TC4钛合金激光焊接技术研究进展

Research Progress in Laser Welding Technology of TC4 Titanium Alloy

激光焊接技术作为当前一种高效、优质焊接新技术的典型代表具有高质、高效、高稳定性、低变形等技术优势,拥有广泛的应用领域。总结了国内外激光焊、激光填丝焊、激光-电弧复合焊接TC4(Ti-6Al-4V)钛合金时,焊接参数对焊缝成形的影响,并且分析了激光-电弧复合焊金属蒸气等离子体的作用机制、复合热源的相互作用模式及熔滴过渡和熔池动力学,重点探讨了焊缝及热影响区典型微观组织及其转变过程,为激光焊接技术在TC4钛合金实际工程应用推广提供理论支撑。

Laser welding technology,as a typical representative of current efficient and high-quality welding new technologies,has advantages such as high quality,high efficiency,high stability,and low deformation,and has a wide range of application fields.The influence of welding parameters on weld formation during laser welding,laser welding with filler wire and laser-arc hybrid welding of TC4(Ti-6Al-4V)titanium alloy at home and abroad is summarized.Analyzed the mechanism of action of metal vapor plasma in laser-arc hybrid welding,the interaction mode of composite heat sources,and the dynamics of droplet transfer and melt pool,and the typical microstructure and transformation process of weld and Heat-affected zone are emphatically discussed,which provides theoretical support for the application and popularization of laser welding technology in practical engineering of TC4 titanium alloy.