电焊机2025，Vol.55Issue(3)：15-27,13.DOI:10.7512/j.issn.1001-2303.2025.03.03
稀土在低合金高强钢焊缝金属中的应用与研究现状
Research Status of Rare Earth Elements in High-Strength Low-Alloy Weld Metals
摘要
Abstract
The passage reviews the impact of rare earth elements on the weld metal of low-alloy high-strength steel,includ-ing their effects on welding processibility and the microstructure and properties of the weld metal.It summarizes the role of rare earth elements in improving the processability of welding wires,electrodes,and fluxes,as well as their impact on inclu-sions and solid solutions in the weld metal.The paper also discusses the methods of introducing rare earth elements under different welding material preparation methods and the commonly used detection methods for rare earth elements in weld metal.Results indicate that rare earth elements can enhance the processability of welding wires,electrodes,and fluxes,pri-marily by enhancing arc stability,improving droplet and slag properties,achieving ultra-low spatter,reducing welding de-fects,and optimizing weld formation.Through complex metallurgical reactions,they form composite inclusions and solid so-lutions,which can purify the weld,refine the grain,and induce needle-like ferrite nucleation,thereby enhancing the strength,toughness,and corrosion resistance of the weld.Depending on the method of preparing the welding materials,the way and form in which rare earths are added significantly affect their transition rate.Compared to traditional analysis methods,induc-tively coupled plasma analysis technology has a more pronounced advantage in detecting the content of rare earth elements in the weld.The current understanding of the mechanisms by which rare earth elements operate in weld metal is still not en-tirely clear,and the methods of addition and detection also limit their further application and development in welding materi-als.Future efforts need to focus on researching the functioning mechanisms of rare earth elements in weld metal,optimizing the amount and methods of adding rare earth elements,and establishing comprehensive detection standards to promote the application of rare earths in low-alloy high-strength steel welding materials.关键词
低合金高强钢/焊缝金属/组织性能/焊接工艺性/稀土添加/化学检测Key words
high strength low alloy/welding metallurgy/microstructure property/weldability/rare earth addition/chemical testing分类
金属材料引用本文复制引用
李春剑,徐锴,冯伟,刘满雨,李佳楠..稀土在低合金高强钢焊缝金属中的应用与研究现状[J].电焊机,2025,55(3):15-27,13.基金项目
黑龙江省重点研发计划项目(2022ZX04A01) （2022ZX04A01）
