6005A-5083搅拌摩擦焊接接头的组织与性能研究  

Study on the structure of 6005A-5083 friction stir welding Joint

作　　者：唐林波 王向东 温欢 刘雄 剡苏荣 谢紫华 TANG Linbo;WANG Xiangdong;WEN Huan;LIU Xiong;YAN Surong;XIE Zihua(CRRC Zhuzhou Institute Co.,Ltd.,Zhuzhou,Hunan 412001,China)

机构地区：[1]中车株洲电力机车研究所有限公司,湖南株洲412001

出　　处：《轨道交通材料》2024年第1期46-50,55,共6页MATERIALS FOR RAIL TRANSPORTATION SYSTEM

基　　金：机动城柜体典型构件可靠性及寿命研究项目(K10TZ20P0500)。

摘　　要：针对6005A-5083搅拌摩擦焊接接头进行分析,分别对其微观组织、静态力学性能及疲劳寿命进行了测试,组织观察表明6005A基材区的晶粒以亚结构为主,呈现典型的纤维状组织,5083基材区则以等轴晶为主,通过搅拌摩擦焊可以细化晶粒,提高抗拉强度、屈服强度和疲劳强度,6005A-5083搅拌摩擦焊接接头试样在110 MPa下,进行了1000万次循环加载后未形成明显的裂纹,通过了疲劳测试,可应用于轨道交通。In order to analyze the friction stir welding joint of 6005A-5083,its microstructure,static mechanical properties and fatigue life were tested.The observation of the microstructure showed that the grains in the 6005 base material area were dominated by substructures,presenting typical fibrous structures,while the 5083 base material area was dominated by equiaxed grains.Through friction stir welding,it can refine the grain size,improve the tensile strength,yield strength and fatigue strength.The friction stir welding joint sample of 6005A-5083 did not form obvious cracks after 10 million cycles of loading at 110 MPa,passing the fatigue test,and can be applied to rail transportation.

关 键 词：6005A-5083 搅拌摩擦焊 微观组织 力学性能 疲劳寿命 

分 类 号：U270.41[机械工程—车辆工程]