Microstructure and corrosion resistance of Al2CrFeCoCuNixTi high entropy alloy coatings prepared by laser cladding

被引：0

作者：

Qiu X. ^{[1
,2
,3
]}

Wu M. ^{[1
]}

Qi Y. ^{[3
]}

Liu C. ^{[4
]}

Zhang Y. ^{[5
]}

Huang C. ^{[2
]}

机构：

[1] Innovation and Practice Base for Postdoctors, Sichuan College of Architectural Technology, Deyang

[2] School of Aeronautics & Astronautics, Sichuan University, Chengdu

[3] Department of Materials Engineering, Sichuan College of Architectural Technology, Deyang

[4] Department of Surveying and Mapping Engineering, Sichuan College of Architectural Technology, Deyang

[5] School of Material Science and Engineering, Xi’an University of Technology, Xi'an

来源：

Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2018年 / 47卷 / 07期

关键词：

Al[!sub]2[!/sub]CrFeCoCuNi[!sub]x[!/sub]Ti; Corrosion resistance; High entropy alloys; Laser cladding; Microstructure;

D O I：

10.3788/IRLA201847.0706008

中图分类号：

学科分类号：

摘要：

The Al2CrFeCoCuNixTi high entropy alloy coating was prepared by laser cladding on Q235 steel surface. The microstructure of Al2CrFeCoCuNixTi high entropy alloy coatings were analyzed, and the corrosion resistance of Al2CrFeCoCuNixTi high entropy alloy coatings in 0.5 mol/L HNO3 solution and 0.5 mol/L HCl solution were tested. The experimental results show that the Al2CrFeCoCuNixTi high entropy alloy coating can be divided into cladding zone, bonding zone and heat affected zone. The microstructure of cladding zone is mainly composed of equiaxed grain, with micron-grade particles distributed on it, the phase structure of Ni1.0 high entropy alloy coating was simple for FCC and BCC structure. Due to the passivation effect of Cr and Ni elements and formation of Al2O3 and Al2O3•H2O films by Al element, the Al2CrFeCoCuNixTi high entropy alloy coating exhibits good corrosion resistance in 0.5 mol/L HNO3 solution and 0.5 mol/L HCl solution. Compared with Q235 steel, the corrosion current density decreases 1 -2 orders of magnitude. Pitting corrosion appears because of Cl - in 0.5 mol/L HCl solution can penetrate the passive film on the Ni0.5 high entropy alloy coating surface. © 2018, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

引用

共 17 条

[1]

Yeh J.W., Chang S.Y., Hong Y.D., Et al., Anomalous decrease in X-ray diffraction intensities of Cu-Ni-Al-Co-Cr-Fe-Si alloy systems with multi-principal elements, Materials Chemistry and Physics, 103, pp. 41-46, (2007)

[2]

Liu S., Huang W., Microstructure and mechanical performance of AlCrCoNiSix high-entropy alloys, Journal of Materials Engineering, 40, 1, pp. 5-8, (2012)

[3]

Zhang A., Liang H., Li Y., Property of A1CrCoFeNiMoTi0. 75Si0.25 high-entropy alloy coating tool prepared by laser cladding, China Surface Engineering, 26, 4, pp. 27-31, (2013)

[4]

An X., Liu Q., Zheng B., Microstructure and properties of laser cladding high entropy alloy MoFeCrTiWAlxSiy coating, Infrared and Laser Engineering, 43, 4, pp. 1140-1144, (2014)

[5]

Hu Z.H., Zhan Y.Z., Zhang G.H., Effect of rare earth Y addition on the microstructure and mechanical properties of high entropy AlCoCrCuNiTi alloys, Materials and Design, 31, pp. 1599-1602, (2010)

[6]

Tang Q., Liao X., Dai P., Microstructure evolution of Al0.3CoCrFeNi high-entropy alloy during high-pressure torsion, Journal of Materials Engineering, 43, 12, pp. 45-51, (2015)

[7]

Hsu C.Y., Sheu T.S., Yeh J.W., Et al., Effect of iron content on wear behavior of AlCoCrFexMo0.5Ni high-entropy alloys, Wear, 268, pp. 653-659, (2009)

[8]

Shun T.T., Hung C.H., Lee C.F., The effects of secondary elemental Mo or Ti addition in Al0.3CoCrFeNi high-entropy alloy on age hardening at 700℃, Journal of Alloys and Compounds, 495, pp. 55-58, (2010)

[9]

Hsu Y.J., Chiang W.C., Corrosion behavior of FeCoNiCrCux high-entropy alloys in 3.5% sodium chloride solution, Materials Chemistry and Physics, 92, pp. 112-117, (2005)

[10]

Xie H., Liu G., Guo J., Effect of Zr addition on microstructure and corrosion properties of AlFeCrCoCuZrx high-entropy alloys, Journal of Materials Engineering, 44, 6, pp. 44-49, (2016)

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