In situ synthesis of Ti 3 Al matrix in SiC fibre reinforced composites

Abstract

The present work deals with in situ synthesis of Ti₃Al matrix in SiC fibre reinforced composites. In this process, the matrix coated fibres were prepared through magnetron sputtering by using inexpensive titanium and aluminium, and then Ti₃Al matrix could be obtained by in situ synthesis in the subsequent hot isostatic pressing. The results indicated that the fibre volume fraction of the composites could reach 68 using physical vapour deposition, and the microstructure of in situ formed Ti₃Al matrix was fine equiaxed grain. Furthermore, the preparation process of SiC fibre reinforced Ti₃Al matrix composites was simplified which had a potential for cost reduction.