Experimental Study of the Interaction between Recrystallization and Precipitation Processes of an AA8011 Commercial Alloy | Zendy

Ney Luiggi | Zendy; M. del V. Valera | Zendy; Jesús P. Rodriguez | Zendy; José Luís Prin | Zendy

Open Access

Experimental Study of the Interaction between Recrystallization and Precipitation Processes of an AA8011 Commercial Alloy

Author(s) -

Ney Luiggi,

M. del V. Valera,

Jesús P. Rodriguez,

José Luís Prin

Publication year - 2014

Publication title -

journal of metallurgy

Language(s) - English

Resource type - Journals

eISSN - 1687-9473

pISSN - 1687-9465

DOI - 10.1155/2014/345945

Subject(s) - recrystallization (geology) , materials science , differential scanning calorimetry , alloy , precipitation , dynamic recrystallization , transmission electron microscopy , seebeck coefficient , microstructure , analytical chemistry (journal) , thermodynamics , metallurgy , composite material , chemistry , geology , nanotechnology , physics , thermal conductivity , hot working , meteorology , chromatography , paleontology

Phase changes in a commercial AA8011 alloy from different initial microstructure conditions were studied using thermoelectric power (ΔS), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM) techniques with the purpose of obtaining evidence of the interaction between recovery-precipitation and recrystallization-precipitation processes occurring during nonisothermal heating at different rates. Thermoelectric power and its thermal derivative reflect this evidence by a displacement of the characteristic precipitation peaks, the recovery and recrystallization contributions remaining masked by the strong incidence of the iron precipitation on that property, while DSC measurements detect the emergence of new peaks not observed on thermograms of homogenized samples. An exhaustive study of these peaks permits direct differentiation between precipitation and recovery-recrystallization contributions. TEM confirms the interaction between both processes by means of local observations

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