Hot stamping of AA7075 aluminum sheets

IDDRG2016 conference on "Challenges in Forming High-Strength Sheets".

Mendiguren, J.^1 ; De Argandona, .E Saenz^1 ; Galdos, L.^1

Mechanical and Manufacturing Department, Mondragon University, Loramendi 4, Arrasate-Mondragon

20500, Spain^1

关键词: Automotive component;    High strength aluminium alloys;    Hot stamping process;    Hot-stamping;    Material conditions;    Thermal process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/159/1/012026/pdf
DOI  :  10.1088/1757-899X/159/1/012026

来源: IOP

【 摘 要 】

In this work the formability of a high strength aluminium alloy (AA7075-T6) for the stamping of an automotive component has been studied. Due to the low formability of the selected alloy, two different heat assisted forming strategies have been analysed. On the one hand, the W-temper process, where the thermal process is carried out prior to the forming operation. On the other hand, the hot stamping process, where the thermal process is carried out at the same time as the forming. The results showed that both technology were able to form the component avoiding any failure of the material. On the contrary, both processes reduced the final mechanical properties of the material compared to the as received material condition. However, the obtained mechanical properties doubled the strength of commonly used 5xxx and 6xxx aluminium alloys.