首页|高性能镁合金粉末床增材制造研究与展望

高性能镁合金粉末床增材制造研究与展望

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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、可降解等优点.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,后续需要二次加工,且存在气孔、氧化物夹杂等缺陷,力学性能较差.粉末床增材制造(PBAM)作为一种快速成形技术已被广泛用于制备复杂结构金属构件,为镁合金的开发及应用提供了平台.探讨了 PBAM过程中镁合金的成形缺陷,并总结了其性能特征;其次,研究了 PBAM工艺参数与镁合金成形性和性能之间的关系;介绍了不同后处理方法对PBAM制备的镁合金显微组织和机械性能的影响;最后,展望了 PBAM镁合金的未来潜在应用.
Research and Prospect on Powder Bed Additive Manufacturing of High-performance Magnesium Alloys
Mg alloys are the lightest metal structural materials,possessing low density,high specific strength high specific modulus,and degradability.Traditional manufacturing methods(casting,extrusion,etc.)struggle to produce complex geometries in a single step,necessitating secondary processing and resulting in defects such as porosity and oxide inclusions,leading to inferior mechanical properties.Powder Bed Additive Manufacturing(PBAM),as a rapid prototyping technology,has been widely used to fabricate complex structural metal components,providing a platform for the development and application of Mg alloys.Firstly,the forming defects of Mg alloys during the PBAM process and their performance characteristics were summarized.Secondly,the relationship between PBAM process parameters and the formability and mechanical properties of Mg alloys was explored.Furthermore,the effects of various post-processing methods on the microstructure and mechanical properties of Mg alloys prepared by PBAM were introduced.Finally,the potential future applications of PBAM Mg alloys were discussed.

magnesium alloyadditive manufacturingpowder bed additive manufacturingprocess optimizationperformance optimization

李子澈、吉辰、黄焕杰、廖若冰、宋波、文世峰、李坤

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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

华中科技大学材料科学与工程学院,武汉 430074

高端装备机械传动全国重点实验室,重庆 400044

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镁合金 增材制造 粉末床增材制造 工艺优化 性能优化

2024

有色金属工程
北京矿冶研究总院

有色金属工程

CSTPCD北大核心
影响因子:0.432
ISSN:2095-1744
年,卷(期):2024.14(12)