| 李思琪1 ，王乐闻 1 ，姚远1 ，李美1 ，付丽1，2 ，乐启炽 2.高性能铸造镁-稀土合金在航空发动机上的应用[J].航空发动机,2025,51(2):22-31 |
| 高性能铸造镁-稀土合金在航空发动机上的应用 |
| Application of High-Performance Cast Magnesium-Rare Earth Alloys in Aeroengines |
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| DOI： |
| 中文关键词: 铸造镁合金 稀土 轻量化 航空发动机 |
| 英文关键词:casting magnesium alloy rare earth lightweighting aeroengine |
| 基金项目:辽宁省研究生教育教学改革研究项目（LNYJG2024326）资助 |
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| 中文摘要: |
| 航空发动机轻量化是提高飞行器整体性能和助力“双碳”目标的关键。镁-稀土合金密度小、比强度高、阻尼和铸造性能
优异，是航空发动机轻量化的理想材料，但强度、耐热性及耐腐蚀性不足，应用受限。为了提高镁-稀土合金的综合性能，推动其在
航空发动机上的应用，归纳了当前国内外开发的各种牌号铸造镁-稀土合金的性能特点，及其在航空发动机上的应用，介绍了镁-
稀土合金航空发动机部件的常用铸造工艺，从强度、耐热、耐腐蚀和阻燃性能4方面综述了高性能铸造镁-稀土合金在航空发动机
上的研究现状，分析了稀土提高镁合金性能的机制。总结了铸造镁-稀土合金的设计思路和作为航空发动机轻量化材料面临的挑
战，认为合金成分优化、服役可靠性研究、表面防护体系构建、镁基复合材料设计开发、铸造工艺改进可作为未来航空发动机用镁
合金的研究重点。 |
| 英文摘要: |
| The lightweighting of aeroengines is crucial for enhancing overall aircraft performance and contributing to "carbon peaking
and carbon neutrality goals". Magnesium-rare earth alloys, with their low density, high specific strength, excellent damping capacity, and
superior castability, are ideal materials for aeroengine lightweighting. However, their application is limited due to insufficient strength, heat
resistance, and corrosion resistance. To improve the comprehensive performance of magnesium-rare earth alloys and promote their applica?
tion in aeroengines, this paper summarizes the performance characteristics of various domestically and internationally developed cast
magnesium-rare earth alloys and their applications in aeroengines. Common casting processes for magnesium-rare earth alloy aeroengine
components are introduced. The current research status of high-performance cast magnesium-rare earth alloys in the aeroengine field is
reviewed from four aspects: strength, heat resistance, corrosion resistance, and flame retardancy. The mechanism by which rare earths
enhance the performance of magnesium alloys is analyzed. The design principles of cast magnesium-rare earth alloys and the challenges
faced as lightweighting materials for aeroengines are summarized. It is concluded that alloy composition optimization, service reliability
research, surface protection system development, magnesium-based composite material design and development, and casting process
improvement can serve as key research focuses for magnesium alloys in aeroengines in the future. |
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