Microstructure and low cycle fatigue of a Ti2AlNb-based lightweight alloy

Yinling Zhang, Aihan Feng, Shoujiang Qu, Jun Shen, Daolun Chen

Table 2 Low cycle fatigue parameters of the as-cast Ti2AlNb-based alloy.

Low cycle fatigue parameters Symbol Value Cycle strain hardening exponent n’ 0.09 Cyclic strength coefficient, MPa K’ 1366 Fatigue strength coefficient, MPa σ'f 1369 Fatigue strength exponent b -0.077 b[Morrow] -0.060 b [Tomkins] -0.072 Fatigue ductility coefficient, % ε'f 0.44 Fatigue ductility exponent c -0.82 c[Morrow] -0.70 c [Tomkins] -0.86