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

为开发部分增强金属基复合材料同时连接成形的新工艺，对粉末金属的高温压缩和压缩扭转两种成形工艺进行了研究。实验结果如下：<<高温压缩过程>>1。铝基复合材料和铝合金可以同时结合在一起形成一体。平面应变压缩后试件的连接强度高于单轴应变压缩后试件的连接强度。要获得合适的连接强度，需要50%以上的还原率和673K以上的温度。后续的T6热处理使接头强度提高了约2倍。<<扭压成形过程>>部分颗粒增强金属基复合材料产品可通过合金粉末与陶瓷颗粒混合物的固结制备。在传统的合金金属上巩固和连接金属基复合材料是可能的。在这两种过程中，流动应力较低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.