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

为了开发部分增强金属基复合材料制品同时连接和成形的新工艺，对粉末金属的高温压缩和压缩扭转成形两种成形工艺进行了研究。结果如下：&lt;<High temperature compression process>&gt;1.铝基复合材料和铝合金可以同时连接并形成一体。平面应变压缩试样的连接强度高于单轴压缩试样。为了获得合适的连接强度，要求压下量大于50%，连接温度高于673 K.经T6热处理后，接头强度提高了约2倍。&lt;<Torsional compression forming process>&gt;1.部分颗粒增强金属基复合材料产品可以通过合金粉末和陶瓷颗粒的混合物的固结来制造。可以在常规合金金属上固结和连接金属基复合材料。在这两个过程中，低流动应力的材料更容易变形和固结。

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.