镁合金增材制造技术研究与展望
Research and prospects of magnesium alloy additive manufacturing technology
李坤 1黄焕杰 2朱亮 2吉辰 2廖若冰 2蒋斌 3潘复生3
作者信息
- 1. 高端装备机械传动全国重点实验室,重庆 400044;重庆大学机械与运载工程学院,重庆 400044;高性能结构增材制造重庆市重点实验室,重庆 400044
- 2. 重庆大学机械与运载工程学院,重庆 400044;高性能结构增材制造重庆市重点实验室,重庆 400044
- 3. 重庆大学国家镁合金材料工程技术研究中心,重庆 400044
- 折叠
摘要
镁合金是最轻的金属结构材料,具有密度低、比强度、比刚度高、阻尼减震性能好、生物降解性良好等优点.传统的镁合金制造方式(铸造、挤压等)难以一步制备复杂的几何形状,铸造镁合金因冷却速率较低常常导致晶粒粗大,力学性能较差,挤压镁合金在成形过程中极易产生氧化夹杂等缺陷.相比之下,增材制造技术拥有快速一体化成形的优点,已逐步应用于镁合金的生产制造.目前,镁合金的增材制造技术主要包括:激光粉末床熔融技术(LPBF)、电弧熔丝增材制造技术(WAAM)、搅拌摩擦沉积技术(AFSD)以及粉末床粘合剂喷射技术(BJ).本文首先综述了镁合金增材制造现状,针对以上4种增材制造技术分析了其成形原理、特性及成形合金特点.讨论了 4种增材制造镁合金的研究现状及现存问题,总结了镁合金增材制造技术的优缺点,希望可以推动镁合金增材制造技术的研究进展.
Abstract
Magnesium alloys are the lightest metal structural materials,characterized by low density,high specif-ic strength and stiffness,excellent damping,shock absorption properties,and good biodegradability.Traditional manufacturing methods of magnesium alloys,such as casting and extrusion,find it challenging to produce com-plex geometries in a single step.Cast magnesium alloys often suffer from coarse grains and poor mechanical properties due to low cooling rates,while extruded magnesium alloys are prone to defects like oxidation inclu-sions during forming.In contrast,additive manufacturing(AM)technology offers the advantage of rapid integrat-ed forming and has gradually been applied to the production of magnesium alloys.Currently,the main AM tech-nologies for magnesium alloys include Laser Powder Bed Fusion(LPBF),Wire Arc Additive Manufacturing(WAAM),Additive Friction Stir Deposition (AFSD),and Binder Jetting (BJ). The current status of additive manu-facturing of magnesium alloys,analyzing of the forming principles,characteristics,and specific alloy properties of these four AM technologies were reviewed. The research status and existing problems of these four additive manufacturing techniques for magnesium alloys were discussed,their advantages and disadvantages were summa-rized,and aims to promote the research progress of magnesium alloy additive manufacturing technology.
关键词
镁合金/增材制造/激光粉末床熔融/电弧熔丝增材制造/搅拌摩擦沉积技术/粉末床粘合剂喷射Key words
magnesium alloy/additive manufacturing/laser powder bed fusion/wire arc additive manufacturing/additive friction stir deposition/binder jetting引用本文复制引用
基金项目
国家自然科学基金资助项目(52201105)
四川省自然科学基金资助项目(2023NSFSC0407)
重庆市研究生科研创新资助项目(CYB23018)
出版年
2024
NETL
NSTL
万方数据