The effect of stress and temperautre on primary creep of Ti-47Al-2Nb-1Mn-0.5W-0.5Mo-0.2Si alloy

摘要

In prior studies of primary creep in TiAl, mechanical twinning has consistently been observed to contribute to the primary creep strain. The effect of stress and temperaturre on the process of lamellar refinement resulting from easy mode deformation twinning parallel to lamellar boundary is examined as function of stress, strain and temperature to determine how microstructural evolution and primary creep are related in Ti-47Al-2Nb-1Mn-0.25W-0.5Mo-0.2Si alloy. Mechyanical twinning cocurs in the first 0.2