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采用惰性气氛下热压方法，研究了Ｔｉ－３３Ａｌ－３Ｃｒ（质量分数，％）合金粗大（α２／γ）层片组织材料／粗大（α２／γ）层片组织材料及粗大（α２／γ）层片组织材料／细小双态组织（γ＋α２／γ）材料焊接界面及其显微组织，以及随后的热处理退火制度对此界面的影响．试验结果表明，粗大（α２／γ）／粗大（α２／γ）界面的显微组织特征受界面粗大层片状晶团位向的影响．此类界面经过１２５０℃退火，其显微组织变化不明显，但促使γ相等轴晶退火孪晶的形成；而经过１２８０℃退火，原焊接联接界面变宽，在（α２／γ）晶团界面上发生部分再结晶现象；而经过１３５０℃退火（Ｔｉ－３３Ａｌ－３Ｃｒ合金的ｔα≈１３０５℃），整个联接件材料发生重结晶，形成新的、粗大的全层片状组织，原焊接联接界面消失．采用细晶双态组织材料与粗大全层片状组织材料对焊，可得到良好的固态焊接结合面．
(Α2 / γ) lamellar material / coarse (α2 / γ) lamellar material and coarse (α2 / γ) lamellar structure of Ti-33Al-3Cr alloy were investigated by hot pressing in inert atmosphere. The effect of the interface between the lamellar material / fine dual-state (γ + α2 / γ) material and its microstructure, and the subsequent annealing of the heat treatment on this interface were investigated. The experimental results show that the microstructure of the coarse (α2 / γ) / coarse (α2 / γ) interface is affected by the orientation of the lamellae of the coarse coats. After annealing at 1250 ℃, the microstructure of the interface did not change obviously, but the formation of γ-axis equiaxed twinning was promoted. After annealing at 1280 ℃, the interface of the original welding broadened, And the partial recrystallization phenomenon occurred. After annealed at 1350 ° C (tα≈1305 ° C for Ti-33Al-3Cr alloy), the entire joint material recrystallized to form a new, coarse, full-thickness lamellar structure. The original welding joint interface disappear. The use of fine-grained bimorphic tissue material and coarse full-thickness tissue material butt welding, get a good solid-state welding surface.