Elastic modulus, biaxial fracture strength, electrical and thermal transport properties of thermally fatigued hot pressed LAST and LASTT thermoelectric materials

► Thermoelectric waste heat recovery applications involve thermal fatigue. ► No thermal fatigue data for thermoelectrics is available in the literature. ► This study includes thermal fatigue data two PbTe-based thermoelectrics. ► The fracture strength the thermally fatigued LASTT ranged from 25 to 40 MPa ► The fracture strength the thermally fatigued LAST ranged from 15 to 38 MPa.