Tribological Behavior of Ti₂AlNb Alloy by Surface Plasmas Carburized

Abstract:

In order to improve the wear resistance of Ti2AlNb orthorhombic alloy, the carburized coating has been successfully prepared on Ti₂AlNb alloy by double glow plasma technology. The microstructure, chemical composition and phase structure o f the carburized coating were analyzed by means of SEM, EDS and XRD. The Micro hardness of the alloy layer was measured, and the bond strength of carburized coating with substrate was also evaluated by scratch test. The tribological behaviors of layer were investigated by friction-wear test. The results show that a carburized layer is formed which is about 40μm and the content of C gradient decrease after double glow plasma carburizing, the Micro hardness of the layer is 1051 HV0.1 and the bond of the coating is 62N, the tribological behavior of layer is much better than matrix.

• Periodical: Advanced Materials Research (Volumes 482-484)
• Pages: 914-918
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.482-484.914
• Online since: February 2012
• Authors: Dan Yang Zhu, Wen Ping Liang, Qiang Miao, Kai Guo, Long Li
• Keywords: Double Glow Plasma Surface Carburizing, Microhardness, Ti₂AlNb Orthorhombic Alloy, Wear Resistance

References

[1] Banerjee D, Nandy T K. A new ordered orthorhombic phase in a Ti3Al-Nb alloy [J]. Acta Metal, 1988, 36(4): 871-882.

DOI: 10.1016/0001-6160(88)90141-1

[2] Germann L, Banerjee D, Guedou J Y, STRUDEL J L. Effect of composition on the mechanical properties of newly developed Ti2AlNb-based titanium aluminide [J]. Intermetallics, 2005, 13(9): 920-924.

DOI: 10.1016/j.intermet.2004.12.003

[3] Nandy T K, Banerjee D. Creep of the orthorhombic phase based on the intermetallic Ti2AlNb [J]. Intermetallics, 2000, 8(8): 915-928.

DOI: 10.1016/s0966-9795(00)00059-5

[4] Hongyan WU, Pingze ZHANG, Jiangliang LI, Shijian MA, Zhong XU. Microstructures and tribological properties of surface plasma chromising on Ti2AlNb-based alloy [J]. The Chinese Journal of Nonferrous Metals, 2007, 17(10): 1650-1660. (In Chinese)

[5] Wenping LIANG. Research on double glow plasma molybdenizing/chromizing on Ti2AiNb orthorhombic alloy and their properties [D]. Taiyuan; Taiyuan University of Technology, 2006. (In Chinese)

[6] Wenping LIANG, Zhong XU, Qiang MIAO. Study on Mo Diffusion in Double Glow Plasma Surface chromizing of Ti2AlNb [J], Tribology, 2007, 27(2): 121-125. (In Chinese)

[7] Qiang MIAO, Caie CUI, Junde PAN, Lianghui DUAN, Xiaoping LIU. Tribological behavior of magnesium alloy AZ91 coated with TiN/CrN by arc-glow plasma depositing [J]. Chinese Journal of Aeronautics, 2006, 19(3): 266-270.

DOI: 10.1016/s1000-9361(11)60355-5

[8] S.G. Warrier, S. Krishnamurtby, and P.R. Smith. Oxidation Protection of Ti-Aluminide Orthorhombic Alloys: An Engineered Multilayer Approach, Metal. Mater. Trans., 1998, 29(4), pp.1279-1288

DOI: 10.1007/s11661-998-0254-3

[9] R. Braun and C. Leyens. Protective Coatings on OrthorhombicTi2AlNb Alloys, Mater. High Temp., 2005, 22(3-4), pp.437-447

[10] Zhang W G, Wang C T, Liu W M. Tribological Behavior of Surface modified Layers on Ti Alloy. Tribology , 2003, 23(2) :91-94

[11] Zhang G H, Zhang P Z, Guo L N, et al. Testing Study Phase Structure and Brittleness of Titanium Alloys Carburizing Without Hydrogen. In: 5th International Symposium on Test and Measurement, 2003: 2390-2392

[12] Wei XU, Xiaoping LIU , Chaoli GUO. Wear Resistance of Plasma Carburization Treatment on TiAl Substrate [J], Hot Working Technology ,2005,9:51-52.(In Chinese)

[13] Shijian MA, Pingze ZHANG, Qiang MIAO. Structure and Performance of γ-TiAl Based Alloy after Hydrogen-free Double Glow Plasma Carburizing[J], Heat Treating Progress, 2005, 19(2): 139-146. (In Chinese)