Microstructure and High-temperature Friction Wear Properties of Laser-cladded Fe20Co20Cr20Ni25AlxTi(15-x) High-entropy Alloy Coatings

Yarong Chen; Xiong Yang; Yaoguang Wei; Qiaoling Wang; Yue Yan; Guangqi Ran; Guangpei Xu; Sainan Chen; Shimei Tao; Yifan Zhang; Ting Wen

doi:10.6919/ICJE.202605_12(5).0014

Authors

Yarong Chen
Xiong Yang
Yaoguang Wei
Qiaoling Wang
Yue Yan
Guangqi Ran
Guangpei Xu
Sainan Chen
Shimei Tao
Yifan Zhang
Ting Wen

DOI:

https://doi.org/10.6919/ICJE.202605_12(5).0014

Keywords:

High-speed Train Brake Disc; Laser Cladding; High-entropy Alloy; High-temperature Friction Wear.

Abstract

High-speed train brake discs at 400 km/h are coated with Fe₂₀Co₂₀Cr₂₀Ni₂₅Al_xTi_(15-x) high-entropy alloy to improve the service performance of the discs and ensure train safety. In this study, Fe₂₀Co₂₀Cr₂₀Ni₂₅Al_xTi_(15-x)high-entropy alloy coating was successfully prepared on 24CrNiMo, a steel-based material for brake discs, and its microstructure and hardness, high-temperature frictional wear properties, and mechanism were investigated. It was discovered that the phase structure of the Fe₂₀Co₂₀Cr₂₀Ni₂₅Al_xTi_(15-x) high-entropy alloy cladding layer is the face-centered cubic phase, and the microstructure of the clad layer is flat crystal, columnar crystal, dendritic crystal and equiaxed crystal from the bottom to the top in order. The average friction coefficient of Fe₂₀Co₂₀Cr₂₀Ni₂₅Al_xTi_(15-x)high-entropy alloy is between 0.3 and 0.6, which is lower than that of the substrate. The room temperature and high-temperature wear rates of Fe₂₀Co₂₀Cr₂₀Ni₂₅Al₅Ti₁₀ were reduced by 51.1% and 74.2%, respectively, compared to the substrate, with enhanced wear performance. The room-temperature wear mechanism of Fe₂₀Co₂₀Cr₂₀Ni₂₅Al_xTi_(15-x) was all abrasive wear, and the high-temperature wear mechanisms were oxidation wear, adhesive wear and abrasive wear.

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References

[1] Xiao, Y.; Zhang, Z.; Yao, P.; Fan, K.; Zhou, H.; Gong, T.; Zhao, L.; Deng, M. Mechanical and Tribological Behaviors of Copper Metal Matrix Composites for Brake Pads Used in High-Speed Trains. Tribology International 2018, 119, 585–592.

[2] Lu, C.; Ren, Z.; Ma, C. Study on the Technologies Development Trend of High Speed EMUs. High-speed Railway 2023, 1, 1–5.

[3] Yoo, J.J.; Byun, K.S. Development of Sensor for the Real-Time Monitoring of Brake Pad Wear and Brake Disc Temperature in High Temperature. International Journal of Automotive Technology 2023, 24, 1603–1613, doi:10.1007/s12239-023-0129-z.

[4] Xie, X.; Li, Z.; Domblesky, J.P.; Yang, Z.; Liu, X.; Li, W.; Han, J. Analysis of Deep Crack Formation and Propagation in Railway Brake Discs. Engineering Failure Analysis 2021, 128, 105600, doi:10.1016/j.engfailanal.2021.105600.

[5] Zhu, H.; Lian, S.; Jin, M.; Wang, Y.; Yang, S.; Lu, Q.; Tao, Z.; Xiao, Q. Review of Research on the Influence of Vibration and Thermal Fatigue Crack of Brake Disc on Rail Vehicles. Engineering Failure Analysis 2023, 153, 107603, doi:10.1016/j.engfailanal.2023.107603.

[6] Zhao, Y.; Chen, H. Strength-Toughness Design and Braking Behavior Study of Coatings for 400 Km/H High-Speed Train Brake Discs; Elsevier BV, 2025.

[7] Wu, Y.; Zou, G.; Liu, Y.; A, Z.; Zhao, W.; Wang, W.; Xue, J.; Zhang, Y.; Jia, Q.; Chen, H. Temperature Dependence of the Tensile and Thermal Fatigue Cracking Properties of Laser-Deposited Cobalt-Based Coatings for Brake Disc Application. SSRN Electronic Journal 2022, doi:10.2139/ssrn.4177903.

[8] Shi, X.; Wen, D.; Wang, S.; Wang, G.; Zhang, M.; Li, J.; Xue, C. Investigation on Friction and Wear Performance of Laser Cladding Ni-Based Alloy Coating on Brake Disc. Optik 2021, 242, 167227, doi:10.1016/j.ijleo.2021.167227. Hu, H.

[9] Tang, G.; Cheng, Z.; Pan, Y.; Huang, Z.; Ding, W.; Liang, Z. Co-Cr3c2 Coating Incorporating Grain Refinement and Dislocation Density Gradient to Enhance Wear Resistance of 24crnimo Steel; Elsevier BV, 2024;

[10] Yeh, J. w.; Chen, S. k.; Lin, S. j.; Gan, J. y.; Chin, T. s.; Shun, T. t.; Tsau, C. h.; Chang, S. y. Nanostructured High‐Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes. Advanced Engineering Materials 2004, 6, 299–30.

[11] Cantor, B.; Chang, I.T.H.; Knight, P.; Vincent, A.J.B. Microstructural Development in Equiatomic Multicomponent Alloys[J]. Materials Science and Engineering: A 2004, 375–377, 213–218.

[12] Wu, H.; Zhang, S.; Wu, C.L.; Zhang, C.H.; Sun, X.Y.; Bai, X.L. Electrochemical Corrosion Behavior in Sulfuric Acid Solution and Dry Sliding Friction and Wear Properties of Laser-Cladded CoCrFeNiNb High Entropy Alloy Coatings[J]. Surface and Coatings Technology 2023, 460, 12942.

[13] Lu, Y.; Peng, Y.; Chang, X.; Xiu, W.; Shi, Z. Insights on Microstructure and Tribological Properties of FeCoCrNiMo HEA Reinforced CuSn Coatings by Laser Cladding for Monorail Brakes. Wear 2025, 580–581, 206244, doi:10.1016/j.wear.2025.206244.

[14] Huang, Z.; Lu, X.; Yan, M.; Fu, Y. Evaluating stability, elastic and thermodynamic properties of AlTiNiCuCox (x = 0.5,0.75,1,1.25,1.5) high entropy alloys[J]. Materials Research Express 2019, 6(12), 126581. doi:10.1088/2053-1591/ab48a8.

[15] Praveen S, Kim H S. High‐Entropy Alloys: Potential Candidates for High‐Temperature Applications – An Overview[J]. Advanced Engineering Materials, 2018, 20.

[16] Dewangan, S.K.; Mangish, A.; Kumar, S.; Sharma, A.; Ahn, B.; Kumar, V. A Review on High-Temperature Applicability: A Milestone for High Entropy Alloys[J]. Engineering Science and Technology, an International Journal 2022, 35.

[17] Miracle D B, Senkov O N. A critical review of high entropy alloys and related concepts[J]. Acta Materialia, 2017, 122: 448-511.

[18] George E P, Curtin W A, Tasan C C. High entropy alloys: A focused review of mechanical properties and deformation mechanisms[J]. Acta Materialia, 2020, 188: 435-474.

[19] Wang, Z. G.; Zhou, W.; Fu, L. M.; Wang, J. F.; Luo, R. C.; Han, X. C.; et al. Effect of coherent L12 nanoprecipitates on the tensile behavior of a fcc-based high-entropy alloy[J]. Materials Science and Engineering: A 2017, 696, 503–510.

[20] Ding, Z. Y.; Cao, B. X.; Luan, J. H.; Jiao, Z. B. Synergistic effects of Al and Ti on the oxidation behaviour and mechanical properties of L12-strengthened FeCoCrNi high-entropy alloys[J]. Corrosion Science 2021, 184, 109365.

[21] He, J.Y.; Wang, H.; Huang, H.L.; Xu, X.D.; Chen, M.W.; Wu, Y.; Liu, X.J.; Nieh, T.G.; An, K.; Lu, Z.P. A Precipitation-Hardened High-Entropy Alloy with Outstanding Tensile Properties[J]. Acta Materialia 2016, 102, 187–196.

[22] Yang, Y.-C.; Liu, C.; Lin, C.-Y.; Xia, Z. The Effect of Local Atomic Configuration in High-Entropy Alloys on the Dislocation Behaviors and Mechanical Properties[J]. Materials Science and Engineering: A 2021, 815, 141253.

[23] Xu, H.; Zhang, M.; Zhang, G.; Li, G.; Li, G. Microstructure and Mechanical Property of Al,Ti Co-Adding L21-Strengthened NiCrFe-Based HEAs[J]. Materials Characterization 2024, 207, 113516.

[24] Guo, Y.; Yang, F.; Lu, B.; Qiu, H.; Zhu, J.; Wang, D.; Yan, X.; Qiu, Z.; Yin, S.; Liu, M. Competitive Relationship between the FCC + BCC Dual Phases in the Wear Mechanism of Laser Cladding FeCoCrNiAl0.5Ti0.5 HEAs Coating[J]. Surface and Coatings Technology 2024, 493, 131315.

[25] Garrido, B.; Dosta, S.; Cano, I.G. Bioactive Glass Coatings Obtained by Thermal Spray: Current Status and Future Challenges[J]. Boletín de la Sociedad Española de Cerámica y Vidrio 2022, 61, 516–530.

[26] Yang, W.; Chen, G.; Wang, P.; Qiao, J.; Hu, F.; Liu, S.; Zhang, Q.; Hussain, M.; Dong, R.; Wu, G. Enhanced Thermal Conductivity in Diamond/Aluminum Composites with Tungsten Coatings on Diamond Particles Prepared by Magnetron Sputtering Method[J]. Journal of Alloys and Compounds 2017, 726, 623–631.

[27] Arif, Z.U.; Khalid, M.Y.; ur Rehman, E.; Ullah, S.; Atif, M.; Tariq, A. A Review on Laser Cladding of High-Entropy Alloys, Their Recent Trends and Potential Applications[J]. Journal of Manufacturing Processes 2021, 68, 225–273.

[28] Das, A.K. A Review on Coating with High Entropy Alloy Developed by Laser Energy Based Surfacing Process[J]. Materials Today: Proceedings 2022, 52, 1551–1557.

[29] Wang, J.; Chen, Y.; Zhang, Y.; Dai, W.; Xu, Q.; Li, W.; Liu, Y. Corrosion and Slurry Erosion Wear Performances of Coaxial Direct Laser Deposited CoCrFeNiCu1-xMox High-Entropy Coatings by Modulating the Second-Phase Precipitation[J]. Materials & Design 2021, 212, 110277.

[30] Yang, J.; Bai, B.; Ke, H.; Cui, Z.; Liu, Z.; Zhou, Z.; Xu, H.; Xiao, J.; Liu, Q.; Li, H. Effect of Metallurgical Behavior on Microstructure and Properties of FeCrMoMn Coatings Prepared by High-Speed Laser Cladding. Optics & Laser Technology 2021, 144, 107431.

[31] Zhang J B, Li X, Zhang Y C, et al. Sluggish dendrite growth in an undercooled high entropy alloy[J]. Intermetallics, 2020, 119: 106714.

[32] Wang, J.; Chen, Y.; Zhang, Y.; Zhang, Y.; Li, J.; Liu, J.; Liu, Y.; Li, W. Microstructure evolution and acid corrosion behavior of CoCrFeNiCu1−xMox high-entropy alloy coatings fabricated by coaxial direct laser deposition[J]. Corrosion Science, 2022, 198: 110108.

[33] Wu, T.; Yang, C.; Yu, L.; Zheng, X.; Zhang, L.; Jiang, Y.; Xue, Y.; Lu, Y.; Luan, B. Microstructure Characterization and High-Temperature Wear Mechanism of High-Entropy Alloy Matrix Composite Coating Fabricated by Laser Cladding. Applied Surface Science 2024, 677, 161032, doi:10.1016/j.apsusc.2024.161032.

[34] Yu, D.T.; Wu, C.L.; Cui, X.X.; Zhao, X.B.; Zhang, S.; Zhang, C.H. Study on Microstructure, Mechanical Properties, Wear and Cavitation Erosion Resistance of FeCrNiTi0.3Al0.3 High Entropy Alloy Coatings by Laser Cladding[J]. Materials Today Communications 2025, 49, 113840.

[35] Lu, C.; Jiang, X.; Chen, X.; Mo, J. Experimental study on the evolution of friction and wear behaviours of railway friction block during temperature rise under extreme braking conditions[J]. Engineering Failure Analysis, 2022, 141: 106621.

[36] Nguyen, C.; Tieu, A.K.; Deng, G.; Wexler, D.; Tran, B.; Vo, T.D. Study of Wear and Friction Properties of a Co-Free CrFeNiAl0.4Ti0.2 High Entropy Alloy from 600 to 950 °C. Tribology International 2022, 169, 107453.

[37] Liang, C.; Wang, C.; Zhang, K.; Tan, H.; Liang, M.; Xie, Y.; Liu, W.; Yang, J.; Zhou, S. Mechanical and Tribological Properties of (FeCoNi)88-x(AlTi)12Mox High-Entropy Alloys. International Journal of Refractory Metals and Hard Materials 2022, 105, 105845.

[38] Xiao, Y.; Cheng, Y.; Shen, M.; Yao, P.; Du, J.; Ji, D.; Zhao, H.; Liu, S.; Hua, L. Friction and Wear Behavior of Copper Metal Matrix Composites at Temperatures up to 800 °C. Journal of Materials Research and Technology 2022, 19, 2050–206.

[39] Lin, G.; Cai, Z.; Dong, Y.; Wang, C.; Hu, J.; Zhang, P.; Gu, L. High-Temperature Oxidation Behavior of AlCoCrFeNi2.1 Eutectic High-Entropy Alloy: Microstructure Evolution and Microhardness. Materials Characterization 2024, 210, 113830.