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Micro-electrochemical techniques to study the localized corrosion in Al-Cu-Li alloys joined by friction stir welding (FSW)

Grant number: 19/11427-1
Support type:Scholarships abroad - Research Internship - Post-doctor
Effective date (Start): October 01, 2019
Effective date (End): September 30, 2020
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Physical Metallurgy
Principal Investigator:Isolda Costa
Grantee:Rejane Maria Pereira da Silva
Supervisor abroad: Ricardo Manuel Souto Suarez
Home Institution: Instituto de Pesquisas Energéticas e Nucleares (IPEN). Secretaria de Desenvolvimento Econômico (São Paulo - Estado). São Paulo , SP, Brazil
Local de pesquisa : Universidad de La Laguna (ULL), Spain  
Associated to the scholarship:18/06880-6 - Use of localized electrochemical techniques for the study of corrosion of of high strength aluminum alloys joined by friction (FSW), BP.PD

Abstract

This project aims to study the localized corrosion of Al-Cu-Li alloys with high mechanical resistance, aeronautical grade, joined by FSW by means of micro-electrochemical techniques with high spatial resolution, such as the Scanning Electrochemical Microscopy (SECM) in different operation modes and by using ion-selective microelectrodes (ISME). This will allow identifying localized attacks and the formation of galvanic coupling, and studying the effects of microstructural changes resulting from friction stir welding process (FSW) on the corrosion susceptibility of the different zones affected by welding.