ボロン繊維強化アルミニウムマトリックス複合材料の調製とその変形・破断挙動

抄録

Strong boron fibre-reinforced aluminium matrix composites will be obtained by the hot-pressing technique, if the interfacial conditions are controlled within the range of temperature and time where degradation of fibres due to the interfacial reaction is not caused. On the basis of this idea composite specimens were prepared. It was found that the hot-pressing at 773 K for 1.2 ks under a pressure of 50 MPa gave rise to a strong interfacial bonding but not degradation of the fibres due to the interfacial reaction, yielding high strength composites. The tensile behawiour of the composites with various interfacial conditions were investigated. The effects of interfacial conditions on the deformation and fracture behaviour of the composites were well understood by the experimental results and the results of the computer simulation.