Oxidation Behaviour of Laser Remelted Cr-containing Steels

Guanyan FU Weitao WU Maocai WANG Shenglong ZHU Corrosion science Lab,Institute of Corrosion and Protection of Metals,Academia Sinica,Shenyang 110015,China

摘 要：<正> Laser surface remelting of steels with different Cr contents has been performed by using a CO₂ laser.The results of oxidation tests showed that the effects of laser remelting on the oxidation resistance ofCr-containing steels have close relation to the Cr contents and microstructures of the steels. The re-sistance to high temperature oxidation of 18-8 and HK40 at 1273 K can be obviously improved bylaser remelting, whereas laser remelting showed little effect on the oxidation resistance of Fe-6Crand Cr30 at 1173-1273 K.

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