Distinguishing the ambient-temperature creep region in a deformation mechanism map of annealed CP-Ti

Marked creep behavior is shown by commercially pure titanium (CP-Ti) at an ambient temperature below the yield stress. Creep behavior of CP-Ti was investigated at stress levels below yield stresses with special emphasis on low temperatures down to ambient temperature. The apparent activation energy was determined as about 10 kJ/mol; the apparent stress exponent is about 5.0. Based on these creep parameters, the ambient-temperature creep region was drawn in the Ashby-type deformation mechanism map of annealed CP-Ti.