Fabrication and Tribological Performance of FeCoCrNiMo/Al-10Si Composites

doi:10.11901/1005.3093.2025.367

Chinese Journal of Materials Research

2026, Vol. 40

Issue (10): 746-756 DOI: 10.11901/1005.3093.2025.367

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Fabrication and Tribological Performance of FeCoCrNiMo/Al-10Si Composites

HU Yong(

), QIAO Zenghuan, XIN Yu

School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, China

Cite this article:

HU Yong, QIAO Zenghuan, XIN Yu. Fabrication and Tribological Performance of FeCoCrNiMo/Al-10Si Composites. Chinese Journal of Materials Research, 2026, 40(10): 746-756.

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Abstract

Composites of FeCoCrNiMo/Al-10Si were fabricated by laser deposition technique with mixed powder of FeCoCrNiMo and Al-10Si as raw material. The microstructure, local composition and tribological properties of the composites were characterized by optical microscopy, scanning electron microscopy, transmission electron microscopy, and UMT-3 tribometer. The results demonstrate that the α-Al grain size gradually decreases with the increasing mass fraction of FeCoCrNiMo reinforcements. The morphology of the reinforcing phase evolves from initially spherical to petal-like, and finally to a coarse fishbone structure. A distinct interfacial reaction layer with a thickness of approximately 30 nm is formed between the FeCoCrNiMo high-entropy alloy and the Al matrix, which can be identified as Al₃Ni₂. As the mass fraction of the FeCoCrNiMo reinforcements increases, the wear resistance of the composites was improved correspondingly. However, when the mass fraction of FeCoCrNiMo exceeds 10%, the enhancement in wear resistance becomes less pronounced. The dominant wear mechanism shifts from fatigue and adhesive wear to abrasive wear.

Key words: composites FeCoCrNiMo Al-matrix composites laser deposition microstructure wear resistance

Received: 16 December 2025

ZTFLH:

TB331

Fund: National Natural Science Foundation of China(51865011)

Corresponding Authors: HU Yong, Tel: 13576012078, E-mail: huyong@ecjtu.edu.cn

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	QIAO Zenghuan
	XIN Yu

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https://www.cjmr.org/EN/10.11901/1005.3093.2025.367 OR https://www.cjmr.org/EN/Y2026/V40/I10/746

Fig.2 Average grain size of FeCoCrNiMo/Al-10Si composites

Fig.1 Microstructure of FeCoCrNiMo/Al-10Si composites (a) A0, (b) A5, (c) A7.5, (d) A10, (e) A12.5, (f) A15

Fig.3 Morphology of reinforcing phase in FeCoCrNiMo/Al-10Si composites (a) A5, (b) A7.5, (c) A10, (d) A12.5, (e) A15

Fig.4 Average grain size of FeCoCrNiMo reinforced phase

Fig.5 SEM-EDS analysis of A10 composite

Fig.6 TEM observation of A15 composite

Table 1 Values of ΔH_mix (kJ/mol) between different elements

Table 2 Point scanning of diffusion layer of A15 composite (mass fraction, %)

Fig.7 Bright field (BF) diagram and selected area electron diffraction (SAED) diagram of A15 composites (a) BF diagram, (b) HRTEM image of zone 1, (c) SAED pattern of interface reaction layer Al₃Ni₂, (d) SAED pattern of Al phase, (e)SAED pattern of FCC phase, (f) SAED pattern of Si phase

Fig.8 Microhardness of FeCoCrNiMo/Al-10Si composites

Fig.9 Friction coefficient of FeCoCrNiMo/Al-10Si composites

Fig.10 Three-dimensional profiles of wear scar of of FeCoCrNiMo/Al-10Si composites (a) A0, (b) A5, (c) A7.5, (d) A10, (e) A12.5, (f) A15

Fig.11 Macroscopic morphology of wear scar of of FeCoCrNiMo/Al-10Si composites (a) A0, (b) A5, (c) A7.5, (d) A10, (e) A12.5, (f) A15

Fig.12 Cross-sectional profile of the wear scar (a) and wear rate (b) of FeCoCrNiMo/Al-10Si composites

Table 3 EDS analysis of FeCoCrNiMo / Al-10Si wear surface (atomic fraction, %)

Fig.13 Wear surface morphology of FeCoCrNiMo/Al-10Si composites (a) A0, (b) A5, (c) A7.5, (d) A10, (e) A12.5, (f) A15

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