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研究了由Osprey工艺制取的喷射沉积Cu-24Pb-1Sn合金板坯的显微结构、弯曲断口的表面形态和冷轧变形对合金密度的影响。结果表明:喷射沉积合金的铅相细小且均匀分布,消除了宏观偏析。冷轧后,板坯的相对密度可由沉积态的96%提高到100%。本文还讨论了合金的重力偏析和喷射沉积过程的液-团相比率控制问题。
The microstructure, the surface morphology and the cold deformation of spray-deposited Cu-24Pb-1Sn alloy slabs prepared by Osprey process were investigated. The results show that the lead phase of spray deposited alloy is fine and uniform, eliminating the macro-segregation. After cold rolling, the relative density of slabs can be increased from 96% of the as-deposited state to 100%. The article also discusses the liquid-mass ratio control of gravimetric and spray deposition processes.