在CoCrNi和CrNi2合金中排序的全面分析
Vinícius P Bacurau1,2, Pedro A F P Moreira3, Gustavo Bertoli4,5
1Department of Materials Engineering, Federal University of São Carlos, São Carlos, São Paulo, Brazil. vinicius.bacurau@estudante.ufscar.br.
Nature communications
|September 6, 2024
概括
在CoCrNi合金中,化学短程顺序 (CSRO) 对机械性能没有显著影响. 然而,CrNi2合金的远程订购显著改变了产强度,拉伸应力和性.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 物理化学 物理化学
背景情况:
- 化学短程订单 (CSRO) 对其对材料性能的影响进行了辩论.
- 量化CSRO具有挑战性,导致文献数据相互矛盾.
- 了解CSRO在CoCrNi等合金中的作用至关重要.
研究的目的:
- 在CoCrNi和CrNi2合金中明确证明和量化CSRO.
- 调查CSRO的形成和破坏机制.
- 确定CSRO对这些合金机械行为的影响.
主要方法:
- 高精度热量计用于CSRO检测和量化.
- 原子模拟以了解CSRO机制.
- 同步射线X射线衍射,X射线吸收光谱和TEM用于表征.
- 在现场使用同步龙X射线衍射进行拉伸试验.
主要成果:
- 在CoCrNi和CrNi2合金中,CSRO被最终证明并量化.
- 基于热分析,提出了CSRO形成/破坏的机制.
- 在CoCrNi合金中的不同CSRO水平并没有显著改变机械性能.
- 在CrNi2合金中的远程订购显著影响了产强度,最终拉伸应力和性.
结论:
- CSRO对机械性能的影响取决于合金.
- 高精度热度计和原子模拟为CSRO分析提供了强大的方法.
- 这些发现澄清了当地订购与远程订购在合金性能中的作用.
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