高合金FeNiCrMn的tribological行为:一个分子动力学模拟研究研究
Nana Yang1, Haorui Liu1,2, Furong Xu3
1School of Materials Engineering, Longdong University Qingyang 745000 China nanayang_material@163.com lhr_tju@163.com.
RSC advances
|September 24, 2025
概括
同自由的FeNiCrMn高合金 (HEAs) 在不同方向上显示一致的摩擦系数. 较深的内显著增加了摩擦和地下损伤,指导HEA设计用于tribological应用.
科学领域:
- 材料科学 材料科学 材料科学
- 部落学 (tribology) 是一个学科.
- 计算材料科学科学 计算材料科学
背景情况:
- 没有Co的FeNiCrMn高合金 (HEAs) 是Cantor合金的经济高效替代品.
- 了解它们的部落行为对于优化组成和性能至关重要.
- 基本机制需要在原子尺度上进行研究.
研究的目的:
- 研究同原子FeNiCrMn HEA的三元学行为.
- 分析结晶学方向,滑动速度和缩深度的影响.
- 为磨损机制提供原子级的洞察力.
主要方法:
- 使用了分子动力学 (MD) 模拟.
- 模拟的重点是摩擦,脱位动力学和原子相互作用.
- 结晶学方向,滑动速度和缩深度的系统变化.
主要成果:
- 摩擦系数 (COF) 与晶体学方向的变化最小.
- [112] 导向表现出较低的位移密度和均的原子堆积.
- 较深的隙显著增加了COF和地下损伤,这是由于增强的脱位核和应力度.
- 滑动速度对COF的影响微不足道,但通过应变率硬化增加了接触力.
结论:
- FeNiCrMn HEA的部落学行为对缩深度敏感.
- 摩擦和损伤的原子尺度机制得到了阐明.
- 这些发现为设计FeNiCrMn HEAs在tribological应用中提供了指导.
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