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Laser surface treatment and corrosion behaviour of martensitic stainless AISI 420 steel

机译：马氏体不锈钢AISI 420钢的激光表面处理和腐蚀行为

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The effect of laser surface treatment of AISI 420 steel was studied. The operation conditions of the laser treatment were optimized with regard to beam power and displacement rate in order to produce different surface microstructures. The corrosion behaviour was studied as a function of the microstructures developed in the material. Maximum hardness was observed in the non-melted and carbide-free zone which was transformed into martensite. The best corrosion behaviour was observed in completely melted areas; this behaviour is similar to that observed in the starting material which is quenched and homogeneously tempered. Heterogeneous zones exist after laser heat treatment which have to be considered for final applications. © 1992.
机译：研究了AISI 420钢的激光表面处理效果。针对光束功率和位移速率优化了激光处理的操作条件，以产生不同的表面微观结构。根据材料中形成的微观结构研究了腐蚀行为。在未熔化且无碳化物的区域中观察到最大硬度，该区域已转变为马氏体。在完全熔化的区域观察到最佳的腐蚀行为；这种行为类似于在淬火和均匀回火的原材料中观察到的行为。激光热处理后存在非均质区，必须考虑将其用于最终应用。 ©1992。

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