共晶合金的熔点为什么变低

从相图上可以看出,严格来说,共晶体是不存在的,因为它只是对应一个严格的含碳量百分之4点3,而亚共晶体对应一段区域,他们之间没有突变.

Product Description
Aluminum based filler metals are binary or multi-component alloy solders made from principally Al-Si eutectic alloy with the addition of various alloying elements such as copper, zinc, magnesium and rare metals. They are suitable to be used in the torch, high-frequency, furnace, protective atmosphere and vacuum brazing methods for the brazing of aluminum and aluminum alloys, stainless steel and stainless iron. Except the protective atmosphere and vacuum brazing methods, all other types of brazing will need suitable aluminum brazing fluxes, and sand blasting or cleaning must be applied to clear the post-brazing flux residues at the joints.
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