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

Translated title of the contribution: Effect of solute copper on yield strength in dislocation-strengthened steels

Junaidi Syarif, Koichi Nakashima, Toshihiro Tsuchiyama, Setsuo Takaki

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The effect of solute Copper (Cu) on yield strength was investigated in dislocation-strengthened iron such as martensitic steels and cold-rolled steels having various dislocation densities. Yield strength of the Cu bearing martensitic steels increases with increasing the solute Cu content. However, the increment of yield strength by Cu solid solution is smaller in the martensitic steels than in the ferritic steels. Dislocation density of martensitic steels increases with increasing Cu content, and yield strength is also enhanced depending on the dislocation density. The increment of yield strength can be reasonably explained by dislocation strengthening mechanism based on Bailey-Hirsch relationship. In the cold-rolled Cu bearing ferritic steels, the strengthening by Cu solid solution is significant but it tends to disappear with increasing the dislocation density. These facts indicate that yield strength of the steels with high dislocation density is determined by dislocation strengthening and the contribution of Cu solid solution disappears due to the high density of dislocations.

Original languageUndefined/Unknown
Pages (from-to)790-795
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume91
Issue number11
Publication statusPublished - Nov 2005
Externally publishedYes

Fingerprint

Steel
yield strength
Yield stress
Copper
Martensitic steel
solutes
steels
copper
Bearings (structural)
Solid solutions
Ferritic steel
solid solutions
Iron
iron

Keywords

  • Cu bearing steel
  • Dislocation strengthening
  • Solid solution strengthening
  • Yield strength

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

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

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 91, No. 11, 11.2005, p. 790-795.

Research output: Contribution to journalArticle

Syarif, Junaidi ; Nakashima, Koichi ; Tsuchiyama, Toshihiro ; Takaki, Setsuo. / Effect of solute copper on yield strength in dislocation-strengthened steels. In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan. 2005 ; Vol. 91, No. 11. pp. 790-795.
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N2 - The effect of solute Copper (Cu) on yield strength was investigated in dislocation-strengthened iron such as martensitic steels and cold-rolled steels having various dislocation densities. Yield strength of the Cu bearing martensitic steels increases with increasing the solute Cu content. However, the increment of yield strength by Cu solid solution is smaller in the martensitic steels than in the ferritic steels. Dislocation density of martensitic steels increases with increasing Cu content, and yield strength is also enhanced depending on the dislocation density. The increment of yield strength can be reasonably explained by dislocation strengthening mechanism based on Bailey-Hirsch relationship. In the cold-rolled Cu bearing ferritic steels, the strengthening by Cu solid solution is significant but it tends to disappear with increasing the dislocation density. These facts indicate that yield strength of the steels with high dislocation density is determined by dislocation strengthening and the contribution of Cu solid solution disappears due to the high density of dislocations.

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