Last month I took part in the ”9-th Polish-Japanese Joint Seminar on Micro and Nano Analysis” (Sieniawa, 10-13.09.2012). I had an opportunity to present a poster there entitled “Microstructure and microhardness of ball milled/hot pressed aluminium with Mg3N2 addition”, which described my first attempt to produce an AlN reinforcement in situ, in an aluminium matrix (via mechano-chemical solid state reaction).