Forging method for high-silver aluminum alloy and high-silver aluminum alloy forged part

A forging method for a high-silver aluminum alloy, comprising the following steps:

• heating the high-silver aluminum alloy to 440° C. to 500° C., and holding for 8 hours to 16 hours to obtain a blank;
• preheating a contact portion of a forging anvil, a tong or a die with the blank to 300° C. to 480° C., and holding the contact portion at that temperature while transferring the blank to a press;
• carrying out six-upsetting six-stretching multidirectional forging deformation on the blank at a pressing speed of the press of 3 mm/s to 10 mm/s, thus obtaining a forging blank, wherein the final forging temperature is 360° C. to 400° C.;
• carrying out forming forging treatment on the forging blank to obtain a forged part;
• and
• carrying out solid solution treatment, residual stress elimination and artificial aging treatment in sequence;
• wherein the high-silver aluminum alloy is prepared from the following components in percentage by weight:
• less than or equal to 0.06% of Si, less than or equal to 0.05% of Fe, 5.6% to 6.8% of Cu, 0.25% to 0.6% of Mg, 0.9% to 1.85% of Ag, 0.2% to 0.4% of Mn, 0.08% to 0.10% of Zr, 0.03% to 0.15% of Ti, and the balance of Al.