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中文摘要：
采用电子束物理气相沉积（EB-PVD）技术，成功制备了0．2mm厚由24层Ti．Al和23层Nb交替叠加而成的Ti—AI／Nb层板复合材料，并采用扫描电子显微镜（SEM）等测试手段，对其物相组成和断口形貌等与Ti-Al单层材料进行了对比分析。结果表明，Ti—AI／Nb层板复合材料的界面明晰，层间距约为8gm；Ti-AI层由γ相和τ相组成，其成分呈梯度变化，且平均成分与原始铸锭的成分偏差较大，但未发现Ti-Al单层材料中看到的分层现象；Ti-AI／Nb层板复合材料具有比Ti-Al单层材料更好的韧性。
英文摘要：
Ti-AI/Nb multilayer composites with 0.2 mm thickness, alternatively overlaid by Ti-AI of 24 layers and Nb of 23 layers, were fabricated successfully by EB-PVD process, a new technique for producing sheet. The phase composition and fracture morphology of Ti-AI/Nb multilayer composites compared with those of one-layer Ti-AI alloys were analyzed by SEM etc. The results indicate that the interface of Ti-AI/Nb multilayer composites is transparent, and the interlayer spacing is about 8 p.m. Ti-AI layer is composed of γ and τ phase, and no lamination existing in the one-layer Ti-AI alloys is found. The component of Ti-AI layer changes gradationally, and the deviation of the average component of it from that of the original ingot is great. Ti-AI/Nb multilayer composites have better ductility than one-layer Ti-AI alloys
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