The material used in this experiment was 3003 cladding aluminum alloy, the cladding metal was 4004 aluminum alloy. The aluminum plate was brazed by means of vacuum brazing. The microstructure in the brazing joint was ...The material used in this experiment was 3003 cladding aluminum alloy, the cladding metal was 4004 aluminum alloy. The aluminum plate was brazed by means of vacuum brazing. The microstructure in the brazing joint was studied by means of X-ray diffractometry （XRD） and transmission electron microscopy （TEM）. The test result indicates that the suitable brazing technique parameters are brazing temperature, 628℃; keeping time, 10 min; vacuum degree, 6.5×10^-4 Pa. XRD test indicates that there are new intermetallic compounds different from the base metal. TEM analysis indicates that Cu2Mg and CuaMn2Mg are formed in the brazing joint. The shape of Cu2Mg is irregular and the shape of Cu3Mn2Mg is circle, and there are tiny particles in it.展开更多
文摘The material used in this experiment was 3003 cladding aluminum alloy, the cladding metal was 4004 aluminum alloy. The aluminum plate was brazed by means of vacuum brazing. The microstructure in the brazing joint was studied by means of X-ray diffractometry （XRD） and transmission electron microscopy （TEM）. The test result indicates that the suitable brazing technique parameters are brazing temperature, 628℃; keeping time, 10 min; vacuum degree, 6.5×10^-4 Pa. XRD test indicates that there are new intermetallic compounds different from the base metal. TEM analysis indicates that Cu2Mg and CuaMn2Mg are formed in the brazing joint. The shape of Cu2Mg is irregular and the shape of Cu3Mn2Mg is circle, and there are tiny particles in it.
