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01-06-2013

Microstructure and properties of Cu–2.8Ni–0.6Si alloy

Authors: Xiang-Peng Xiao, Bai-Qing Xiong, Guo-Jie Huang, Lei Cheng, Li-Jun Peng, Qi-Ming Liang

Published in: Rare Metals | Issue 3/2013

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Abstract

The phase transformation behavior and heat treatment response of Cu–2.8Ni–0.6Si (wt%) alloy subjected to different heat treatments were studied by X-ray diffraction, transmission electron microscopy observation, and measurement of hardness and electrical conductivity. The variation of hardness and electrical conductivity of the alloy was measured as a function of aging time. On aging at the temperature below T _R (500–550 °C) in Cu–2.8Ni–0.6Si alloy, the transformation undergoes spinodal decomposition, DO₂₂ ordering, and δ-Ni₂Si phase. On aging at the temperature above T _R (500–550 °C), the transformation products were precipitations of δ-Ni₂Si. The free energy versus composition curves were employed to explain the microstructure observations.

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Title: Microstructure and properties of Cu–2.8Ni–0.6Si alloy
Authors: Xiang-Peng Xiao
Bai-Qing Xiong
Guo-Jie Huang
Lei Cheng
Li-Jun Peng
Qi-Ming Liang
Publication date: 01-06-2013
Publisher: Nonferrous Metals Society of China
Published in: Rare Metals / Issue 3/2013
Print ISSN: 1001-0521
Electronic ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-013-0056-7

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