Process of New Phase Nucleation in Alloys

作     者：Yuri Ustinovshikov 

作者机构：Udmurt Federal Research Center of Russian Academy of Sciences34 Baramzina St.IzhevskRussia 

出 版 物：《材料科学与工程（中英文B版）》 (Journal of Materials Science and Engineering B)

年 卷 期：2021年第11卷第2期

页      面：43-58页

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：“Ordering-phase separation”transition chemical bonds in alloys electronic structure of alloys diffusional micro-pairs TEM(transmission electron microscopy) 

摘      要：The article presents a generalization of our electron microscopic results got on some binary and ternary alloys based on Ni,Fe or *** are considered as the basis for the conclusion that chemical bonds between atoms are realized in alloys according to the principle of pair *** process begins with the separation of the alloy into diffusion micro-pairs already in the liquid state,which makes it possible to consider the liquid state of the alloy as the initial stage of the new phase *** a subsequent decrease in temperature,particles of a new phase form inside a diffusion *** formation of diffusion micro-pairs and phases within them occurs due to the existence in alloys,along with a metallic bond,of ionic and covalent components of a strong chemical bond at all temperatures of the condensed *** article shows what exactly needs to be done so that such a branch of science as materials science could get rid of the empirical approach when creating new alloys.