AN INTERNAL FRICTION STUDY OF THE MECHANISM OF IMPROVEMENT OF THE PROPERTIES OF Fe-Cr-Al ALLOYS BY THE ADDITION OF A SMALL AMOUNT OF RARE EARTH ELEMENTS Li Wern-bin, Yang Guo-ping, Li Cheng-hsiu et Liu Zheng-qunJ. Phys. Colloques, 42 C5 (1981) C5-469-C5-474DOI: https://doi.org/10.1051/jphyscol:1981570