CAJ | 학술논문

电子束焊接能量对TC4钛合金焊缝力学性能具有一定的影响。随着电子束焊接次数的增加，焊缝能量输入增加，焊接残余拉应力逐渐增大，焊缝拉伸性能和断裂延伸率降低；当焊接次数达到6次时，拉伸强度为927MPa，低于母材强度的90%，无法满足GJB1718A-2005 I级标准要求；当焊接次数达到4次时，焊缝断裂伸长率低于10%。
전자속한접능량대TC4태합금한봉역학성능구유일정적영향。수착전자속한접차수적증가，한봉능량수입증가，한접잔여랍응력축점증대，한봉랍신성능화단렬연신솔강저；당한접차수체도6차시，랍신강도위927MPa，저우모재강도적90%，무법만족GJB1718A-2005 I급표준요구；당한접차수체도4차시，한봉단렬신장솔저우10%。
Electron beam welding energy inlfu-ences the TC4 titanium alloy welds mechanical properties . With the increase of the number of electron beam weld-ing , welding energy input increases , weld residual stress increases , tensile strength and fracture elongation reduces . When the welding number reaches 6 times , the strength is 927MPa , less than 90% of the base material strength , could not meet the GJB1718A-2005 I grade standards . When the welding number reaches 4 times , weld fracture elongation is less than 10%.