激光熔覆制备BCC/FCC梯度涂层及其磨损和拉伸性能的研究

doi:10.11896/cldb.24120023

Abstract
Figure/Table
References
Related Citation (15)

Download:

Full Text ( PDF ) (53971KB)
Export: BibTeX | EndNote (RIS)

Abstract In the field of alloy materials, achieving a simultaneous enhancement of strength and toughness is an important topic. This study selected CoCrFeNi and AlCoCrFeNi two heterogeneous high-entropy alloy materials, and successfully prepared a new type of high-entropy alloy gradient coating with an outer hard and inner tough structure through careful structural design and laser process optimization. The coating had an in-situ formed dual-phase interface layer, with its microstructure transitioning from a single-phase body-centered cubic (BCC) at the top, to a BCC/face-centered cubic (FCC) dual-phase in the middle, and finally to a single-phase FCC at the bottom, forming a unique phase gradient structure. Hardness tests showed that the hardness of the coating decreased from 530HV_{0. 2} at the top to 350HV_{0. 2} in the middle, and then to 200HV_{0. 2} at the bottom, which was consistent with the trend of decreasing BCC phase content. Friction performance tests indicated that this gradient coating exhibited excellent wear resistance, with a friction coefficient of 0. 51 and a wear rate as low as 4. 8×10^-5 mm³/(N·m), with the primary wear mechanism being adhesive wear. Additionally, tensile tests confirmed that the coating had excellent tensile strength and also good ductility. These excellent mechanical properties could be attributed to the formation of the dual-phase interface layer within the coating, which effectively alleviated the structural and property differences between the high-hardness layer and the high-toughness layer, reduced stress concentration, and thereby stabilized the overall structure of the coating. In summary, this study not only provides new methods and theories for the development of new high-entropy alloy coatings with comprehensive strength and toughness but also can be used to guide the development and design of similar high-entropy alloy gradient coating structures, which is of significant application value.

Key words： laser cladding AlCoCrFeNi gradient coating wear resistance tensile property

Published: 25 December 2025 Online: 2025-12-17

CLC number:

TG115

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	DONG Zhaoshuai
	LI Xinmei
	JIA Liming
	JIA Haiyang
	YAN Zhiqi
	WU Liping

Cite this article:

DONG Zhaoshuai,LI Xinmei,JIA Liming, et al. Study on Wear and Tensile Properties of Laser Cladded BCC/FCC Gradient Coatings[J]. Materials Reports, 2025, 39(24): 24120023-7.

URL:

https://www.mater-rep.com/EN/10.11896/cldb.24120023 OR https://www.mater-rep.com/EN/Y2025/V39/I24/24120023

1 Yeh J W, Lin S J, Chin T S, et al. Metallurgical and Materials Transactions A, 2004, 35, 2533.
2 Yeh J W, Chen S K, Lin S J, et al. Advanced Engineering Materials, 2004, 6(5), 299.
3 Chen W, Li X. Journal of Materials Research and Technology, 2024, 31, 1215.
4 Zhang X, Cui X, Jin G, et al. Journal of Alloys and Compounds, 2022, 891, 161756.
5 Otto F, Dlouhý A, Somsen C, et al. Acta Materialia, 2013, 61(15), 5743.
6 Zhang Q, Li M, Han B, et al. Journal of Alloys and Compounds, 2021, 884, 160989.
7 Li M, Zhang Q, Han B, et al. Materials Chemistry and Physics, 2021, 258, 123850.
8 Wang W R, Wang W L, Wang S C, et al. Intermetallics, 2012, 26, 44.
9 Zhou J, Cheng Y, Wan Y, et al. Journal of Alloys and Compounds, 2024, 984, 173819.
10 Raabe D, Ponge D, Dmitrieva O, et al. Advanced Engineering Materials, 2009, 11(7), 547.
11 Ma E, Zhu T. Materials Today, 2017, 20(6), 323.
12 Li L, Wang J, Lin P, et al. Ceramics International, 2017, 43(18), 16638.
13 Guévenoux C, Hallais S, Balit Y, et al. Theoretical and Applied Fracture Mechanics, 2020, 107, 102520.
14 Wang Q, Li Q, Zhang L, et al. Ceramics International, 2022, 48(6), 7905.
15 Zhang S, Sun Y, Cheng W, et al. Surface and Coatings Technology, 2023, 467, 129681.
16 Dong J L, Wu X Q, Huang C G. Intermetallics, 2022, 144, 107529.
17 Sathiyamoorth I P, Basu J, Kashyap S, et al. Materials & Design, 2017, 134, 426.
18 Ghassemali E, Sonkusare R, Biswas K, et al. Journal of Alloys and Compounds, 2017, 710, 539.
19 Yang Y, Luo X, Ma T, et al. Journal of Alloys and Compounds, 2021, 864, 158717.
20 Fan Q, Chen C, Fan C, et al. Surface and Coatings Technology, 2021, 418, 127242.
21 Guo S, Ng C, Lu J, et al. Journal of Applied Physics, 2011, 109(10), 103505.
22 Huang L, Sun Y, Amar A, et al. Vacuum, 2021, 183, 109875.
23 Guo C, Wei S, Wu Z, et al. Materials & Design, 2023, 228, 111847.
24 Yang S, Lu J, Xing F, et al. Acta Materialia, 2020, 192, 11.
25 Zhang Y, Zhou Y J, Lin J P, et al. Advanced Engineering Materials, 2008, 10(6), 534.
26 Guan Y, Cui X, Chen D, et al. Surface and Coatings Technology, 2023, 464, 129569.
27 Wen X, Cui X, Jin G, et al. Surface and Coatings Technology, 2021, 405, 126728.
28 Huang T C, Hsu S Y, Lai Y T, et al. Surface and Coatings Technology, 2021, 425, 127713.
29 Fontalvo G A, Daniel R, Mitterer C. Tribology International, 2010, 43(1-2), 108.
30 Sun Z, Tan X P, Descoins M, et al. Scripta Materialia, 2019, 168, 129.