TY - JOUR AU - Akhlaghi, Maryam AU - Salahi, Esmaeil AU - Tayebifard, Seyed Ali AU - Schmidt, Gert PY - 2021/09/26 Y2 - 2024/03/28 TI - Role of Ti3AlC2 MAX phase on characteristics of in-situ synthesized TiAl intermetallics. Part I: sintering and densification JF - Synthesis and Sintering JA - Synth. Sinter. VL - 1 IS - 3 SE - Articles DO - 10.53063/synsint.2021.1347 UR - https://synsint.com/index.php/synsint/article/view/47 SP - 169-175 AB - Five TiAl–Ti3AlC2 composite samples containing (10, 15, 20, 25 and 30 wt% Ti3AlC2 MAX phase) were prepared by spark plasma sintering technique at 900 °C for 7 min under 40 MPa. For this purpose, metallic titanium and aluminum powders (aiming at the in-situ formation of the TiAl matrix phase) were ball-milled with predetermined contents of Ti3AlC2 MAX phase, which already was synthesized using the same metallic powders as well as graphite flakes. Displacement-time-temperature variations during the heating and sintering steps, displacement rate versus temperature, displacement rate versus time, and densification behavior were studied. Two sharp changes were detected in the diagrams: the first one, ~16 min after the start of the heating process due to the melting of Al, and the second one, after ~35 min because of the sintering progression and the applied final pressure. The highest relative densities were measured for the samples doped with 20 and 25 wt% Ti3AlC2 additives. More Ti3AlC2 addition resulted in decreased relative density because of the agglomeration of MAX phase particles. ER -