Oligocrystalline material

Oligocrystalline material owns a microstructure consisting of a few coarse grains, often columnar and parallel to the longitudinal ingot axis. This microstructure can be found in the ingots produced by electron beam melting (EBM).[1]

References

Sandim, Hugo R.Z; Padilha, Angelo F; Randle, Valerie; Blum, Wolfgang (1999). "Grain subdivision and recrystallization in oligocrystalline tantalum during cold swaging and subsequent annealing". International Journal of Refractory Metals and Hard Materials. 17 (6): 431. doi:10.1016/S0263-4368(99)00035-9.

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[1] Sandim, Hugo R.Z; Padilha, Angelo F; Randle, Valerie; Blum, Wolfgang (1999). "Grain subdivision and recrystallization in oligocrystalline tantalum during cold swaging and subsequent annealing". International Journal of Refractory Metals and Hard Materials. 17 (6): 431. doi:10.1016/S0263-4368(99)00035-9.