Revista Facultad de Ingeniería - Universidad de Tarapacá
versión On-line ISSN 0718-1337
CORTES P, Ramón et al. ESTUDIO DE LA SOLDABILIDAD Y CORROSIÓN DEL ACERO INOXIDABLE AISI 904L CON LOS AGENTES UTILIZADOS EN LA LIXIVIACIÓN DEL COBRE. Rev. Fac. Ing. - Univ. Tarapacá [online]. 2004, vol.12, n.2, pp. 43-56. ISSN 0718-1337. http://dx.doi.org/10.4067/S0718-13372004000200007.
The high corrosion aggressiveness of solutions used in the copper lixiviation process and the special care that must be taken to avoid the formation of sensitive phases to those agents, during the stainless steel welding procedures, has demanded new stainless steel developments, with higher 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 its weldability. Through this research, the weldability and the commercial 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
Palabras llave : Welding; stainless steel; super autenitic; mining.