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The high corrosion aggressiveness of solutions used in the copper lixiviation process and the special care that must be taken to a void the formation o f sensitive phases to those agents, during the stainless s teel welding p rocedures, has demanded n ew stainless s teel developments, with h igher corrosion resistance, keeping their tensile strength, impact strength and ductility. This is the AISI 904L case, a super austenitic of the latest technology stainless steel for which there is no information about it s weldability. Through this r esearch, the weldability and the c ommercial electrodes most suitable are verified. It was found that when they are applied, the sigma phase is strongly reduced. When this stage appears during the welding procedure, the microstructure formed has a high sensitivity to corrosive agents. It was also found that some electrodes solve this problem and keep the mechanical properties of the analyzed steel.

ESTUDIO DE LA SOLDABILIDAD Y CORROSIÓN DEL ACERO INOXIDABLE AISI 904L CON LOS AGENTES UTILIZADOS EN LA LIXIVIACIÓN DEL COBRE