Synthesis and characteristics of precipitation hardened Cu-Cr alloy and multiply hardened Cu-Cr-Al2O3 nanocomposite obtained using powder metallurgy techniques
Abstract
The hardening of copper alloy by using powder metallurgy techniques and analysis of its effects on the strength of obtained material are discussed. Prealloyed Cu-0.5 wt.% Cr powder and mechanically alloyed Cu-0.5 wt.% Cr-3 wt.% Al2O3 powder were consolidated by means of hot pressing. Optical microscopy, scanning electron microscopy and transmission electron microscopy were used for microstructure characterization of compacts. Hardness and electrical conductivity of both compacts were compared. High strengthening of the Cu-Cr compacts is achieved by aging as a consequence of the influence of precipitation particles rich in chromium. In the case of the Cu-Cr-Al2O3 composite it is a consequence of precipitation of particles rich in chromium and the presence of Al2O3 dispersoid nanopartidies.
Keywords:
Metals and alloys / Nanostructured materials / Powder metallurgy / Mechanical alloying / MicrostructureSource:
International Journal of Materials Research, 2014, 105, 2, 194-199Funding / projects:
- The effect of nano- and microconstituents on the synthesis and characteristics of novel composite materials with metal matrix (RS-MESTD-Basic Research (BR or ON)-172005)
DOI: 10.3139/146.111000
ISSN: 1862-5282; 2195-8556
WoS: 000331489600011
Scopus: 2-s2.0-84894318180
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Institution/Community
VinčaTY - JOUR AU - Božić, Dušan AU - Ružić, Jovana AU - Stašić, Jelena AU - Rajković, Višeslava M. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5886 AB - The hardening of copper alloy by using powder metallurgy techniques and analysis of its effects on the strength of obtained material are discussed. Prealloyed Cu-0.5 wt.% Cr powder and mechanically alloyed Cu-0.5 wt.% Cr-3 wt.% Al2O3 powder were consolidated by means of hot pressing. Optical microscopy, scanning electron microscopy and transmission electron microscopy were used for microstructure characterization of compacts. Hardness and electrical conductivity of both compacts were compared. High strengthening of the Cu-Cr compacts is achieved by aging as a consequence of the influence of precipitation particles rich in chromium. In the case of the Cu-Cr-Al2O3 composite it is a consequence of precipitation of particles rich in chromium and the presence of Al2O3 dispersoid nanopartidies. T2 - International Journal of Materials Research T1 - Synthesis and characteristics of precipitation hardened Cu-Cr alloy and multiply hardened Cu-Cr-Al2O3 nanocomposite obtained using powder metallurgy techniques VL - 105 IS - 2 SP - 194 EP - 199 DO - 10.3139/146.111000 ER -
@article{ author = "Božić, Dušan and Ružić, Jovana and Stašić, Jelena and Rajković, Višeslava M.", year = "2014", abstract = "The hardening of copper alloy by using powder metallurgy techniques and analysis of its effects on the strength of obtained material are discussed. Prealloyed Cu-0.5 wt.% Cr powder and mechanically alloyed Cu-0.5 wt.% Cr-3 wt.% Al2O3 powder were consolidated by means of hot pressing. Optical microscopy, scanning electron microscopy and transmission electron microscopy were used for microstructure characterization of compacts. Hardness and electrical conductivity of both compacts were compared. High strengthening of the Cu-Cr compacts is achieved by aging as a consequence of the influence of precipitation particles rich in chromium. In the case of the Cu-Cr-Al2O3 composite it is a consequence of precipitation of particles rich in chromium and the presence of Al2O3 dispersoid nanopartidies.", journal = "International Journal of Materials Research", title = "Synthesis and characteristics of precipitation hardened Cu-Cr alloy and multiply hardened Cu-Cr-Al2O3 nanocomposite obtained using powder metallurgy techniques", volume = "105", number = "2", pages = "194-199", doi = "10.3139/146.111000" }
Božić, D., Ružić, J., Stašić, J.,& Rajković, V. M.. (2014). Synthesis and characteristics of precipitation hardened Cu-Cr alloy and multiply hardened Cu-Cr-Al2O3 nanocomposite obtained using powder metallurgy techniques. in International Journal of Materials Research, 105(2), 194-199. https://doi.org/10.3139/146.111000
Božić D, Ružić J, Stašić J, Rajković VM. Synthesis and characteristics of precipitation hardened Cu-Cr alloy and multiply hardened Cu-Cr-Al2O3 nanocomposite obtained using powder metallurgy techniques. in International Journal of Materials Research. 2014;105(2):194-199. doi:10.3139/146.111000 .
Božić, Dušan, Ružić, Jovana, Stašić, Jelena, Rajković, Višeslava M., "Synthesis and characteristics of precipitation hardened Cu-Cr alloy and multiply hardened Cu-Cr-Al2O3 nanocomposite obtained using powder metallurgy techniques" in International Journal of Materials Research, 105, no. 2 (2014):194-199, https://doi.org/10.3139/146.111000 . .