2013•稀有金属：英文版Requires access
Microstructure and properties of Cu-2.8Ni-0.6Si alloy
Xiang-peng, Xiao, Baiqing, Xiong, Guojie, Huang, Lei Lei, Cheng, Lijun, Peng ......................................................, Qiming, Liang Liang
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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 TR (500-550°C) in Cu-2.8Ni-0.6Si alloy, the transformation undergoes spinodal decomposition, DO22 ordering, and d-Ni2Si phase. On aging at the temperature above TR (500-550 °C), the transformation products were precipitations of d-Ni2Si. The free energy versus composition curves were employed to explain the microstructure observations.