Abstract
Fatigue and fracture under multiaxial stresses are among the most important currentresearch topics aimed at ensuring improved reliability of industrial components. An ex situin-plane biaxial low cycle fatigued sample of cruciform geometry from austenitic stainlesssteel AISI 321 H was investigated on the FSD stress-diffractometer at the IBR-2 pulsednuclear reactor by using the neutron strain scanner and the uniaxial stress rig. The phasecomposition of fatigued material was determined and the residual macrostresses and phasemicrostresses were measured. To the best of our knowledge, no neutron diffractioninvestigations of materials subjected to biaxial loading have been previously carriedout. The first results of the neutron diffraction experiment are presented anddiscussed.
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