Title of article
Microcalorimetric study of the annealing hardening mechanism of a Cu–2.8Ni–1.4Si (at%) alloy
Author/Authors
Donoso، نويسنده , , E. and Espinoza، نويسنده , , R. and Diلnez، نويسنده , , M.J. and Criado، نويسنده , , J.M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2012
Pages
5
From page
612
To page
616
Abstract
The precipitation processes in a Cu–2.8 at% Ni–1.4 at% Si alloy were studied using differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and microhardeness measurements. The analysis of the calorimetric curves from room temperature to 900 K shows the presence of one exothermic reaction attributed to the formation of δ-Ni2Si particles in the copper matrix that was confirmed by Transmission Electron Microscopy (TEM) and EDS microanalysis. The activation energies calculated for the precipitation of δ-Ni2Si was lower than the ones corresponding to diffusion of nickel and silicon in copper. A correlation between of microhardness of the alloy and the formation of δ-Ni2Si particles has been found.
Keywords
Copper alloys , DSC , Kinetics , Precipitation , Cu–Ni–Si alloys
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2012
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2171393
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