Relationship between yield strength and grain size for a bimodal structural ultrafine-grained ferrite/cementite steel

被引：95

作者：

Zhao, Ming-Chun ^{[1
]}

Yin, Fuxing

Hanamura, Toshihiro

Nagai, Kotobu

Atrens, Andrej

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Peoples R China

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 305, Japan

[3] Univ Queensland, Div Mat, Brisbane, Qld 4072, Australia

来源：

SCRIPTA MATERIALIA | 2007年 / 57卷 / 09期

关键词：

yield strength; ductility; Hall-Petch relation; ultrafine-grained microstructure;

D O I：

10.1016/j.scriptamat.2007.06.062

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A bimodal ferrite grain size distribution was developed in the microstructure of a warm-rolled ultrafine-grained ferrite/cementite steel by annealing. The yield strength could be illustrated by the Hall-Petch relation, where the appropriate grain size was the average ferrite grain size determined from the area fraction of the inverse of the average grain size in both the large- and small-sized regions. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：857 / 860

页数：4

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