Studies were made of the symmetric tensile-compressive low cycle fatigue behaviour and theinfluence of dynamic strain aging(DSA)pre-treatment of 18-8 austenitic
The N occupying sites and magnetic structures in R<sub>2</sub>Fe<sub>17</sub>N<sub>x</sub>(R=Y,Dy,Nd)are de-termined by neutron diffraction.The effects of the sit