Physical Vapor Deposited(PVD)TiAlN coatings are extensively utilized as protective layers for cutting tools,renowned for their excellent comprehensive performance.To optimize quality control of TiAlN coatings for cutt...Physical Vapor Deposited(PVD)TiAlN coatings are extensively utilized as protective layers for cutting tools,renowned for their excellent comprehensive performance.To optimize quality control of TiAlN coatings for cutting tools,a multi-scale simulation approach is proposed that encompasses the microstructure evolution of coatings considering the entire preparation and service lifecycle of PVD TiAlN coatings.This scheme employs phase-field simulation to capture the essential microstructure of the PVD-prepared TiAlN coatings.Moreover,cutting simulation is used to determine the service temperature experienced during cutting processes at varying rates.Cahn-Hilliard modeling is finally utilized to consume the microstructure and service condition data to acquaint the microstructure evolution of TiAlN coatings throughout the cutting processes.This methodology effectively establishes a correlation between service temperature and its impact on the microstructure evolution of TiAlN coatings.It is expected that the present multi-scale numerical simulation approach will provide innovative strategies for assisting property design and lifespan prediction of TiAlN coatings.展开更多
研究在医用Ti6Al4V合金上采用阴极电弧蒸发沉积制备的纳米晶TiAlN涂层的表面特性和体外腐蚀性能。采用XRD和FE-SEM对其结构和表面形貌进行分析,采用显微压痕法表征其表面的显微硬度,在模拟体液和人工唾液中进行体外腐蚀实验。结果表明:...研究在医用Ti6Al4V合金上采用阴极电弧蒸发沉积制备的纳米晶TiAlN涂层的表面特性和体外腐蚀性能。采用XRD和FE-SEM对其结构和表面形貌进行分析,采用显微压痕法表征其表面的显微硬度,在模拟体液和人工唾液中进行体外腐蚀实验。结果表明:与无涂层合金相比,沉积TiAlN涂层后合金的表面硬度提高,为44.4 GPa,弹性模量为419.9 GPa,塑性变形能力增强,润湿角由(70.61±1.25)°增大到(86.27±2.2)°。生物腐蚀实验表明,沉积TiAlN涂层后,Ti6Al4V合金的腐蚀电位显著正移约150 m V,腐蚀电流密度显著降低约一个数量级,电荷转移电阻提高,证明合金的耐腐蚀性提高。与无涂层的合金相比,沉积TiAlN涂层后合金的表面性能、力学性能和耐腐蚀性能均有所提高。展开更多
基金support from Youth Fund of the National Natural Science Foundation of China(Grant No.52101028)China Postdoctoral Science Foundation(Grant No.2021M703628)Natural Science Foundation of Hunan Province(Grant No.2022JJ40629)is acknowledged.
文摘Physical Vapor Deposited(PVD)TiAlN coatings are extensively utilized as protective layers for cutting tools,renowned for their excellent comprehensive performance.To optimize quality control of TiAlN coatings for cutting tools,a multi-scale simulation approach is proposed that encompasses the microstructure evolution of coatings considering the entire preparation and service lifecycle of PVD TiAlN coatings.This scheme employs phase-field simulation to capture the essential microstructure of the PVD-prepared TiAlN coatings.Moreover,cutting simulation is used to determine the service temperature experienced during cutting processes at varying rates.Cahn-Hilliard modeling is finally utilized to consume the microstructure and service condition data to acquaint the microstructure evolution of TiAlN coatings throughout the cutting processes.This methodology effectively establishes a correlation between service temperature and its impact on the microstructure evolution of TiAlN coatings.It is expected that the present multi-scale numerical simulation approach will provide innovative strategies for assisting property design and lifespan prediction of TiAlN coatings.
基金King Fahd University of Petroleum&Minerals for the provided support。
文摘研究在医用Ti6Al4V合金上采用阴极电弧蒸发沉积制备的纳米晶TiAlN涂层的表面特性和体外腐蚀性能。采用XRD和FE-SEM对其结构和表面形貌进行分析,采用显微压痕法表征其表面的显微硬度,在模拟体液和人工唾液中进行体外腐蚀实验。结果表明:与无涂层合金相比,沉积TiAlN涂层后合金的表面硬度提高,为44.4 GPa,弹性模量为419.9 GPa,塑性变形能力增强,润湿角由(70.61±1.25)°增大到(86.27±2.2)°。生物腐蚀实验表明,沉积TiAlN涂层后,Ti6Al4V合金的腐蚀电位显著正移约150 m V,腐蚀电流密度显著降低约一个数量级,电荷转移电阻提高,证明合金的耐腐蚀性提高。与无涂层的合金相比,沉积TiAlN涂层后合金的表面性能、力学性能和耐腐蚀性能均有所提高。