摘要
锂作为最轻的金属元素,将其以1%的含量熔入铝合金,可使合金密度下降3%,弹性模量提高6%。铝锂合金凭借其优异的强度、防腐蚀性、抗疲劳特性及延展性,已成为航天领域中理想的轻质高强度材料。传统的熔铸法制作铝锂合金时存在一定的局限性,如需要特殊的熔铸设备,易产生气孔、裂纹等缺陷,且铸造后需进行锻造、挤压等工序,这增加了制造成本并延长了制造周期。然而,增材制造技术可避免这些问题,为铝锂合金的加工制造提供了一种新的解决方案。本文旨在对增材制造铝锂合金的组织结构与性能进行概述,总结了增材制造铝锂合金的主要技术研究概况,并分析了未来增材制造技术在铝锂合金制备过程中的发展趋势与前景。
Lithium is the lightest metal element.If 1%lithium is fused into aluminum alloy,the alloy density can be decreased by 3%and the elastic modulus can be increased by 6%.Due to its excellent strength,corrosion resistance,fatigue resistance and ductility,aluminum-lithium alloy has become an ideal lightweight high-strength material in the aerospace field.The traditional melting casting method has certain limitations when fabricating aluminum lithium alloy,such as the need for special melting casting equipment,easy to produce porosity,cracks and other defects.The need for forging,extrusion and other processes after casting increases the manufacturing cost and prolongs the manufacturing cycle.However,additive manufacturing technology can avoid these problems and provide a new solution for the processing and manufacturing of aluminum lithium alloy.In this paper,the microstructure and properties of additive manufacturing aluminum-lithium alloy are summarized,the main technology research situation of additive manufacturing aluminum-lithium alloy is concluded,and the development trend and prospect of additive manufacturing technology in the preparation of aluminum-lithium alloy in the future are analyzed.
作者
孙金娥
张丽春
张岩
王浩楠
刘子荣
封云慧
SUN Jin'e;ZHANG Lichun;ZHANG Yan;WANG Haonan;LIU Zirong;FENG Yunhui(Tianjin College,University of Science and Technology Beijing,School of Materials and Environment,Tianjin 301800,China)
出处
《粉末冶金工业》
北大核心
2025年第1期138-145,共8页
Powder Metallurgy Industry
关键词
增材制造
铝锂合金
密度
组织结构
性能
additive manufacturing
aluminum-lithium alloy
density
microstructure
property
