摘要
分别用“一”、“O”和“∞”3种摆动模式,与常规激光焊接模式对比,研究不同摆动模式对激光焊接6061铝合金焊缝组织特征和力学性能的影响。结果表明:相对于常规激光焊接,激光摆动焊能降低焊缝塌陷,其中“一”摆动和“O”摆动将塌陷降至0.5 mm以内。激光摆动焊接使柱状晶区的宽度减小,细化了熔合区晶粒组织,“O”摆动细化效果最显著,晶粒的平均等效直径最小,约89.7μm。对于焊缝力学性能,“O”摆动熔合区硬度最高。激光摆动焊接提高了焊缝抗拉强度和塑性,“O”型摆动抗拉强度为200.98 MPa,达到母材强度的85.4%,伸长率约为15.1%,比常规激光焊接模式高60.2%。
Using three oscillation modes of“一”,“O”and“∞”respectively,compared with the conventional laser welding mode,the influence of different oscillation modes on the microstructure characteristics and mechanical properties of laser welded 6061 aluminum alloy welds was studied.The results indicate that compared to conventional laser welding,laser swing welding can reduce weld collapse,with the“one”-shaped swing and“O”-shaped swing reducing collapse to within O.5 mm.Laser swing welding reduces the width of the columnar crystal zone and refines the grain structure of the fusion zone.The“O”-shaped swing has the most significant refinement effect,with the smallest average equivalent diameter of the grains,about 89.7μm.For the mechanical properties of welds,the hardness of the“O”swing fusion zone is the highest.Laser swing welding improves the tensile strength and plasticity of the weld seam.The“O”-shaped swing tensile strength is 200.98 MPa,reaching 85.4%of the base metal strength,with an elongation of about 15.1%,which is 60.2%higher than the conventional laser welding mode.
作者
王晓龙
姬雄帅
刘长青
黄建源
牛凤姣
朱聪聪
郭亚杰
WANG Xiaolong;JI Xiongshuai;LIU Changqing;HUANG Jianyuan;NIU Fengjiao;ZHU Congcong;GUO Yajie(College of Materials Science and Engineering,Chang'an University,Xi'an 710061,China;Modern Engineering Training Center,Chang'an University,Xi'an 710061,China;College of Materials Science and Engineering,Hunan University,Changsha 410082,China)
出处
《兵器材料科学与工程》
北大核心
2025年第4期67-74,共8页
Ordnance Material Science and Engineering
基金
陕西省重点研发项目(2024GX-YBXM-352)
国家自然科学基金(52101007)
西安市重点产业链关键核心技术攻关项目(23LLRH0004)
长安大学创新创业训练计划项目(202410710095)。
关键词
6061铝合金
激光摆动焊
摆动模式
显微组织
力学性能
6061 aluminum alloy
laser oscillation welding
oscillation mode
microstructure
mechanical properties
作者简介
第一作者:王晓龙,男,硕士研究生;通信作者:郭亚杰,男,教授,博士生导师。E-mail:yjguo@chd.edu.cn。
