铸造技术2024，Vol.45Issue(6)：551-556,6.DOI:10.16410/j.issn1000-8365.2024.4043
医用钛合金表面喷丸后微米压痕研究
Research on the Microindentation of Medical Titanium Alloy Surfaces after Shot Peening
摘要
Abstract
In this study,high-energy shot peening(HESP)was used to treat the surface of a medical titanium alloy,and the microstructure evolution and micromechanical properties during the treatment process were studied using scanning electron microscopy(SEM),atomic force microscopy(AFM),transmission electron microscopy(TEM),and microindentation.Research has shown that after HESP treatment,a gradient structure is formed on the surface of the material.With increasing impact time,the surface roughness of the material first increases,then decreases,and then gradually stabilizes.TEM analysis shows that nanocrystals are formed at the surface of the material after HESP treatment.Microindentation analysis reveals that the elastic modulus of the strengthened sample decreases as the processing time increases,with a minimum value of approximately 59.026 GPa appearing at the surface position after 60 min of treatment,a decrease of 15.78%compared to that of the untreated sample.Moreover,with increasing shot peening time,the yield strength and strain hardening index gradually increase.关键词
钛合金/高能喷丸/表面纳米晶化/微压痕测试Key words
titanium alloy/high-energy shot peening/surface nanocrystallization/microindentation testing分类
矿业与冶金引用本文复制引用
柴艳,于源,王瑜,郭珉..医用钛合金表面喷丸后微米压痕研究[J].铸造技术,2024,45(6):551-556,6.基金项目
国家重点研发计划(2023YFB3405800) （2023YFB3405800）
中国民航大学民航热灾害防控与应急重点实验室开放基金课题(RZH2021-KF-01) （RZH2021-KF-01）
中国科学院青年创新促进会会员(2021423) （2021423）
