电焊机2025，Vol.55Issue(5)：1-11,11.DOI:10.7512/j.issn.1001-2303.2025.05.01
轨道交通用钛合金摆动激光-电弧复合增材成形、组织及力学性能研究
Study on Forming,Microstructure and Mechanical Properties of Oscil-lating Laser-arc Hybrid Additive of Titanium Alloy for Rail Transit
摘要
Abstract
This study investigates the effects of different laser oscillation parameters on the forming quality and microstruc-tural properties of rail transit titanium alloy fabricated by laser-arc hybrid additive manufacturing.The results indicate that oscillating laser can induce arc stabilization,thereby enhancing process stability during deposition.When employing a small oscillation amplitude of 0.5 mm,superior formation quality was achieved,whereas non-oscillated laser resulted in signifi-cant surface undulations and a 1 mm amplitude caused increased wall roughness.At the optimal 0.5 mm amplitude,typical nail-shaped molten pool penetration was formed,which effectively refined grain size.In contrast,nearly horizontal fusion lines with continuous vertical grain growth were observed under non-oscillation and excessive amplitude conditions,leading to coarse grain structures.The 0.5 mm amplitude demonstrated the most significant grain refinement effect,contributing to optimal tensile properties with the specimen achieving a tensile strength of 949.07 MPa.关键词
钛合金/摆动激光/增材制造/成形/组织性能Key words
titanium alloy/oscillating laser/additive manufacturing/forming/microstructure and properties分类
金属材料引用本文复制引用
孙术娟,马寅,郝守雨,刘福运,韩晓辉,檀财旺..轨道交通用钛合金摆动激光-电弧复合增材成形、组织及力学性能研究[J].电焊机,2025,55(5):1-11,11.基金项目
国家重点研发计划(2023YFB3407800) （2023YFB3407800）
