热机械处理提高Cr47Ni33Co10Fe10多组元共晶合金力学性能

doi:10.11896/cldb.23120100

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Abstract The disordered face-centered cubic (FCC)+disordered body-centered cubic (BCC) multi-component eutectic alloy (MCEA) Cr₄₇Ni₃₃Co₁₀Fe₁₀ has important engineering application value. In this work, we adopt a thermal mechanical treatment strategy of reducing alloy thickness by 90% through multiple passes of cold rolling and annealing at 800 ℃ for 1 hour to improve the mechanical properties of the alloy. The yield strength (σ_0.2) of Cr₄₇Ni₃₃Co₁₀Fe₁₀ after thermomechanical treatment is 1 230 MPa, and the tensile fracture strain (ε) is 13%. The yield strength has increased by 864 MPa compared to as cast alloys, which is more than three times that of the as-cast alloy, and there is almost no loss of plasticity. The matching of high strength and high plasticity comes from the substitution of the initial lamellar structure by the duplex ultrafine equiaxed grains. The work provides a feasible heat treatment process for improving the mechanical property of dual-phase eutectic high-entropy alloys.

Key words： eutectic high entropy alloy thermomechanical treatment ultra-fine grain mechanical property

Published: 10 February 2025 Online: 2025-02-05

CLC number:

TG156

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	Articles by authors
	XUE Zan
	JIN Xi
	MAO Zhouzhu
	LAN Aidong
	WANG Dayu
	QIAO Junwei

Cite this article:

XUE Zan,JIN Xi,MAO Zhouzhu, et al. Thermomechanical Treatment Improves the Mechanical Properties of Cr₄₇Ni₃₃Co₁₀Fe₁₀ Multi-component Eutectic Alloys[J]. Materials Reports, 2025, 39(3): 23120100-6.

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http://www.mater-rep.com/EN/10.11896/cldb.23120100 OR http://www.mater-rep.com/EN/Y2025/V39/I3/23120100

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