实现形状记忆陶的可逆相变的形状记忆陶制约在
Wangshu Zheng1, Yan Shi1,2, Lei Zhao1
1State Key Lab of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China.
Nature communications
|November 5, 2023
概括
(Al) 复合材料中的添加的 (CZ) 增强了机械性能. 基矩阵能够在CZ中实现可逆相变,提高强度和能量吸收,无需断裂.
科学领域:
- 材料科学 材料科学 材料科学
- 陶制品 在陶方面.
- 复合材料 复合材料 是一种复合材料.
背景情况:
- 形状记忆陶具有独特的特性,但面临着整合挑战.
- 在陶矩阵复合材料中实现可逆相变是很困难的.
研究的目的:
- 为了制造和表征添加的 (CZ) 增强 (Al) 基质复合材料.
- 研究这些复合材料的机械性能和相变态行为.
主要方法:
- 制造CZ/Al矩阵复合材料.
- 宏观和微观机械测试 (压力强度,能量吸收).
- 在热和应力刺激下分析相变的分析.
主要成果:
- 与纯相比,复合材料的压力强度和能量吸收率增加了一倍以上.
- 由于Al矩阵约束,CZ的完全奥氏体化得到了实现.
- 在微柱体中发生了可逆的马氏体变化,没有断裂.
结论:
- Al矩阵提供了几何限制,强大的接口和负载传递机制.
- 矩阵流动性适应相位转换期间的体积变化.
- CZ/Al复合材料表现出增强的机械性能和功能阶段转换能力.
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