Fracture toughness assessment at different temperatures and regions within a friction stirred API 5L X80 steel welded plates

Engineering Fracture Mechanics v. 147, p. 176-186, 2015 1.767 10.1016/j.engfracmech.2015.08.006 Ávila, J. A. ; Ruchert, C. O. F. T.; Mei, P. R.; Marinho, R. R.; Paes, M. T. P.; Londono, A. J. R. 2015