Laser cladding Al-Si/Al2O3-TiO2 composite coatings on AZ31B magnesium alloy

Zeqin Cui; Hongwei Yang; Wenxian Wang; Hongliang Wu; Bingshe Xu

doi:10.1007/s11595-012-0597-x

Journal of Wuhan University of Technology Materials Science Edition ›› 2012, Vol. 27 ›› Issue (6) : 1042 -1047. DOI: 10.1007/s11595-012-0597-x

Article

Laser cladding Al-Si/Al₂O₃-TiO₂ composite coatings on AZ31B magnesium alloy

Zeqin Cui ¹^,²
, Hongwei Yang ¹
, Wenxian Wang ¹^,²^,^{^c}
, Hongliang Wu ¹
, Bingshe Xu ¹^,²

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Abstract

To improve the wear resistance and corrosion resistance of magnesium alloys, a 5 kW continuous wave CO₂ laser was used to investigate the laser surface cladding on AZ31B magnesium alloys with Al-Si/Al₂O₃ -TiO₂ composite powders. A detailed microstructure, chemical composition, and phase analysis of the composite coatings were studied by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The laser cladding shows good metallurgical bonding with the substrate. The composite coatings are composed of Mg₁₇Al₁₂, Al₃Mg₂, Mg₂Si, Al₂O₃, and TiO₂ phases. Compared to the average microhardness (50HV_0.05) of the AZ31B substrate, that of the composite coatings (230HV_0.05) is improved significantly. The wear resistances of the surface layers were evaluated in detail. The results demonstrate that the wear resistances of the laser surface-modified samples are considerably improved compared to the substrate. It also show that the composite coatings exhibit better corrosion resistance than that of the substrate in 3.5wt% NaCl solution.

Keywords

AZ31B magnesium alloy / laser cladding / Al-Si/Al₂O₃-TiO₂ composite coating / wear resistance / corrosion resistance

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Zeqin Cui, Hongwei Yang, Wenxian Wang, Hongliang Wu, Bingshe Xu. Laser cladding Al-Si/Al₂O₃-TiO₂ composite coatings on AZ31B magnesium alloy. Journal of Wuhan University of Technology Materials Science Edition, 2012, 27(6): 1042-1047 DOI:10.1007/s11595-012-0597-x

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References

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[1]	Sorin I., Pierre S., Dominique G., . Magnesium Alloys Laser (Nd: YAG) Cladding and Alloying with Side Injection of Aluminium Powder[J]. Applied Surface Science, 2004, 225(1–4): 124-134.

[2]	Cao X., Jahazi M., Immarigeon J.P., . A Review of Laser Welding Techniques for Magnesium Alloys[J]. Journal of Materials Processing Technology, 2006, 171(2): 188-204.

[3]	Gray J.E., Luan B. Protective Coatings on Magnesium and Its Alloys — A Critical Review[J]. Journal of Alloys and Compounds, 2002, 336(1–2): 88-113.

[4]	Abbas G., Li L., Ghazanfar U., . Effect of High Power Diode Laser Surface Melting on Wear Resistance of Magnesium Alloys [J]. Wear, 2006, 260(1–2): 175-180.

[5]	Yue T.M., Li T. Laser Cladding of Ni/Cu/Al Functionally Graded Coating on Magnesium Substrate[J]. Surface and Coatings Technology, 2008, 202(13): 3 043-3 049.

[6]	Wang C.S., Chen Y.Z., Li T., . Composition Design and Laser Cladding of Ni-Zr-Al Alloy Coating on the Magnesium Surface[J]. Applied Surface Science, 2009, 256(5): 1 609-1 613.

[7]	Dutta Majumdar J., Manna I. Mechanical Properties of a Laser-surface-alloyed Magnesium-based Alloy (AZ91) with Nickel[J]. Scripta Materialia, 2010, 62(8): 579-581.

[8]	Mei Z., Guo L.F., Yue T.M. The Effect of Laser Cladding on the Corrosion Resistance of Magnesium ZK60/SiC Composite[J]. Journal of Materials Processing Technology, 2005, 161(3): 462-466.

[9]	Wang A.H., Yue T.M. YAG Laser Cladding of an Al-Si Alloy onto an Mg/SiC Composite for the Improvement of Corrosion Resistance[J]. Composites Science and Technology, 2001, 61: 1 549-1 554.

[10]	Dutta Majumdar J., Ramesh Chandra B., Mordike B.L., . Laser Surface Engineering of a Magnesium Alloy with Al+Al₂O₃[J]. Surface and Coatings Technology, 2004, 179(2–3): 297-305.

[11]	Zheng B.J., Chen X.M., Lian J.S. Microstructure and Wear Property of Laser Cladding Al+SiC Powders on AZ91D Magnesium Alloy [J]. Optics and Lasers in Engineering, 2010, 48(5): 526-532.

[12]	Liu Y.H., Guo Z.X., Yang Y., . Laser (a pulsed Nd:YAG) Cladding of AZ91D Magnesium Alloy with Al and Al₂O₃ Powders[J]. Applied Surface Science, 2006, 253: 1 722-1 728.

[13]	Yao J., Sun G.P., Wang H.Y., . Laser (Nd:YAG) Cladding of AZ91D Magnesium Alloys with Al+Si+Al₂O₃[J]. Journal of Alloys and Compounds, 2006, 407(1–2): 201-207.

[14]	Huang K.J., Yan L., WANG C.S., . Wear and Corrosion Properties of Laser Cladded Cu₄₇Ti₃₄Zr₁₁Ni₈/SiC Amorphous Composite Coatings on AZ91D Magnesium Alloy [J]. Transactions of Nonferrous Metals Society of China, 2010, 20(7): 1 351-1 355.

[15]	Volovitch P., Masse J.E., Fabre A., . Microstructure and Corrosion Resistance of Magnesium Alloy ZE41 with Laser Surface Dladding by Al-Si Powder[J]. Surface and Coatings Technology, 2008, 202(20): 4 901-4 914.

[16]	Yang Y., Wu H. Improving the Wear Resistance of AZ91D Magnesium Alloys by Laser Cladding with Al-Si Powders[J]. Materials Letters, 2009, 63(1): 19-21.

[17]	Józef I. Surface Remelting Treatment of Plasma-sprayed Al₂O₃+13wt% TiO₂ Coatings[J]. Surface and Coatings Technology, 2006, 201(6): 3 443-3 451.

[18]	Wang A.H., Tao Z.Y., Zhu B.D., . Laser Modification of Plasma-Sprayed Al₂O₃-13 wt% TiO₂ Coatings on a Low Carbon Steel[J]. Surface and Coatings Technology, 1992, 52(2): 141-144.

[19]	Li C.G., Wang Y., Guo L.X., . Laser Remelting of Plasma-sprayed Conventional and Nanostructured Al₂O₃-13wt%TiO₂ Coatings on Titanium Alloy[J]. Journal of Alloys and Compounds, 2010, 506(1): 356-363.