Oligocrystalline material

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

References

1. ^ Hugo R.Z Sandim1, Angelo F Padilha, Valerie Randle, Wolfgang Blum. Grain subdivision and recrystallization in oligocrystalline tantalum during cold swaging and subsequent annealing[J].International Journal of Refractory Metals and Hard Materials.1999,17(6):431-435