摘要
随着航空航天、国防军工等领域对装备轻量化的需求愈发迫切,轻质高强耐热镁稀土合金的开发与应用成为了当前镁合金领域的研究热点。针对镁稀土合金的熔体特性,开发配套的熔体处理工艺以提高镁稀土合金熔体制备质量,是获得高性能镁稀土合金铸件的基本保障。本文首先全面分析了镁稀土合金熔体特性及其熔体处理难点问题,系统总结了镁稀土合金熔体处理工艺的最新研究成果,深入阐明了熔体处理工艺对镁稀土合金各项关键性能指标的影响。最后面向镁稀土合金的实际工程应用需求,对其熔体处理工艺存在的问题及发展趋势进行了探讨。
As the demand for lightweight equipment in aerospace, national defense and military industries becomes more and more urgent, the development and application of lightweight, high-strength, heat-resistant magnesiumrare earth(Mg-RE) alloys has become a research focus in the field of magnesium alloys. The development of appropriate melt treatment processesaccording to the melt characteristics of Mg-RE alloys is the basic guarantee to improve the quality of alloy melts for obtaining high-performance Mg-RE alloy castings. This review article first comprehensively analyzes the characteristics of Mg-RE alloy melt and the difficulties of their melt treatment, and then systematically summarizes the latest research results of melt treatment technology of Mg-RE alloys.The effect of the melt treatment on the key performance indicators of Mg-RE alloys has also been clarified. Finally, the shortages and development trends of the melt treatment technology of Mg-RE alloys are discussed in consideration of their actual application requirements.
作者
吴国华
童鑫
眭怀明
丁文江
WU Guo-hua;TONG Xin;SUI Huai-ming;DING Wen-jiang(National Engineering Research Center of Light Alloys Net Forming and State Key Laboratory of Metal Matrix Composite,Shanghai Jiao Tong University,Shanghai 200030,China;Yangzhou Fengming Photoelectriv Mew Material Co.,Ltd.,Yangzhou 225117,Jiangsu,China)
出处
《铸造》
CAS
北大核心
2021年第1期2-14,共13页
Foundry
基金
国家自然科学基金(51775334、51821001、U2037601)
国家重点研发计划项目(2016YFB0701205)
上海航天先进技术联合研究基金(USCAST2020-31)。
关键词
镁稀土合金
熔体处理
纯净化
细化处理
均质化
magnesium-rare earth alloy
melt treatment
purification
refining treatment
homogenization
