Microstructural and residuals stress analysis of friction stir welding of X80 pipeline steel plates using magnetic barkhausen noise - Ávila Diaz, Julián Arnaldo; Conde, Fabio Faria; Pinto, Haroldo Cavalcanti; Rodriguez, Johnnatan; Grijalba, Freddy Armando Franco (Journal of Nondestructive Evaluation, 2019)