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在粉末成形的基础上,结合金属半固态加工技术提出了金属/陶瓷复合材料伪半固态触变模锻成形工艺,并成功制备出Al/Al2O3复合材料杯形件。微观组织观察及力学性能分析表明制件微观组织致密、力学性能优异。当铝体积分数增加到37%时,不同成形压力下复合材料制件抗弯强度可达430690 MPa,断裂韧性达8.5-16.8 MPa.m1/2,与原位反应及高温氧化工艺相比抗弯强度及断裂韧性大幅度提高。同时分析了成形温度、成形压力等工艺参数对制件性能的影响。研究结果证明采用该工艺成形金属/陶瓷复合材料是可行的。
On the basis of powder forming, combined with semi-solid metal processing technology, a pseudo-semi-solid thixoforming process of metal / ceramic composite material was proposed and the Al / Al2O3 composite cup was successfully prepared. Microstructure observation and mechanical properties analysis showed that the microstructure of the workpieces was compact and the mechanical properties were excellent. When the volume fraction of aluminum increases to 37%, the flexural strength of composite parts under different forming pressures can reach 430690 MPa and the fracture toughness reaches 8.5-16.8 MPa.m1 / 2. Compared with the in-situ reaction and high temperature oxidation process, the flexural strength Strength and fracture toughness increased significantly. At the same time, the effects of process parameters such as forming temperature and forming pressure on the properties of the parts were analyzed. The results show that it is feasible to form metal / ceramic composites by this process.