导热稀土镁合金研究进展

doi:10.11896/cldb.24110139

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Abstract This paper provides a comprehensive review of the latest research progress in the field of thermally conductive rare earth magnesium alloys, with a particular focus on the development trends of alloy systems containing La and Ce rare earth elements. By analyzing the mechanism of action of rare earth elements on the thermal conductivity of magnesium alloys, the intrinsic correlation between thermal conductivity and mechanical properties enhancement is deeply analyzed, and the existing magnesium alloy thermal conductivity prediction models are systematically summarized. An innovative multi-scale design strategy for high thermal conductivity rare earth magnesium alloys is proposed: (1) By selecting rare earth elements with lower solubility (such as La, Ce) as the main alloying elements, while strictly controlling the content of other high solubility elements, the minimization of lattice distortion and the synergistic improvement of mechanical properties are achieved; (2) Combining the optimization of heat treatment processes to tailor the morphology, size, and distribution characteristics of the second phase, an efficient thermal conduction network is constructed. The findings show that La and Ce rare earth elements can significantly enhance the thermal conductivity of magnesium alloys by more than 20% through mechanisms such as purifying the matrix and regulating the distribution of precipitated phases. The composition-process synergistic optimization design framework proposed based on this provides theoretical guidance for the development of new high-performance rare earth magnesium alloy materials with thermal conductivity exceeding 120 W/(m·K) and tensile strength exceeding 250 MPa. This research has significant reference value for promoting the engineering application of magnesium alloys in thermal management fields such as electronic packaging and aerospace.

Key words： rare earth magnesium alloy thermal conductivity solid solution atoms heat treatment

Published: 25 January 2026 Online: 2026-01-27

CLC number:

TG146.22

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	Articles by authors
	LI Kun
	LI Ruihong
	REN Huiping
	HU Wenxin
	WANG Haiyan
	YANG Zhenghua

Cite this article:

LI Kun,LI Ruihong,REN Huiping, et al. Research Progress on Thermal Conductivity Rare Earth Magnesium Alloys[J]. Materials Reports, 2026, 40(2): 24110139-11.

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https://www.mater-rep.com/EN/10.11896/cldb.24110139 OR https://www.mater-rep.com/EN/Y2026/V40/I2/24110139

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