【作者】 刘昕； 雷永平； 巩水利；

【Author】 Liu Xin,Lei Yongping,Gong Shuili

【机构】 北京工业大学； 北京航空制造工程研究所/高能束流加工技术国防科技重点实验室；

【摘要】 通过选用适当的电子束焊接工艺,可获得四种不同形状的电子束焊缝,分别为钟罩形、漏斗形、楔形和钉形。并对不同焊缝形状的电子束焊接接头进行了力学性能试验。结果表明,焊缝形状对接头的拉伸性能、疲劳性能和显微硬度有一定的影响。综合考虑接头的拉伸性能、显微硬度和疲劳性能,钟罩形接头的综合性能最佳。更多还原

【Abstract】 Four different weld shapes were obtained by proper electron beam welding parameters,which are respectively named as bell shape,funnel shape,nail shape,and wedge shape.Mechanical performance examinations of the electron beam welded joints with different shapes were carried through.The results show that weld shape effects tensile property, fatigue property and microhardness of the joint.It is considered that the comprehensive mechanical performance of the joint with bell shape is the best of all by the outcomes of tensile property,fatigue property and microhardness examinations.更多还原