Cover Page April-2019-Advanced Materials Letters

Advanced Materials Letters

Volume 10, Issue 4, Pages 263-266, April 2019
About Cover

The cover photo describes the ring topological structure of carbon nucleus (using vortex-fractal-ring theory), which consists from two globules with 3 protons globule substructures. As discussed by, this vortex-fractal-ring theory is a new and original view of elementary particles and the structure of atomic nuclei, atoms, and molecules. Its basics are simple for understanding through the comprehensive topological structure that does not need description by complicated mathematical formulas. This theory together with grammatical evolution can design new models of nanostructures and allows us to understand the fundamental physical and chemical reasons for the stability and reactivity of atoms and molecules.


Formation of nano-dispersed Cu particles during aging of a Fe-Cu alloy and dislocation effect

Lili Zhang, Hongxiang Jiang, Jiuzhou Zhao*

Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China

Adv. Mater. Lett., 2019, 10 (4), pp 263-266

DOI: 10.5185/amlett.2019.2119

Publication Date (Web): Jan 10, 2019

E-mail: jzzhao@imr.ac.cn

Abstract

The microstructure evolution in a Fe-Cu alloy with/without pre-deformation during the aging treatment is investigated numerically. The results demonstrate that although the Cu precipitates first nucleate on dislocations, the summit of the nucleation rate occurs in the matrix. Most of Cu particles situate in the matrix immediately after the nucleation. The preferential dissolution of Cu precipitates in the matrix occurs during the Ostwald repining stage, and the vast majority of the residual particles situate on dislocations in an overaged alloy.

Keywords

Fe-Cu alloy, aging, dislocation, precipitation, modeling.

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