中国激光, 2010, 37 (8): 2086, 网络出版: 2010-08-13   

Ti对Co基合金激光熔覆层组织与性能的影响

Effect of Ti on Microstructure and Properties of Co-Based Alloy Coating by Laser Cladding
作者单位
1 贵州冶金化工研究所,贵州 贵阳 550002
2 贵州永红航空机械有限责任公司,贵州 贵阳 550009
摘要
为了研究Ti对Co基合金涂层组织及性能的影响,采用5 kW CO2激光器在低碳钢表面熔覆Co基合金涂层及Ti/Co基合金复合涂层,对比研究两种涂层的组织、显微硬度以及滑动磨损性能。结果表明,Co基合金涂层主要组成相为γ-Co,ε-Co,Cr23C6等;Ti/Co基合金复合涂层组成γ-Co,ε-Co,Cr23C6,TiC等。Co基合金涂层由发达的γ-Co枝晶和其间共晶组织所组成,Ti/Co基合金涂层典型组织为等轴固溶体以及细小的共晶组织;研究发现原位生成的TiC对熔覆层的组织有显著的改善作用,促使其由树枝晶向等轴晶转化,从而细化组织。
Abstract
In order to study the effect of Ti on microstructure and properties of Co-based alloy coating,Co-based alloy and Ti/Co-based alloy composite coatings are obtained on low carbon steel surface by 5 kW CO2 laser. Microstructure,microhardness,and sliding wear resistance of the coatings are studied. The results show that Co-based alloy coating consists of γ-Co,ε-Co,Cr23C6 and Ti/Co-based alloy composite coating consists of γ-Co,ε-Co,Cr23C6,TiC and so on. The Co-based alloy coating is made up of flourishing γ-Co dendrite and eutectic structure. Equiaxed solid solution and fine eutectic structure are observed in the Ti/Co-based alloy composite coating. The influence of in-situ synthesis TiC particles on microstructure of coating is prominent. And the microstructure is refined by changing it from dendrited to equiaxed grain by TiC.
参考文献

[1] . Navas,A.Conde,B. J. Ferandez. Laser coatings to improve wear resistance of mould steel[J]. Surface and Coating Technol., 2005, 194(1): 136-142.

[2] 牛薪,晁明举,周笑薇 等. 激光熔覆原位生成B4C颗粒增强镍基复合涂层的研究[J]. 中国激光,2005,32(11):1583-1588

    Niu Xin,Chao Mingju,Zhou Xiaowei et al.. Research on in-situ synthesis of B4C particulate reinforced Ni-based composite coatings by laser cladding [J]. Chinese J. Lasers,2005,32(11):1583-1588

[3] 敬晓定,晁明举,孙海勤 等. 原位生长Cr3C2-CrB复合增强镍基激光熔覆层研究 [J].中国激光,2009,36(1):231-237

    Jing Xiaoding,Chao Mingju,Sun Haiqin et al.. Investigation on in-situ synthesis of Cr3C2-CrB reinforced Ni-based composite coatings by laser cladding [J].Chinese J. Lasers,2009,36(1):231-237

[4] 胡汉起. 金属凝固原理[M]. 北京:机械工业出版社,2007. 61-63

    Hu Hanqi. Principle of Metal Solidification[M]. Beijing:China Machine Press,2007. 61-63

[5] 梁京,高明媛,刘常升 等. 激光诱导原位反应制备钛基复合涂层的工艺研究[J].中国激光,2009,36(12):3272-3276

    Liang Jing,Gao Mingyuan,Liu Changsheng et al.. Laser induced in-situ formation of titanium composite coatings [J].Chinese J. Lasers,2009,36(12):3272-3276

[6] . D.Hunt. Pattern formation in solidification[J]. Science and Technology of Advanced, 2001, 2(1): 147-155.

[7] A. E.Ares ,S. F. Gueijman,C. E.Schvezov. Semi-empirical modelling for columnar equiaxed growth of alloys [J]. J. Crystal Growth,2002,241(1-2):235-240

[8] 张维平,马海波,陈天运 等. 激光熔覆原位生成硬质陶瓷颗粒钴基复合涂层 [J].中国激光,2009,36(12):3277-3281

    Zhang Weiping,Ma Haibo,Chen Tianyun et al.. In-situ synthesis of ceramic particle reinforced Co-based alloy composite coating by laser cladding [J]. Chinese J. Lasers,2009,36(12):3277-3281

[9] . MC碳化物非平衡凝固液/固界面结构及生长机制[J]. 金属学报, 2003, 39(3): 254-258.

    . Liquid/solid interface structure and growth mechanism of MC carbide under non-equilibrium solidification conditions[J]. Acta Metallrugica Sinica, 2003, 39(3): 254-258.

[10] 梁英教,车荫昌. 无机化合物热力学数据手册[M]. 沈阳:东北大学出版社,1994. 60-81

    Liang Yingjiao,Che Yinchang. Handbook of Thermodynamic Data of Inorganic Compounds[M].Shenyang:Northeastern University Press,1994. 60-81

[11] L. Lü,M. O. Lai,J. L. Yeo. Insitu synthesis of TiC composite for structural application [J]. Composite Structure,1999,47(1-4):613-618

[12] 李超. 金属学原理[M]. 哈尔滨:哈尔滨工业大学出版社,1996. 165-189

    Li Chao. Principles of Metal [M].Harbin:Harbin Institute of Technology Press,1996. 165-189

[13] . . A general mechanism of polycrystalline growth[J]. Nature Materials, 2004, 3(9): 645-650.

李志远, 赵伟毅, 古文全, 何灏, 张剑波, 聂登攀. Ti对Co基合金激光熔覆层组织与性能的影响[J]. 中国激光, 2010, 37(8): 2086. Li Zhiyuan, Zhao Weiyi, Gu Wenquan, He Hao, Zhang Jianbo, Nie Dengpan. Effect of Ti on Microstructure and Properties of Co-Based Alloy Coating by Laser Cladding[J]. Chinese Journal of Lasers, 2010, 37(8): 2086.

本文已被 4 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!