Chemical misfit origin of solute strengthening in iron alloys
Chemical misfit origin of solute strengthening in iron alloys
复制标题
铁合金中溶质强化的化学失配起源
DOI:
10.1016/j.actamat.2017.04.017
复制
发表时间:
2017
期刊:
影响因子:
9.4
通讯作者:
M. Itakura and S. Ogata
中科院分区:
文献类型:
--
作者:
M. Wakeda;T. Tsuru;M. Kohyama;T. Ozaki;H. Sawada;M. Itakura and S. Ogata
In this first-principles study, we investigate the effect of many kinds of substitutional solute species on screw dislocation motion in bcc-Fe, dominating the strength of dilute Fe alloys. Most of the solute species show a significant interaction with the dislocation core, while only several solute species among them, such as Si, P, and Cu, significantly lower the Peierls potential of the screw dislocation motion. A first-principles interaction energy with the “Easy-core” structure excellently correlates with the change in theγ-surface caused by solute atoms (i.e., chemical misfit). Based on the interaction energy, we predicted the effect of each species on macroscopic critical resolved shear stress (CRSS) of the dilute Fe alloy. The CRSS at low and high temperature for various alloys basically agree with experiment CRSS. These results provide a novel understanding of the interaction between a screw dislocation and solute species from the first-principles.
登录
查看更多内容
DOI:
10.1016/0001-6160(67)90392-6
发表时间:
1967
期刊:
Acta Metallurgica
影响因子:
--
作者:
S. Takeuchi;E. Furubayashi;T. Taoka
通讯作者:
T. Taoka
影响因子:
9.4
作者:
Amodeo, J.;Carrez, Ph.;Cordier, P.
通讯作者:
Cordier, P.
DOI:
10.1299/transjsme.2014cm0018
发表时间:
2014
期刊:
--
影响因子:
--
作者:
K. Kinoshita;T. Shimokawa;T. Kinari;H. Sawada;K. Kawakami;K. Ushioda
通讯作者:
K. Ushioda
影响因子:
3.7
作者:
Ozaki, T;Kino, H
通讯作者:
Kino, H
影响因子:
1.7
作者:
T. Taoka;S. Takeuchi;E. Furubayashi
通讯作者:
E. Furubayashi