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概述了铁在铝硅合金中的存在形态以及对合金力学性能的影响；分析了影响临界铁含量的因素，并归纳了抵消铁有害作用的措施。
The existence of iron in Al-Si alloy and its influence on the mechanical properties of Al-Si alloy were summarized. The factors affecting the critical iron content were analyzed and the countermeasures to counteract the harmful effects of Fe were summarized.