毛邈,苏钰,蔡李,段志宇,李军

• 1:上海工程技术大学材料工程学院

摘要(Abstract)：

采用预置粉末的方式在钛合金Ti6Al4V表面激光熔覆纯Cu粉,利用热力学相图软件(Thermo-Calc)对Ti-Cu-Al-V合金体系进行平衡相图计算、根据平衡相图推测涂层中可能存在的相,运用DICTRA软件模拟计算纯Cu粉在Ti6Al4V表面凝固过程及元素扩散行为。结果表明,涂层主要存在相为Cu Ti2、Cu Ti3、Ti(Cu,Al)2、Al2Cu3,熔覆层主要组织为交错的树枝晶,熔覆层的显微硬度大大高于基体,耐磨性能显著提高,当激光功率P为2.2 k W时,熔覆层硬度、耐磨性能相对较优。

关键词(KeyWords)： 热力学计算;激光熔覆;Ti6Al4V;耐磨性;硬度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51301105,51471105);; 上海工程技术大学研究生创新项目(14KY0503)

作者(Author): 毛邈,苏钰,蔡李,段志宇,李军

DOI: 10.13289/j.issn.1009-6264.2016.01.036

参考文献(References)：

• [1]牛伟,孙荣禄.钛合金激光熔覆的研究现状与发展趋势[J].材料导报,2006,20(7):58-60.NIU Wei,SUN Rong-lu.Research progress and development on laser cladding on titanium alloys surface[J].Materials Review,2006,20(7):58-60.
• [2]Weng F,Chen C,Yu H.Research Status of laser cladding on titanium and its alloys:a review[J].Materials&Design,2014,58(0):412-425.
• [3]张永忠,金具涛,黄灿,等.钛合金表面激光熔覆原位钛基复合材料涂层[J].材料热处理学报,2010,31(3):121-124.ZHANG Yong-zhong,JIN Ju-tao,HUANG Can,et al.Laser clad in-situ titanium matrix composite coatings on a titanium alloy[J].Transactions of Materials and Heat Treatment,2010,31(3):121-124.
• [4]李春燕,寇生中,赵燕春,等.钛合金表面激光熔覆钴基合金层的组织及力学性能[J].材料热处理学报,2015,36(2):171-177.LI Chun-yan,KOU Sheng-zhong,ZHAO Yan-chun,et al.Microstructure and mechanical property of laser clad Co-based alloy coatings on titanium alloy[J].Transactions of Materials and Heat Treatment,2015,36(2):171-177.
• [5]黄灿.钛合金表面激光熔覆Ti Cr Al Si系多主元合金涂层的研究[D].北京:北京有色金属研究总院,2012.
• [6]武万良,李学伟.钛合金激光熔覆技术研究进展[J].稀有金属材料与工程,2006,35(6):850-854.WU Wan-liang,LI Xue-wei.Research progress in laser cladding titanium alloy[J].Rare Metal Materials and Engineering,2006,35(6):850-854.
• [7]宋建丽,李永堂,邓琦林,等.激光熔覆成形技术的研究进展[J].机械工程学报,2010,46(14):29-39.SONG Jian-li,LI Yong-tang,DENG Qi-lin,et al.Research progress of laser cladding forming technology[J].Journal of Mechanical Engineering,2010,46(14):29-39.
• [8]Huang C,Zhang Y,Shen J,et al.Thermal stability and oxidation resistance of laser clad tivcralsi high entropy alloy coatings on Ti-6Al-4V alloy[J].Surface and Coatings Technology,2011,206(6):1389-1395.
• [9]Andersson J,Helander T,Hglund L,et al.Thermo-calc and DICTRA,computational tools for materials science[J].Calphad,2002,26(2):273-312.
• [10]段志宇,苏钰,李军.钛合金激光熔覆纯铁粉的热力学与组织性能[J].上海工程技术大学学报,2013,27(2):132-136.DUAN Zhi-yu,SU Yu,LI Jun.Thermodynamics and structure performance of laser cladding pure Fe powder on Ti alloy[J].Journal of Shanghai University of Engineering Science,2013,27(2):132-136.
• [11]Li J,Chen C,Squartini T,et al.A Study on wear resistance and microcrack of the Ti3Al/Ti Al+Ti C ceramic layer deposited by laser cadding on Ti-6Al-4V Alloy[J].Applied Surface Science,2010,257(5):1550-1555.
• [12]龚佑品,鲁玮瑗,袁晓敏.激光熔Ti B2增强Co基合金涂层的组织与性能[J].激光技术,2008,32(2):122-124.GONG You-pin,LU Wei-yuan,YUAN Xiao-min.Microstructure and properties of Ti B2reinforced Co based alloy coating by laser cladding[J].Laser Technology,2008,32(2):122-124.
• [13]Canale P,Servant C.Thermodynamic assessment of the Cu-Ti system taking into account the new stable phase Cu Ti3[J].Zeitschrift Für Metallkunde,2002,93(4):273-276.

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