Layered metallic-intermetallic composites formed by explosion welding of nickel and aluminum plates and subsequent annealing of the bimetal for 1 – 100 h at 550, 570, 590 and 610°C are studied. X-ray diffraction analysis is used to determine special features of the structure of interfaces of bimetallic billets after welding and to estimate their contribution into the processes of nucleation and growth of layers of nickel aluminide. It is shown that the formation of the intermetallic is determined primarily by volume diffusion. The activation energy of the growth of the nickel aluminide layer depends on the structural state of the diffusion pair and on the presence of oxide films on the interfaces of the metallic plates.

研究了由镍和铝板爆炸焊接形成的层状金属-金属间化合物，随后双金属在 550、570、590 和 610°C 下退火 1-100 小时。X 射线衍射分析用于确定焊接后双金属坯料界面结构的特殊特征，并估计它们对铝化镍层的成核和生长过程的贡献。结果表明，金属间化合物的形成主要由体积扩散决定。铝化镍层生长的活化能取决于扩散对的结构状态和金属板界面上氧化膜的存在。