张有凤,李忠文,李崇桂,李军,于治水

• 1:上海工程技术大学材料工程学院

摘要(Abstract)：

采用Ti和B的混合粉末在Ti-6Al-4V基体表面激光熔覆制备TiB/Ti复合涂层。通过XRD物相分析、形貌观察和硬度测试等方法研究了激光扫描速度2 mm/s时不同激光扫描功率下原位合成的TiB/Ti复合涂层的相结构、显微结构和硬度。不同功率下制备的涂层中只有α-Ti和TiB相;扫描功率为3000 W和3500 W下激光熔覆层与基体结合较好;随着激光扫描功率的增加,熔覆层的平均硬度提高;扫描功率为3000 W下制备的涂层硬度分布较均匀,其硬度值较基体提高了2~3倍,平均硬度值约为1000 HV。

关键词(KeyWords)： 激光熔覆;复合涂层;显微组织;TiB

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51402189)

作者(Author): 张有凤,李忠文,李崇桂,李军,于治水

DOI: 10.13289/j.issn.1009-6264.2016.05.030

参考文献(References)：

• [1]斯松华,袁晓敏,徐锟,等.激光功率对激光熔覆WCP/Ni基金属陶瓷涂层的组织与磨损性能的影响[J].中国腐蚀与防护学报,2004,24(3):183-187.SI Song-hua,YUAN Xiao-min,XU Kun,et al.Effect of laser power on microstructures and wear properties of WCp/Ni metal ceramics coating[J].Journal of Chinese Society for Corrosion and Protection,2004,24(3):183-187.
• [2]菅丽娜,张凌云,于荣莉,等.钛合金表面激光熔敷Cr13Ni5Si2基金属硅化物涂层组织与耐磨性[J].稀有金属材料与工程,2005,34(6):936-939.JIAN Li-na,ZHANG Ling-yun,YU Rong-li,et al.Microstructure and wear resistance of laser clad Cr13Ni5Si2-based metal silicide coating on titanium alloy[J].Rare Metal Materials and Engineering,2005,34(6):936-939.
• [3]Fan Z,Miodownik A P,Chandrasekaran L,et al.The young moduli of in-situ Ti-Ti B composites obtained by rapid solidification processing[J].Journal of Material Science,1994,29(4):1127-1134.
• [4]Kumari S,Prasad N E,Ravi Chandran K S,et al.High temperature deformation behavior of Ti-Ti Bw in-situ metal-matrix composites[J].Journal of the Minerals Metals and Materials Society,2004,56(5):51-55.
• [5]高文理.Ti-Al-B合金中硼化物组成及形貌变化规律[D].哈尔滨:哈尔滨工业大学,2003:21-22.GAO Wen-li.Change rule of the composition and morphology of boride in Ti-Al-B alloy[D].Harbin:Harbin Institute of Technology.2003:21-22.
• [6]Ni D R,Geng L,Zhang J,et al.Effect of B4C particle size on microstructure of in situ titanium matrix composites prepared by reactive processing of TiB4C system[J].Scripta Materialia,2006,55(5):429-432.
• [7]Chandrasekar P,Balusamy V,Ravi Chandranb K S,et al.Laser surface hardening of titanium-titanium boride(Ti-Ti B)metal matrix composite[J].Scripta Materialia,2007,56(7):641-644.
• [8]Wang F,Mei J,Wu X H.Direct laser fabrication of Ti6Al4V/Ti B[J].Journal of Materials Processing Technology,2008,195(1/3):321-326.
• [9]Hang L J,Geng L,Li A B,et al.In situ Ti Bw/Ti-6Al-4V composites with novel reinforcement architecture fabricated by reaction hot pressing[J].Scripta Materialia,2009,60(11):996-999.
• [10]Genc A,Banerjee R,Hill D,et al.Structure of Ti B precipitates in laser deposited in situ,Ti-6Al-4V-Ti B composites[J].Materials Letters,2006,60(7):859-863.

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