Authors:
Paria Karimi (1), Esmaeil Sadeghi (1)
1- OptiFab Technologies, Ontario, Canada
Abstract:
This study investigates the influence of novel scan patterns on the microstructure and hardness of γ-TiAl base alloy manufactured using the electron beam-powder bed fusion process. Different scan patterns were explored for their effects on thermal history and heat transfer, resulting in diverse microstructures from fully lamellar to duplex structures. As-built samples with varied scan patterns underwent hardness testing, elucidating differences in hardness qualities. The formation mechanisms of desired microstructures for each scan pattern were extensively examined. The findings provide a valuable framework for tailoring materials with specific microstructures and performance attributes by adjusting scan patterns during electron beam-powder bed fusion, with significant implications for future applications.
DOI:
https://doi.org/10.59499/EP246282019
