Möglichkeiten der Kombination von Stoffen durch hohe und höchste Verformung

Possibilities of producing composites by extremely high deformation . One of the principal problem in the studies of composite-wires with metallic matrix was wether fibre textures of such wires are changed by the contents of second phases or not. An inhibition of the texture development of the matrix occours, if the flow stress of the addition is lower than that of the matrix, and the plasticity of the addition is small, compared with that of the matrix. The mechanism of plastic deformation of the second phase (crystal slip, amorphous flow) is without influence. Preparation of the speciment can be done by solidifiction from the melt, especially combined with directional solidification and furtheron by powder metallurgycal methods. A very high decrease of cross section is connected with the formation of fibres. If the diameter is beneath 1000 Å remarcable anomalies of mechanical and physical properties were observed. The compatibility of the different phases is very good, provided that a high and joint deformation occurs. It is caused by the increase of inner surface during deformation.