铝锂合金熔炼及凝固成形技术研究进展
Research Progress of Melting and Solidification Forming Technology for Al-Li Alloy
严兆祥 1潘宇 1李建宇 1吕书林 1吴树森 1郭威1
作者信息
- 1. 华中科技大学材料科学与工程学院材料成形及模具技术国家重点实验室,湖北武汉 430074
- 折叠
摘要
铝锂合金作为一种新型航空航天材料,因其具有低密度、高比强度和比刚度等优势,从而具有广泛的应用前景.现有关铝锂合金的研究多集中于微合金化及热加工工艺(如热挤压、热处理等),但忽视了热加工步骤前的原始铝锂合金锭料质量也会对合金最终性能产生很大影响.然而,目前对于铝锂合金锭料的熔炼及凝固成形技术的研究尚且不多.因此,本文从高真空和非真空2种环境下对铝锂合金锭料的制备技术进行了综述和总结,其中包括喷射成形、粉末冶金、超声辅助挤压铸造成形工艺等.本文深入分析了这些技术的优缺点,并提出制备铝锂合金锭料的一些新思路或展望.
Abstract
Al-Li alloys,as a new type of aerospace material,have a wide range of application prospects due to their advantages of low density,high specific strength and specific stiffness.Existing research on Al-Li alloys focuses on microalloying and hot processing(e.g.,hot extrusion,heat treatment),but neglects the fact that the quality of the original Al-Li alloy ingot prior to the hot processing step also has a great impact on the final properties of the alloy.However,not much research has been done on the melting and solidification forming technologies for Al-Li alloy ingots.Therefore,the preparation techniques of Al-Li alloy ingots in both high-vacuum and non-vacuum environments,including spray forming,powder metallurgy,and ultrasonic-assisted extrusion casting forming process,were reviewed and summarized.The advantages and disadvantages of these technologies were analyzed,and some new ideas or prospects for the preparation of Al-Li alloy ingots were proposed.
关键词
铝锂合金/熔炼/制备技术/微观组织/力学性能Key words
Al-Li alloy/melting/preparation technology/microstructure/mechanical properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据