喷射沉积8009/SiC_P铝合金的陶粒轧制成形性能研究

Study on Ceramisite Rolling Formation Ability of Spray Deposited 8009/SiC_P Aluminum Alloy

针对喷射沉积铝合金板坯含有一定量的孔隙、直接轧制时易出现板坯表面横裂及边裂的问题,探讨了一种新型的准等静压轧制工艺—陶粒轧制。主要研究在陶粒轧制工艺过程中传压介质对喷射沉积8009/SiCP铝合金板坯轧制成形性能的影响。结果表明,在陶粒轧制过程中合理设计、选取及控制传压介质,避免了板坯轧制变形过程中裂纹的形成,有效地提高了喷射沉积铝合金板坯的轧制成形性能。

Spray deposited aluminum alloy usually contain more than 10vol% porosity that is a great disadvantage for the mechanical properties. In order to prepare fully dense products of high mechanical properties, the porous preforms must be further densified and deformed plastically. But it is difficult for the spray deposited preforms to be densified and deformed plastically without forming surface and edge cracks during conventional rolling. An advanced process of improving rolling ability of spray deposited porous material aluminum alloy ceramisite rolling technology is investigated. The experimental results show that the proper design and selection of the pressure transfer medium can greatly improve the workability of the spray deposited 8009/SiCp aluminum alloy preforms without forming cracks during ceramisite rolling.