Abstract
Fe–Mn–Al–C lightweight steel has promising applications due to its low density and excellent mechanical properties. This study investigates the influence of Cr/Mo on the electrochemical corrosion and wear behavior of lightweight steel. The results showed that adding Cr/Mo significantly improved the corrosion resistance in NaCl/NaHSO3 solution. This improvement was attributed to the presence of protective Cr/Mo oxides and the reduction of harmful Mn oxides, which increased the compactness and charge transfer resistance of the oxide film. The primary wear types of lightweight steels include abrasive, adhesive, fatigue and oxidative wear. The wear test results showed that adding Cr/Mo improved the wear resistance of lightweight steel, which can be attributed to the increased toughness and hardness gradient.
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