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针对金属冷压焊的结合机理，采用中子活化、电镜扫描、光谱分析等测试手段对金属冷压焊接头界面原子扩散行为进行了综合试验测定，发现在所测试的冷压焊接头中不存在异种金属间的相互扩散行为。进一步对冷压焊接头界面区的透射电镜观察分析表明：接头界面区是由挤压碎化的细晶构成，碎化的细晶在界面处相互咬合增加了相焊金属间物理接触面积，形成碎化细晶之间的晶间结合，无需金属原子间的扩散就能实现结合。根据上述分析结果，实现了非共格金属间及液相、固相不相溶金属间的对接冷压焊。并进一步说明了各种不同组配异种金属间的冷压焊接性
Aiming at the bonding mechanism of metal cold-press welding, the atom diffusion behavior of metal cold-pressed solder joint was tested by means of neutron activation, electron microscope scanning and spectral analysis. It was found that there was no existing cold-press welded joint Interdiffusion among dissimilar metals. Further analysis of TEM images at the interface area of the cold-pressed welded joint showed that the joint interface area was composed of finely crushed and finely grained crystals, and the finely grained crystals intermeshing at the interface increased the physical contact area between the phase welding metals and formed Broken fine crystal between the combination of the crystal, without the proliferation of metal atoms can achieve the combination. According to the above analysis results, the non-intergranular intermetallic and liquid-phase, solid phase immiscible butt joint cold-pressed welding. And further illustrates the different groups with dissimilar metals cold pressure weldability