摘要
本研究通过透射电镜、X射线衍射、以及纳米硬度,研究了分别在室温与深冷条件下熨压后,2024铝合金的微观组织和纳米硬度的变化及影响机理。试验结果表明,深冷熨压和室温熨压均能够细化微观结构,显著熨压表面的硬度。此外,深冷熨压还可以对取向产生明显的影响。本文对于通过深冷条件影响2024铝合金的纳米化具有一定参考意义。
In this work, the changes of microstructure and nano-hardness of 2024 aluminum alloy after burnishing at room temperature and cryogenic conditions were studied by transmission electron microscopy, X-ray diffraction and nanohardness. The results show that both the cryogenic burnishing and the room temperature burnishing can refine the microstructure and significantly increase the nano-hardness of the surface. In addition, cryogenic burnishing can have a significant effect on crystal orientation. This work has certain reference significance for the influence of cryogenic conditions on the nanocrystallization of AA 2024.
作者
赵天舒
骆红云
Zhao Tianshu;Luo Hongyun(School of Material Science and Engineering,Beihang University,Beijing 100083,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2019年第S01期365-368,共4页
Heat Treatment of Metals
基金
高新技术消费品关键部件检测及寿命预测技术研究(2017YFF0210002).
关键词
铝合金
熨压
纳米晶
结构细化
表面强化
aluminum alloy
cryogenic burnishing
nano-crystal
crystal orientation
