A. P Gulyaev belongs to the category of scientists who possess a universal knowledge in the field of metal science. In fact his thought worked in virtually any direction the science developed. He has equally mastered the problems of diffusion in solid bodies, alloying, strength and fracture, toughness and brittleness, plasticity and superplasticity, deformation, and heat and chemical heat treatment. He had a rare girl of foreseeing the results, determining the essence of the problems, and making an optimum experiment. Therefore, virtually all his works present undoubted scientific and methodo-logical interest. During his 70-year scientifu: activity he published over 400 works devoted to various problems of metal science. Below we present three of them which characterize his research for almost 40 years, namely, "Cold treatment of steel" (Vestnik Inzhenerov i

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