Abstract:
Using Fe
3Al electrodes by manual are surfacing, the Fe
3Al alloy was successfully deposited on a stainless steel surface.The overlaying processes,microstructures and oxidation resistance properties have been investigated and the results show that because of the innate brittleness of Fe
3Al, the Fe
3Al overlay with no appropriate treatment tended to crack. After 500℃ preheating the matrix and 700℃postweld heat treatment, crack-free Fe
3Al overlay can be obtained.The loss of Al element during the welding is relatively la rge, but it didnt impair the oxidation resistance of the Fe
3Al overlay. After oxidized at 800℃ for 70 h in static air, the Fe
3Al overlay was very slightly oxidized, but the oxidation of the stainless Steel matrix was severe.