Research status and applications of beryllium-aluminum alloys
CHEN Kaixuan
WANG Weimin
WEI Chenghao
WANG Zidong
Abstract：Significance Beryllium-aluminum(Be-Al)alloys have garnered attention due to their outstanding properties,including excel-lent specific strength,high specific stiffness,superior thermal stability,exceptional toughness,and strong corrosion resistance.These alloys combine the high elastic modulus and low density of Be with the processing ease and high toughness of Al,making them ideal materials for rocket and aircraft manufacturing.This paper reviews the current research status of Be-Al alloys and pro-vides valuable insights for their development and application.
Progress The article summarizes the characteristics,development status,preparation methods,the impact of element additions on properties,and application areas of Be-Al alloys.The low mutual solubility between Be and Al gives Be-Al alloys a unique microstructure and metal matrix composite characteristics.Large-scale production of Be-Al alloys has been achieved abroad,and research on their excellent physical and chemical properties has deepened.Mainstream preparation processes such as pow-der metallurgy and investment casting are discussed,along with new techniques for producing high-performance Be-Al alloys,such as laser stereolithography and self-exhaust pressure infiltration.The latter has shown a strengthening enhancement of over 100％.Alloying with elements like germanium(Ge),copper(Cu),scandium(Sc),and zirconium(Zr)can effectively opti-mize the microstructure of Be-Al alloys,improving their mechanical properties.Be-Al alloys are now widely used in aerospace components and optical systems.
Conclusions and Prospects China's production capacity for high-end beryllium alloys needs improvement.In the future,more investment in research and optimization of Be-Al alloy preparation processes is needed to advance their applications in aero-space,defense technology,and optical systems.1)Developing advanced Be powder and Be-Al alloy powder preparation tech-niques is critical for enhancing alloy performance and expanding their application range.2)The self-exhaust pressure infiltra-tion combined with hot extrusion has produced Be-Al alloys with excellent microstructure and performance.However,this pro-cess has not yet been scaled up for industrial production,requiring further refinement to support Be-Al alloy development.3)Developing environmentally friendly and efficient methods for Be resource utilization will reduce the cost of Be and its products,enhancing market competitiveness and driving the development of related industries.4)Compared to aluminum alloy systems,alloying studies on Be-Al alloys are still relatively limited and lack in-depth theoretical research.5)To promote the application of Be-Al alloys in China,breakthroughs are needed in material preparation,composition optimization,strengthening mecha-nisms,and precision forming technologies.
Keywords：berylliumberyllium-aluminum alloymaterials formingalloyingberyllium reserveaerospace
Publication Date：2025-02-24
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：16( 154-169 )