多层基散装金属玻璃复合材料的微观结构和机械性能,含有各种厚度的丰富的层层材料
Shifeng Lin1, Lei Zhang1, Rushan Lin1
1Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China.
Materials (Basel, Switzerland)
|July 13, 2024
概括
研究人员通过调整富含Ti的层厚度来优化基于Ti的散装金属玻璃复合材料 (BMGCs). 较厚的层降低了强度,但增加了应变,为高级应用提供了定制BMGC机械性能的方法.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 金工业是一种金工业.
背景情况:
- 优化材料的强度-性平衡对于先进的工程应用至关重要.
- 大量金属玻璃复合材料 (BMGCs) 具有独特的机械性能,但需要针对特定性能目标进行精心设计.
- 多层结构为定制金属玻璃的机械行为提供了一条途径.
研究的目的:
- 研究丰富层厚对多层基BMGCs机械性能的影响.
- 了解层厚度,强度,性和变形机制之间的关系.
- 为优化这些先进复合材料的机械性能制定准则.
主要方法:
- 制造基于Ti的多层BMGC,系统地变化富含Ti的层厚度.
- 机械测试,包括屈曲强度,屈服强度和断裂性测量.
- 微结构分析观察变形模式和断裂表面.
主要成果:
- 柔性收益强度从2066 MPa下降到668 MPa,随着富含Ti的层厚度的增加.
- 随着富含Ti的层厚度的增加,最终强度从2717 MPa下降到1163 MPa.
- 柔性应变显著增加,折断性稳定在100微米厚度的80 MPa·m1/2左右.
- 观察到主导变形模式在不同层厚度的变化.
结论:
- 富含的层的厚度是调整多层基BMGC机械性能的一个关键参数.
- 调整层厚可以优化强度和性之间的权衡.
- 这些发现有助于开发新的高性能BMGCs,以满足苛刻的应用.
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