Artículos de revistas
Dendritic Microstructure Affecting Mechanical Properties And Corrosion Resistance Of An Al-9 Wt% Si Alloy
Registro en:
Materials And Manufacturing Processes. , v. 22, n. 3, p. 328 - 332, 2007.
10426914
10.1080/10426910701190345
2-s2.0-33947627541
Autor
Goulart P.R.
Osorio W.R.
Spinelli J.E.
Garcia A.
Institución
Resumen
It has been reported that the mechanical properties and corrosion resistance of metallic alloys depend strongly on the solidification microstructural arrangement. The correlation of corrosion behavior and mechanical properties with microstructure parameters can be very useful for planning solidification conditions in order to achieve desired final properties. The aim of the present work is to investigate the influence of dendritic microstructural parameters of an Al-9wt.% Si alloy on mechanical properties and corrosion resistance. The experimental results establish correlations between secondary dendrite arm spacings (2) and ultimate tensile strength (u), yield strength (y), corrosion potential (ECorr), and corrosion rate (iCorr). 22 3 328 332 Petch, N.J., The cleavage strength of polycrystals (1953) J. Iron Steel Inst, 174, pp. 25-31 Donelan, P., Modeling microstructural and mechanical properties of ferritic ductile cast iron (2000) Mater. Sci. Technol, 16, pp. 261-269 Osório, W.R., Santos, C.A., Quaresma, J.M.V., Garcia, A., Mechanical properties as a function of thermal parameters and microstructure of Zn-Al castings (2003) J. Mater. Proc. Technol, 143, pp. 703-709 Quaresma, J.M.V., Santos, C.A., Garcia, A., Correlations between unsteady-state solidification conditions, dendrite spacings, and mechanical properties of Al-Cu alloys (2000) Metall. Mater. Trans. A, 31, pp. 3167-3178 Osório, W.R., Freire, C.M., Garcia, A., The effect of the dendritic microstructure on the corrosion resistance of Zn-Al alloys (2005) J. Alloys Compd, 597, pp. 179-191 Osório, W.R., Spinelli, J.E., Cheung, N., Garcia, A., Secondary dendrite arm spacing and solute redistribution effects on the corrosion resistance of Al-10wt%Sn and Al-20wt%Zn alloys (2006) Mater. Sci. Eng. A, 420, pp. 179-186 Rao, S.R.K., Reddy, G.M., Rao, K.S., Kamaraj, M., Rao, K.P., Reasons for superior mechanical and corrosion properties of 2219 aluminum alloy electron beam welds (2005) Mater. Charact, 55, pp. 345-354 Osório, W.R. Freire, C.M. Garcia A. Effects of the longitudinal and transversal structural grain morphologies upon the corrosion resistance of Zn and Al specimens. Rev. Metal. Madrid. 2005, extra, 176-180Osório, W.R., Freire, C.M., Garcia, A., The role of macrostructural morphology and grain size on the corrosion resistance of Zn and Al castings (2005) Mater. Sci. Eng. A, 402, pp. 22-32 Song, G., Atrens, A., Dargusch, M., Influence of micro structure on the corrosion of diecast AZ91D (1999) Corros. Sci, 41, pp. 249-273 Song, G., Bowles, A.L., St John, D.H., Corrosion resistance of aged die cast magnesium alloy AZ91D (2004) Mater. Sci. Eng. A, 366, pp. 74-86 Standard recommended practice for conventions applicable to electrochemical measurements in corrosion tests (1989), ASTM G3Rooy, E.L. Aluminum and aluminum alloys. Metals Park, OH, Castings. Metals Handbook ASM International. 1988, 15, 815