在正常超声波振动处理下,TA1的机械反应和微观结构演变
Yang Liu1, Chunju Wang2, Haolan Zeng1
1School of Physical and Electromechanical Engineering, Jishou University, Jishou 416000, China.
Materials (Basel, Switzerland)
|May 7, 2025
概括
正常的超声波振动 (UV) 在单轴张力时显著降低TA1薄板的应力,降低了高达20%的变形阻力并改变了断裂模式. 这项研究揭示了紫外线.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 物理 物理学 物理
背景情况:
- 超声波振动 (UV) 以其在塑料成型中的声波可塑性作用而闻名.
- 大多数研究都在纵向地应用紫外线,与现实世界板材成型条件不同.
研究的目的:
- 在TA1薄板上研究正常的紫外线辅助单轴张力.
- 在正常紫外线下分析机械性能和微观结构的演变.
- 阐明微层紫外线软化机制.
主要方法:
- 在TA1薄板上进行了正常的紫外线辅助张力测试.
- 在不同超声波振幅和应变速率下使用应力-应变曲线分析了宏观机械行为.
- 通过扫描电子显微镜 (SEM) 和电子反射散射衍射 (EBSD) 描述骨折形态和微观结构演变.
主要成果:
- 通过13.9微米的超声波振幅实现了高达20%的应力减轻.
- 观察到随着紫外线振幅的增加,从柔性骨折转变为脆性骨折.
- 降低低角粒边界分数,核平均误导 (KAM) 和几何必要脱位 (GND) 密度.
- 由于正常的紫外线叠加,多样化的塑料变形机制.
结论:
- 正常的紫外线显著降低TA1薄板的变形阻力.
- 微观结构的变化,包括LAGB,KAM和GND的减少,解释了软化效应.
- 正常的紫外线提供了一种有前途的方法来增强塑料成型过程.
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