铸态和固溶化处理的ADC12铝合金在90℃水蒸汽中的腐蚀试 验表明:铸态铝合金基体腐蚀是以Al-Cu为基的第二相化合物,而以Al-Fe为基的化合物不会 引起基体腐蚀;经固溶化处理的铝合金基体腐蚀是由Al-Fe为基的化合物引起的,并且是以 含Cu的Al-Fe化合物周围优先被腐蚀.
Corrosion behavior of as-cast ADC12 aluminum alloy and ADC12 aluminum alloy after solution heat treatment in aqueous vapor at 94℃ was studied.The results show that for as-cast aluminum alloy,the corrosion of al uminum alloy matrix is caused by the Al-Cu second-phase compound.For aluminum al loy after solution heat treatment,the corrosion of aluminum alloy is caused by t he Al-Fe compound,furthermore,the matrix around the phase pasticles containing m ore Cu is prior to be corroded.
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