Abdelkrim Redjaïmia (AR) is an Emeritus Professor at the Université de Lorraine, France. AR was a Full Professor at the EEIGM-Ecole Européenne d’Ingénieurs en Génie des Matériaux-Université de Lorraine-Nancy, France. AR is a member of the two following Laboratories: §Institut Jean Lamour, UMR 7198 CNRS, Université de Lorraine, Nancy, France, §Laboratory of Excellence “Design of Alloy Metals for Low-mass Structures” (LabEx-DAMAS), Université de Lorraine, France. AR was elected Member of the INPL Scientific Council and of the Scientific Council office for 2 terms. Currently, he is a member of the Scientific Council of the Research Center In Industrial Technologies (CRTI)-Algeria. AR research interests include both: #solid state phase transformations and structure/property relationship, in metallic alloys (carbon-steel, stainless steels and light alloys (TiAl, Al-Mg), #Transmission electron microscopy (TEM) and electron diffraction (CBED, micro-diffraction.), #Nano-indentation characterisation. Crystallography-Crystal Morphology The more recent evolving areas of AR research include: #Correlation between the fractal dimension and microstructure-mechanical properties of engineering alloys (Fe-C-V & Fe-Ni, ) #Twinning, #Nitrogen metallurgy (Fe-N, Fe-N-Si), #Phase transformations in stainless steels under intense magnetic field (20 Tesla), #HEA (High Entropy Alloys), Refractory-HEA & Light weight HEA, #Multi Component Alloys (MCA). #Lanthanides (Rare Earth).