Quantum-Chemical Investigation of the Effect of Grain-Boundary Segregation on Wear Resistance of Steel

被引：5

作者：

Kolesnikov, V. I. ^{[1
]}

Migal, Yu. F. ^{[2
]}

Mizhiritskaya, S. N. ^{[1
]}

Doron'kin, V. N. ^{[1
]}

机构：

[1] Rostov State Univ Commun, Rostov Na Donu 344038, Russia

[2] Russian Acad Sci, So Sci Ctr, Rostov Na Donu 344006, Russia

来源：

JOURNAL OF FRICTION AND WEAR | 2008年 / 29卷 / 02期

关键词：

wear resistance of steel; grain-boundary segregation; quantum-chemical analysis; doping elements;

D O I：

10.3103/S1068366608020049

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Quantum-chemical calculations of polyatomic clusters modeling the grain boundaries in the surface layer of steel are presented. Along with iron atoms, the clusters contain atoms of doping and impurity elements yielded to the boundary due to grain-boundary segregation. The effect of the chemical composition of segregants on the bond strength between the grains and, ultimately, on the wear resistance of steel is investigated. It is shown that the bond strength of segregated atoms with iron atoms in the surface layer of a metal is a substantial factor affecting the wear resistance.

引用

页码：99 / 107

页数：9

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