(W+CeO_2)_p/2024Al复合材料锻造性能研究

采用粉末热压工艺制成的(W+CeO2)p/2024Al复合材料作为坯料,对这种复合材料进行锻造性能研究。详细描述55%和78%锻造变形量的复合材料的显微组织形貌,研究不同锻造变形量时复合材料的力学性能和断裂机制。研究分析表明,经过锻造复合材料内部组织致密、颗粒分布比较均匀,具有较高的力学性能。锻造变形量不同,复合材料内部的组织结构不同,导致材料的力学性能相差很大,材料的断裂方式也不同。变形量55%的复合材料显示出明显的韧性断裂,当变形量达到78%时呈脆性断裂。

Study on forged performance of (W+CeO2)p/ 2024A1 composites

Composites as ingot were produced by powder hot-press technology. The forged performance of this composite material was studied in this paper. Microstructures were described when the deformed amounts are 55% and 78% respectively. The mechanical property and fracture process were researched. The results show that the micro-structures are condense and homogeneous after forging. And the forged composites (W+CeO2)p/2024Al have a stronger mechanical property. The different forged amounts have different microstructures,which result in the different mechanical property and fracture process. When the deformed amount is 55%, the fracture mode appears toughness fracture. But the fracture mode is brittleness when the deformed amount reaches 78%.