Development of Joining and Forming Process for partially Reinforced Metal Matrix Composite Product

研究了粉末金属的高温压缩和压缩扭转两种成形工艺，以开发同时连接和成形部分增强金属基复合材料制品的新工艺。研究结果如下：1.铝基复合材料和铝合金可以同时连接在一起并形成一体。平面应变压缩变形试件的连接强度高于单轴压缩变形试件。需要高于50%的压下率和高于673K的温度才能获得合适的连接强度。通过随后的T6热处理，连接强度提高了约一倍。扭压成形工艺1.通过将合金粉末和陶瓷颗粒的混合物进行固结，可以制备出部分颗粒增强金属基复合材料制品。可以在传统的合金金属上加固和连接金属基复合材料。在这两种工艺中，具有较低流动应力的材料容易变形和固结。

Two forming processes, they were a high temperature compression and a compressive torsion forming for powder metal, were investigated in order to develope new processes for simultaneous joining and forming of partially reinforced metal matrix composite products. The results were as follows ;<<High temperature compression process>>1. An aluminum matrix composite and an aluminum alloy can be simultaneously joined and formed together in one body.2. The joining strength of the specimen deformed by a plane strain compression was higher than that by an uniaxial compression. The higher reduction than 50% and higher temperature than 673K were required to get suitable joining strength.3. The joining strength was increased about twice by subsequent T6 heat treatment.<<Torsional compression forming process>>1. Partially particle reinforced metal matrix composite products can be fabricated by consolidation of an alloy powder and a mixture with ceramic particle.2. It is possible to consolidate and join a metal matrix composite on a conventional alloy metal.3. In both processes, the material with lower flow stress was easily deformed and consolidated.