胶接对Ti-6Al-4V合金织构的影响

Effect of bonding on Ti-6Al-4V alloy texture

对2块航空航天工业常用的钛合金板Ti-6Al-4V的表面进行打磨、清洗及阳极化处理,然后在室温条件下用环氧320/322胶进行胶接,放入烘干箱中,在120℃温度下保温固化1 h。采用Bruker D8 Discover型X射线衍射仪对Ti-6Al-4V合金板及其胶接后的织构进行分析,研究胶接对Ti-6Al-4V合金织构的影响。结果表明:Ti-6Al-4V合金胶接固化后,欧拉角位于0°~42°区间内,{0001}?0211?织构变强,胶接对{0110}?0211?织构影响不大。胶结后的钛合金在β取向线上的织构占比约为19.4%,?取向线上的织构占比约为81.6%。

Surface of titanium alloy Ti-6Al-4V which was often used in the aerospace industry was polished, cleaned and anodized, and two pieces of Ti plates were bonded with epoxy 320/322 adhesion and placed in a self-made fixture at room temperature. Then the whole fixture was put in heated drying box for an hour at 120 ℃ to solidify. Texture of bonded Ti-6Al-4V alloy was characterized by Bruker D8 X-ray diffractometer to study the effect of bonding on the texture of Ti-6Al-4V alloy. The results show that texture of {0001}（ 112^-0 ） becomes stronger between 0° and 42°; and { 1010 }（1120） has little change at bonding zone after curing. The fractions of alloy texture along β-fiber α-fiber are 19.4% and 81.6%, respectively.