Cu-Ni-Sn alloy processing

摘要

A method is disclosed for processing a coppernickel-tin ingot of a composition which at room temperature is in a two-phase state and which at a temperature significantly higher than room temperature but below the melting temperature of the alloy is in a single-phase state. The disclosed method calls for mechanical deformation of the cast ingot in a two-phase state by an amount corresponding to at least 30 percent area reduction and at a temperature above the reversion temperature and near the recrystallization temperature of the alloy. The deformed ingot may subsequently undergo further processing steps such as homogenizing, cold working, and aging.