Artículos de revistas
Microstructure Evaluation Of Uns S32205 Duplex Stainless Steel Friction Stir Welds [avaliação Microestrutural De Juntas Soldadas Por Atrito Com Pino Não-consumível Do Aço Inoxidável Duplex Uns S32205]
Registro en:
Revista Escola De Minas. , v. 66, n. 2, p. 187 - 191, 2013.
3704467
10.1590/S0370-44672013000200008
2-s2.0-84877942712
Autor
Santos T.F.A.
Marinho R.R.
Paes M.T.P.
Ramirez A.J.
Institución
Resumen
UNS S32205 duplex stainless steel welds were performed by friction stir welding (FSW). Advancing and retreating sides showed distinct characteristics in the welded joint. The advancing side shows the strongest grain refinement which is corroborated by microhardness measurements. The microstructure characterization was carried out by optical, scanning and transmission electron microscopy. The thermomechanically affected zone displays austenite islands deformed in a ferrite matrix. The stir zone (SZ) showed a fine recrystallized microstructure providing an outstanding increase of hardness associated with better corrosion performance. Transmission electron microscopy and corrosion tests have corroborated the absence of intermetallic phases on welded joints. 66 2 187 191 (2009) Standard test method for conducting cyclic potentiodynamic polarization measurements for localized corrosion susceptibility of iron-, nickel-, or cobalt-based alloys, , ASTM G61-86, West Conshohocken, PA: ASTM Lippold, J.C., (2005) Welding metallurgy and weldability of stainless steels, pp. 230-263+357. , In: LIPPOLD, J.C. et al. (eds.). Duplex stainless steels. Ohio: John Wiley & Sons, cap. 7 Lo, K.H., Recent developments in stainless steels (2009) Mat. Sci. Eng. R, 65, pp. 39-104 Mishra, R.S., (2007) Friction stir welding and processing, p. 360. , Ohio: ASM International Padilha, A.F., (2005) Encruamento, recristalização, crescimento de grão e textura, p. 232. , São Paulo: Associação Brasileira de Metalurgia e Materiais Paijkull, M., The use of duplex stainless steel grades in tubular products (2008) Steel Stainless Steel World, pp. 71-79 Saeid, T., Effect of friction stir welding speed on the microstructure and mechanical properties of a duplex stainless steel (2008) Materials Science and Engineering A, 496, pp. 262-268 Sato, Y.S., Microstructure and mechanical properties of friction stir welded SAF 2507 super duplex stainless steel (2005) Materials Science and Engineering A, 397, pp. 376-384 Steel, R.J., Friction stir welding of SAF 2507 (UNS S32750) super duplex stainless (2004) Steel Stainless Steel World, 16, pp. 1-16 Tait, S.W., An introduction to eletrochemical corrosion testing for practing engineers and scientists (1994) Pair Docs Publications