CAJ | 학술논문

研究不同连接时间下Ti-17钛合金扩散连接界面特征及接头剪切强度。结果表明，随着连接时间的延长，连接界面平均空洞尺寸逐渐减小，空洞数量增加至最大值后逐渐减少。具有锯齿状边缘的不规则空洞逐渐转变为具有平滑表面的椭圆形空洞以及细小的圆形空洞。当连接时间为60 min时连接界面上形成了跨连接界面的晶粒。接头剪切强度随着连接时间的延长而增大，当连接时间为60 min时，接头剪切强度达到最大值，为887.4 MPa。尽管塑性变形的作用时间很短，但是对促进空洞闭合以及提高接头剪切强度的作用显著。
연구불동련접시간하Ti-17태합금확산련접계면특정급접두전절강도。결과표명，수착련접시간적연장，련접계면평균공동척촌축점감소，공동수량증가지최대치후축점감소。구유거치상변연적불규칙공동축점전변위구유평활표면적타원형공동이급세소적원형공동。당련접시간위60 min시련접계면상형성료과련접계면적정립。접두전절강도수착련접시간적연장이증대，당련접시간위60 min시，접두전절강도체도최대치，위887.4 MPa。진관소성변형적작용시간흔단，단시대촉진공동폐합이급제고접두전절강도적작용현저。
The bonding interface characteristic and shear strength of diffusion bonded Ti-17 titanium alloy at different bonding time were investigated. The results show that the average size of voids decreases while the amount of voids decreases after increasing to the maximum value with the increasing bonding time. The irregular void with a scraggly edge tends to an ellipse void with smooth surface and then changes to a tiny void with round shape. The grains across bonding interface occur at bonding time of 60 min. The shear strength of bond increases with increasing bonding time, and the highest shear strength of bond is 887.4 MPa at 60 min. The contribution of plastic deformation on the void closure and the increase of shear strength is significant even though the action time of plastic deformation is short.