在合金中增强可塑性的机械起源和预测
Zhaoxuan Wu1,2, Rasool Ahmad1, Binglun Yin1
1Institute of Mechanical Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland.
Science (New York, N.Y.)
|January 27, 2018
概括
可以通过特定的溶液添加而变得柔性. 这些添加物提高了滑动率,克服了限制,使高可塑性合金可用于节能应用.
科学领域:
- 材料科学
- 金属工程
- 固态物理
背景情况:
- 纯由于金字塔位位变化而具有较差的可塑性.
- 这限制了其在需要高能效的应用中使用.
研究的目的:
- 解释稀释溶液添加如何提高的可塑性.
- 根据合金成分来预测可塑性的定量理论.
主要方法:
- 突变动态的理论建模.
- 使用各种合金进行实验验证.
- 传输电子显微镜 (TEM) 用于微结构分析.
主要成果:
- 溶性添加物显著增加非基底位移的交叉滑动和倍增率.
- 这些增强的速度可以防止有害的变化,从而使塑料变形.
- 定量理论可以根据合金组成准确地预测性.
结论:
- 溶液增强的交叉滑动是改善可塑性的关键机制.
- 开发的理论可以指导高可塑性合金的设计.
- 这项研究有助于开发更广泛应用的先进合金.
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