Development of Machinable High-Strength Copper-Based Alloys by Sulfide Dispersion

Katsunari Oikawa; Hiroharu Ido; Hajime Mitsui; Kiyohito Ishida

doi:10.2320/matertrans.44.2088

Development of Machinable High-Strength Copper-Based Alloys by Sulfide Dispersion

Katsunari Oikawa, Hiroharu Ido, Hajime Mitsui, Kiyohito Ishida

ENG - Metallurgy

Tohoku University

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Studies on the properties of Cu-S-Ti and Cu-S-Zr alloys containing 0.8-1.6 at% S, and 0.4-2.7 at% Ti or Zr were carried out. Titanium and zirconium formed (Ti, Cu)S and (Cu, Zr)₂S, respectively, which were uniformly dispersed. Age-hardening phenomena were observed in the alloys having the composition ratio of Ti/S>1 or Zr/S>1, which indicates that the soluble titanium and zirconium in the Cu-matrix after formation of sulfide result in age-hardening. (Ti, Cu)S and (Cu, Zr)₂S were found to be the effective inclusions for improving the machinability. The Cu-S-Ti and Cu-S-Zr alloys developed by sulfide dispersion are very promising as a new type of copper-based alloys having high strength, high electrical conductivity and good machinability.

Original language	English
Pages (from-to)	2088-2093
Number of pages	6
Journal	Materials Transactions
Volume	44
Issue number	10
DOIs	https://doi.org/10.2320/matertrans.44.2088
Publication status	Published - 2003 Oct

Keywords

Electrical conductivity
High strength
Machinability
Titanium sulfide
Zirconium sulfide

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title = "Development of Machinable High-Strength Copper-Based Alloys by Sulfide Dispersion",

abstract = "Studies on the properties of Cu-S-Ti and Cu-S-Zr alloys containing 0.8-1.6 at% S, and 0.4-2.7 at% Ti or Zr were carried out. Titanium and zirconium formed (Ti, Cu)S and (Cu, Zr)2S, respectively, which were uniformly dispersed. Age-hardening phenomena were observed in the alloys having the composition ratio of Ti/S>1 or Zr/S>1, which indicates that the soluble titanium and zirconium in the Cu-matrix after formation of sulfide result in age-hardening. (Ti, Cu)S and (Cu, Zr)2S were found to be the effective inclusions for improving the machinability. The Cu-S-Ti and Cu-S-Zr alloys developed by sulfide dispersion are very promising as a new type of copper-based alloys having high strength, high electrical conductivity and good machinability.",

keywords = "Electrical conductivity, High strength, Machinability, Titanium sulfide, Zirconium sulfide",

author = "Katsunari Oikawa and Hiroharu Ido and Hajime Mitsui and Kiyohito Ishida",

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T1 - Development of Machinable High-Strength Copper-Based Alloys by Sulfide Dispersion

AU - Oikawa, Katsunari

AU - Ido, Hiroharu

AU - Mitsui, Hajime

AU - Ishida, Kiyohito

PY - 2003/10

Y1 - 2003/10

N2 - Studies on the properties of Cu-S-Ti and Cu-S-Zr alloys containing 0.8-1.6 at% S, and 0.4-2.7 at% Ti or Zr were carried out. Titanium and zirconium formed (Ti, Cu)S and (Cu, Zr)2S, respectively, which were uniformly dispersed. Age-hardening phenomena were observed in the alloys having the composition ratio of Ti/S>1 or Zr/S>1, which indicates that the soluble titanium and zirconium in the Cu-matrix after formation of sulfide result in age-hardening. (Ti, Cu)S and (Cu, Zr)2S were found to be the effective inclusions for improving the machinability. The Cu-S-Ti and Cu-S-Zr alloys developed by sulfide dispersion are very promising as a new type of copper-based alloys having high strength, high electrical conductivity and good machinability.

AB - Studies on the properties of Cu-S-Ti and Cu-S-Zr alloys containing 0.8-1.6 at% S, and 0.4-2.7 at% Ti or Zr were carried out. Titanium and zirconium formed (Ti, Cu)S and (Cu, Zr)2S, respectively, which were uniformly dispersed. Age-hardening phenomena were observed in the alloys having the composition ratio of Ti/S>1 or Zr/S>1, which indicates that the soluble titanium and zirconium in the Cu-matrix after formation of sulfide result in age-hardening. (Ti, Cu)S and (Cu, Zr)2S were found to be the effective inclusions for improving the machinability. The Cu-S-Ti and Cu-S-Zr alloys developed by sulfide dispersion are very promising as a new type of copper-based alloys having high strength, high electrical conductivity and good machinability.

KW - Electrical conductivity

KW - High strength

KW - Machinability

KW - Titanium sulfide

KW - Zirconium sulfide

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JO - Materials Transactions

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Development of Machinable High-Strength Copper-Based Alloys by Sulfide Dispersion

Abstract

Keywords

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