Copper alloys with improved properties: standard ingot metallurgy vs. powder metallurgy

Authors

  • Milan T. Jovanović
  • Višeslava Rajković
  • Ivana Cvijović-Alagić

Keywords:

Mechanical alloying, Internal oxidation, Al2O3 particles, Chromium-rich particles, Thermal stability.

Abstract

Three copper-based alloys: two composites reinforced with Al2O3 particles and processed through powder metallurgy (P/M) route, i.e. by internal oxidation (Cu-2.5Al composite) and by mechanical alloying (Cu-4.7Al2O3 ) and Cu-0.4Cr-0.08Zr alloy produced by ingot metallurgy (vacuum melting and casting) were the object of this investigation. Light microscope and scanning electron microscope (SEM) equipped with electron X-ray spectrometer (EDS) were used for microstructural characterization. Microhardness and electrical conductivity were also measured. Compared to composite materials, Cu-0.4Cr-0.08Zr alloy possesses highest electrical conductivity in the range from 20 to 800 ℃, whereas the lowest conductivity shows composite Cu-2.5Al processed by internal oxidation. In spite to somewhat lower electrical conductivity (probably due to inadequate density), Cu-2.5Al composite exhibits thermal stability enabling its application at much higher temperatures than materials processed by mechanical alloying or by vacuum melting and casting.

 

http://dx.doi.org/10.5937/metmateng1403207J

References

A. Atrens, J. Nairn, H. Fernee, G. Skennerton, A. Olofinjana, Materials Forum, 21 (1997) 57.

A. Chrysanthou, G. Erbaccio, J. Mat. Sci., 30 (1995) 6339–6344.

Y.Z. Zhan, G.D. Zhang, Key Eng. Mat., 249 (2003) 227–232.

K. Ichikawa, M. Achikita, Mat. Trans. JIM, 34 (1993) 718–724.

http://www.863.org.cn/english/Forum/17.doc ,C. Jianyi, W. Mingpu, L.Z.W. Yanhui, China-EU Forum on Nanosized Technology, Beijing, P.R. China, Dec.2002.

R.H Palma, A.O. Sepulveda, Mat. Sci. Forum, 416-418 (2003) 162.

B. Tiang, P. Liu, K. Song, Y. Li, F. Ren, Mat. Sci. Eng., A 435-436 (2006) 705.

Rajković, D. Božić, A. DeveÄerski, J. Serb. Chem.Soc., 72 (2007) 45–53.

P.K. Jena, E.A. Brocchi, I.G. Solorzano, M.S. Motta, Mat. Sci. Eng., A 371 (2004) 72–78.

J.-H. Ahn, I.-H. Song, Y.-D. Hahn, Mat. Trans.JIM, 37 (1996) 733–737.

A. Mukhtar, D.L. Zhang, C. Kong, P. Munroe, IOP Conference Series, Mat. Sci. Eng., 4 (2009) 012005.

E. Kneller, Y. Khan, U. Gorres, Z. Metallkde, 77 (1986) 43.

SRPS Standard, SRPS C.H.3, 074.

Z. Szaraz, Z. Trojanova, M. Cabbibo, E. Evangelista, Mat. Sci. Eng.. A 462 (2007) 225–229.

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Published

2014-09-30

How to Cite

Jovanović, Milan T., Višeslava Rajković, and Ivana Cvijović-Alagić. 2014. “Copper Alloys With Improved Properties: Standard Ingot Metallurgy Vs. Powder Metallurgy”. Metallurgical and Materials Engineering 20 (3):207-16. https://metall-mater-eng.com/index.php/home/article/view/157.

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