优化,增强结构刚性和性能.
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