  A microstructure-sensitive fatigue life prediction framework based on CP-FFT
is proposed to study SLM fabricated Hastelloy-X. The microstructure enters in
the model through the shape, size and orientation distributions of grains in
the RVEs, which are generated from experimental EBSD data. The framework has
been applied to specimens built in two different directions with different
polycrystalline microstructures and is able to accurately predict their fatigue
life, using just two experiments for calibration. The model reproduces the
better fatigue performance found experimentally at high stresses for samples
built in transverse direction, identifying the origin of this anisotropy in
grain aspect ratios.
