研究了三种纯度的铝及其Ａｌ２％Ｆｅ合金在室温轧制状态下的加工软化行为及软化机理。试验证明：９９．９９６％Ａｌ当轧制率为８０％以上时出现加工软化现象；９９．９６％Ａｌ和９９．６％Ａｌ不发生加工软化。用９９．９９６％Ａｌ配制的Ａｌ２％Ｆｅ合金当轧制率为６０％以上时出现加工软化；用９９．９６％Ａｌ配制的Ａｌ２％Ｆｅ合金当轧制率为９０％以上时出现加工软化；用９９．６％Ａｌ配制的Ａｌ２％Ｆｅ合金不发生加工软化。室温回复是加工软化的主要原因；Ｆｅ有净化铝基体的作用；弥散的第二相有利于室温回复 The softening behavior and softening mechanism of three pure aluminum and its Al2% Fe alloy at room temperature were studied. Experiments show that: 99.996% Al when the rolling rate of 80% or more when the processing softening phenomenon; 99.96% Al and 99.6% Al does not soften the processing. Al  2% Fe alloy prepared with 99.996% Al softening when the rolling rate of 60% or more; with 99.96% Al formulated Al  2% Fe alloy rolling rate of 90% or more Appear softening; with Al-2% Fe alloy formulated with 99.6% Al does not soften the processing. Room temperature recovery is the main reason for softening; Fe has a role in purifying the aluminum matrix; the diffused second phase favors room temperature recovery