| 摘要 |
An aluminium alloy suitable as a material for superplastic forming contains 0.8-2.5% or iron, 3.5-6.0% of magnesium, 0.1-0.6% of manganese, 0.05-0.5% of zirconium, at most 6.0% of zinc, at most 3.0% of copper, at most 0.3% of silicon, at most 0.05% of titanium and at most 0.05% of chromium, the remainder being aluminium of commercial purity. The alloy can be processed to give superplastically formable sheets without separate thermomechanical pretreatment.
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