Aiming at the pinholes in aluminum foil products caused by phase FeAl

3

chemical components were changed and some contrast experiments were carried out with aluminum foil 1235 with different silicon contents.The effects of silicon content on the type

size

morphology and distribution of the second phase were analyzed by optical microscope and scanning electron microscope.The results show that the increase of silicon content in Al 1235 foil is beneficial for generating the phase α

c

-AlFeSi.The phase α

c

-AlFeSi can even replace a kind of acicular FeAl

3

which are helpful for decreasing the pinholes in the foil.Simultaneously

the grains are refined with more uniform of grain size.Tensile strength and elongation of 1235 aluminum foil with silicon content between 13% and 15% are increased by 12.14% and78.57%compared to those ones with low silicon content

which is beneficial for further cold rolling.