Fig. 6

EDS maps displaying the element distribution on the AA7075 aluminum alloy surface heat treated at a 25 °C, b 100 °C, c 200 °C and d 300 °C
EDS maps displaying the element distribution on the AA7075 aluminum alloy surface heat treated at a 25 °C, b 100 °C, c 200 °C and d 300 °C