Microstructure Evolution of 1235 Aluminum Alloy During Cold Working
In order to master the rule of microstructure evolution of aluminum double zero foil in the process of cold-rolling,the 1235 aluminum alloy foil billet was studied in this paper,the morphology and size change of the second phase of the 7.0 mm thickness cast-rolling foils during the cold working was investigated.The results showed that the homogenization annealing for the first pass rolled cast-rolling foils does not change the property of the second phase,but only changes the phase size to a certain extent,some precipitates θ(FeAl3)dissolve,the morphology of partial θ precipitates tends to grow up to needle-liked shape;and then the needle-liked structures are broken during cold rolling to 1.8 mm,the needle-liked phases are difficult to be further broken after being broken in the range of 5～8 μm,the"hard and brittle"characteristics of the needle-liked second phases is verified,and the importance of controlling the quantity of the second phase with the size larger than 5 μm during annealing is explained.
1235 aluminum alloydouble zero foilsecond phasehomogenization annealing
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