| 摘要 |
A method of continuously manufacturing a hot-formed heat-treatable aluminum base alloy product having a substantially extended shelf life comprises casting a molten aluminum base alloy metal, cooling the cast metal during casting at a rate at which inverse segregation will be substantially minimized, raising the temperature of the cast metal, prior to the initiation of the hot forming, to a temperature above the temperature at which the alloy metals will precipitate substantially, subsequently reducing the metal temperature from the solutionizing temperature of the metal to a temperature at which no substantial immediate precipitation occurs, within a time interval short enough to prevent any substantial precipitation, and so controlling the solution heat treatment time and temperature that the hot-formed product has controlled precipitation during natural aging. |
