Akademik Veri Yönetim Sistemi
4th International Symposium on Characterization (ISC’24) 16-18 October 2024, Sakarya, Türkiye, Sakarya, Türkiye, 16 - 18 Ekim 2024, ss.1-11
This study examined the microstructural characteristics of compositionally graded graphite-reinforced Ti6Al4V metal matrix composites fabricated through pressure-assisted sintering. Composite powders of Ti6Al4V, comprising 10 wt. % graphite, were synthesized by blending Ti6Al4V alloy powders with graphite powders (-100 µm) in a ball mill. Compositionally graded graphite reinforced Ti6Al4V metal matrix composite samples, consisting of a 1000 µm thick top layer with the prepared Ti6Al4V/graphite composite powders and a 3000 µm thick bottom layer using Ti6Al4V powders, were produced by sintering in a vacuum environment under 45 MPa pressure, at 950°C temperature and for 45 minutes. Optical and transmission electron microscopy studies revealed that micron and submicron-sized graphite particles were uniformly distributed within the Ti6Al4V metal matrix. A significant proportion of α phase and a minimal proportion of β phase were noted in the microstructure, with graphite particles predominantly located at the matrix particle boundaries. The existence of TiC phase with grain sizes under 50 nm between the matrix and graphite revealed robust metallurgical bond formation between the matrix and graphite.