J Mater Sci Technol ›› 1993, Vol. 9 ›› Issue (4): 258-262.

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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   

  • Received:1993-07-28 Revised:1993-07-28 Online:1993-07-28 Published:2009-10-10

Abstract: Laser surface remelting of steels with different Cr contents has been performed by using a CO_2 laser. The results of oxidation tests showed that the effects of laser remelting on the oxidation resistance of Cr-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 by laser remelting, whereas laser remelting showed little effect on the oxidation resistance of Fe-6Cr and Cr30 at 1173-1273 K.

Key words: laser remelting, oxidation, Cr-containing steel