Solidification and grain refinement in Ti45Al2Mn2Nb1B subjected to fast cooling

► Solidification of Ti45Al2Mn2Nb1B at high cooling rate was studied. ► Beta remains the primary solidifying phase in the studied cooling rate range. ► High cooling rate affects the onset of boride precipitation and its morphology. ► High cooling rate may change the solidification path. ► Boron addition refines alpha grain size and helps breaking down Burgers OR.