Effect of solute copper on yield strength in dislocation-strengthened steels

Junaidi Syarif, Koichi Nakashima, Toshihiro Tsuchiyma, Setsuo Takaki

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The effect of copper atoms in solid solution (solute Cu) on yield strength was investigated in dislocation-strengthened steels such as a martensitic steel and a work-hardened steel, which have high dislocation density. The yield strength of the martensitic steel increases with increasing content of the solute Cu. However, the increment of the yield strength by the solute Cu is smaller in the martensitic steel than in the ferritic steel. Dislocation density of the martensitic steel increases with increasing Cu content and the yield strength is also enhanced depending on the dislocation density. The increment of the yield strength can be reasonably explained by the dislocation strengthening mechanism based on the Bailey-Hirsch relationship. In the work-hardened ferritic steel, the solid solution strengthening by Cu is significant when the dislocation density is low, but it tends to disappear with increasing the dislocation density through cold-rolling. These are indicative of the facts that the yield strength of the dislocation-strengthened steel is determined by the dislocation strengthening and the contribution of the solute Cu on the yield strength disappears owing to high dislocation density.

Original languageEnglish
Pages (from-to)340-345
Number of pages6
Journalisij international
Volume47
Issue number2
DOIs
Publication statusPublished - Apr 25 2007

Fingerprint

Steel
Yield stress
Copper
Martensitic steel
Ferritic steel
Solid solutions
Cold rolling
Atoms

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Effect of solute copper on yield strength in dislocation-strengthened steels. / Syarif, Junaidi; Nakashima, Koichi; Tsuchiyma, Toshihiro; Takaki, Setsuo.

In: isij international, Vol. 47, No. 2, 25.04.2007, p. 340-345.

Research output: Contribution to journalArticle

Syarif, Junaidi ; Nakashima, Koichi ; Tsuchiyma, Toshihiro ; Takaki, Setsuo. / Effect of solute copper on yield strength in dislocation-strengthened steels. In: isij international. 2007 ; Vol. 47, No. 2. pp. 340-345.
@article{07daa20ed5cf4c3589d86736e97da0ac,
title = "Effect of solute copper on yield strength in dislocation-strengthened steels",
abstract = "The effect of copper atoms in solid solution (solute Cu) on yield strength was investigated in dislocation-strengthened steels such as a martensitic steel and a work-hardened steel, which have high dislocation density. The yield strength of the martensitic steel increases with increasing content of the solute Cu. However, the increment of the yield strength by the solute Cu is smaller in the martensitic steel than in the ferritic steel. Dislocation density of the martensitic steel increases with increasing Cu content and the yield strength is also enhanced depending on the dislocation density. The increment of the yield strength can be reasonably explained by the dislocation strengthening mechanism based on the Bailey-Hirsch relationship. In the work-hardened ferritic steel, the solid solution strengthening by Cu is significant when the dislocation density is low, but it tends to disappear with increasing the dislocation density through cold-rolling. These are indicative of the facts that the yield strength of the dislocation-strengthened steel is determined by the dislocation strengthening and the contribution of the solute Cu on the yield strength disappears owing to high dislocation density.",
author = "Junaidi Syarif and Koichi Nakashima and Toshihiro Tsuchiyma and Setsuo Takaki",
year = "2007",
month = "4",
day = "25",
doi = "10.2355/isijinternational.47.340",
language = "English",
volume = "47",
pages = "340--345",
journal = "ISIJ International",
issn = "0915-1559",
publisher = "Iron and Steel Institute of Japan",
number = "2",

}

TY - JOUR

T1 - Effect of solute copper on yield strength in dislocation-strengthened steels

AU - Syarif, Junaidi

AU - Nakashima, Koichi

AU - Tsuchiyma, Toshihiro

AU - Takaki, Setsuo

PY - 2007/4/25

Y1 - 2007/4/25

N2 - The effect of copper atoms in solid solution (solute Cu) on yield strength was investigated in dislocation-strengthened steels such as a martensitic steel and a work-hardened steel, which have high dislocation density. The yield strength of the martensitic steel increases with increasing content of the solute Cu. However, the increment of the yield strength by the solute Cu is smaller in the martensitic steel than in the ferritic steel. Dislocation density of the martensitic steel increases with increasing Cu content and the yield strength is also enhanced depending on the dislocation density. The increment of the yield strength can be reasonably explained by the dislocation strengthening mechanism based on the Bailey-Hirsch relationship. In the work-hardened ferritic steel, the solid solution strengthening by Cu is significant when the dislocation density is low, but it tends to disappear with increasing the dislocation density through cold-rolling. These are indicative of the facts that the yield strength of the dislocation-strengthened steel is determined by the dislocation strengthening and the contribution of the solute Cu on the yield strength disappears owing to high dislocation density.

AB - The effect of copper atoms in solid solution (solute Cu) on yield strength was investigated in dislocation-strengthened steels such as a martensitic steel and a work-hardened steel, which have high dislocation density. The yield strength of the martensitic steel increases with increasing content of the solute Cu. However, the increment of the yield strength by the solute Cu is smaller in the martensitic steel than in the ferritic steel. Dislocation density of the martensitic steel increases with increasing Cu content and the yield strength is also enhanced depending on the dislocation density. The increment of the yield strength can be reasonably explained by the dislocation strengthening mechanism based on the Bailey-Hirsch relationship. In the work-hardened ferritic steel, the solid solution strengthening by Cu is significant when the dislocation density is low, but it tends to disappear with increasing the dislocation density through cold-rolling. These are indicative of the facts that the yield strength of the dislocation-strengthened steel is determined by the dislocation strengthening and the contribution of the solute Cu on the yield strength disappears owing to high dislocation density.

UR - http://www.scopus.com/inward/record.url?scp=34247251310&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34247251310&partnerID=8YFLogxK

U2 - 10.2355/isijinternational.47.340

DO - 10.2355/isijinternational.47.340

M3 - Article

VL - 47

SP - 340

EP - 345

JO - ISIJ International

JF - ISIJ International

SN - 0915-1559

IS - 2

ER -