摘要
采用高能喷丸设备对金属钛进行表面纳米化,研究了表面纳米化钛的组织结构、纳米压痕行为和摩擦磨损性能。结果表明,高能喷丸后明显细化了Ti表层的XRD衍射区尺寸、增加了晶格应变,位错密度高达5.4048×1014m-2,位错对屈服强度的贡献值高达226.65 Mpa;表面硬度明显提高约61.7%;摩擦磨损性能与纳米钛相近。
The microstructure, nanoindentation and friction and wear properties of surface-nanocrystalline tita- nium realized by using high-energy shot peening technique are investigated in this paper. The result shows that the X-ray Diffraction（XRD） size of the titanium surface is obviously refined, the lattice strain is increased, the dislocation density is as high as 5. 4048×1014m^-2, the yield strength due to the dislocation is up to 226. 65 Mpa, the surface hardness is improved greatly by about 61.7% and the friction wear property of the samples is similar to the nanoerystalline titanium.
出处
《扬州职业大学学报》
2014年第4期26-30,共5页
Journal of Yangzhou Polytechnic College
关键词
表面纳米化
高能喷丸
硬度
摩擦磨损性能
surface nanocrystallization
high-energy shot peening
hardness
friction wear property
