Molecular Dynamics Simulation of the Edge Dislocation Glide in Nickel and Silver in the Presence of Interstitial Light Element Atoms

被引：2

作者：

Poletaev, G. M. ^{[1
]}

Zorya, I. V. ^{[2
]}

Starostenkov, M. D. ^{[1
,3
]}

Bebikhov, Yu. V. ^{[3
]}

Rakitin, R. Yu. ^{[4
]}

机构：

[1] Altai State Tech Univ, Barnaul 656038, Russia

[2] Siberian State Ind Univ, Novokuznetsk 654006, Russia

[3] Northeastern Fed Univ, Polytech Inst Branch, Mirnyi 678170, Russia

[4] Altai State Univ, Barnaul 656049, Russia

来源：

RUSSIAN METALLURGY | 2020年 / 2020卷 / 04期

关键词：

molecular dynamics; fcc metal; impurity; partial dislocation; dislocation glide; TRIPLE JUNCTIONS; FE;

D O I：

10.1134/S0036029520040217

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The edge dislocation glide velocity in fcc metals (nickel, silver) is studied at various temperatures, tangential stresses, and contents of interstitial atoms of light elements (carbon, nitrogen, oxygen) by molecular dynamics simulation. The glide velocity of partial dislocations in pure metals decreases with increasing temperature at low tangential stresses (similar to 10 MPa) and increases at relatively high tangential stresses (similar to 10(2) MPa or higher). The introduction of interstitial atoms retards dislocation glide. This effect is more pronounced in nickel than in silver, which is mainly due to the difference in the lattice parameters: the lattice parameter of nickel is smaller than that of silver.

引用

页码：271 / 276

页数：6