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The effect of heterogeneous deformation on the hot deformation of WE54 magnesium alloy

AuthorsCarsí, Manuel; Bartolomé, Mª. J.; Rieiro, Ignacio; Peñalba, F.; Ruano, Oscar Antonio
KeywordsHot compression
Garofalo equation
Efficiency and stability maps
Magnesium alloy
Issue Date2014
CitationMATERIALS & DESIGN 58: 30- 35 (2014)
AbstractThe high temperature forming behavior of WE54 magnesium alloy is studied by means of compression and tension tests. Metallographic investigation was performed to evaluate the heterogeneous deformation of the compression samples at high temperature. Dynamic recrystallization was found to be related to the amount of deformation in the various regions of the compression sample. The compression data allowed determination of the Garofalo equation describing the hot deformation behavior. The parameters n and Q, stress exponent and activation energy, of this equation were 4.4 and 237. kJ/mol respectively. This equation was used to predict the formability behavior for the hot rolling process and also to determine the maximum forming efficiency and stability of the alloy. The optimum rolling temperature was found to be 520. °C. © 2014 Elsevier Ltd.
Identifiersdoi: 10.1016/j.matdes.2014.01.038
issn: 0261-3069
Appears in Collections:(CENIM) Artículos
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