期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2020.139104
关键词
Ni-based superalloy; Machining; FIB; TEM
类别
资金
- Engineering and Physical Sciences Research Council (EPSRC)
- Rolls-Royce [EP/H022309/1]
- Rolls-Royce plc.
The surface integrity characteristics of Udimet 720Li subjected to slight damage and damage machining conditions have been studied using a complementary range of techniques such as FIB-SEM, EBSD, TKD, TEM-EDS and nano-indentation. The results indicate the existence of nano-sized grains and no observable tertiary gamma' in regions of severe plastic deformation in the machined surface. The correlation between the machining condition and the resulting plastic deformation is established. Grain refinement of this alloy via machining was achieved by dislocation slip. The nanohardness of the surface of damage machined sample is 40% higher than that of bulk material, which is attributed to the formation of nano-sized grains and high density of dislocations in the superficial layer.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据