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Variations of microhardness with solidification parameters and electrical resistivity with temperature for Al-Cu-Ag eutectic alloy

Access

info:eu-repo/semantics/closedAccess

Date

2012

Author

Boyuk, U.
Marasli, N.
Cadirli, E.
Kaya, H.
Keslioglu, K.

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Abstract

Al-Cu-Ag eutectic alloy was directionally solidified upwards with different growth rates (1.83-498.25 mu m/s) at a constant temperature gradient (8.79 K/mm) and with different temperature gradients (3.99-8.79 K/mm) at a constant growth rate (8.30 mu m/s) by using a Bridgman type directional solidification apparatus. The dependence of microhardness (HV) on the growth rate (V), temperature gradient (G) and microstructure parameter (lambda) were found to be HV = k(1) V(0.10), HV = k(2) G(0.13) and HV = k(3) lambda(-0.22), respectively. The electrical resistivity of the Al-Cu-Ag eutectic cast alloy increases linearly with the temperature in the range of 300-780 K. The enthalpy of fusion and specific heat change during melting for same alloy were also determined to be 223.8 J/g, and 0.433 J/g K, respectively by a differential scanning calorimeter from heating curve during the transformation from eutectic solid to eutectic liquid. (C) 2011 Elsevier B. V. All rights reserved.

Source

CURRENT APPLIED PHYSICS

Volume

12

Issue

1

URI

https://dx.doi.org/10.1016/j.cap.2011.04.018
https://hdl.handle.net/11480/4655

Collections

  • Makale Koleksiyonu [2055]
  • Öksüz Yayınlar Koleksiyonu - Scopus [2338]
  • Öksüz Yayınlar Koleksiyonu - WoS [2361]



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