Effect of Rare Earth Yttrium on Microstructure and Properties of Oxygen-free Copper Ingot
The effects of rare earth Y on the microstructure,mechanical properties and conductivity of oxy-gen-free copper ingots were studied using the direct reading spectrometer,oxygen nitrogen hydrogen analy-ser,microhardness tester and eddy current conductivity tester,etc.The results show that of adding rare earth Y can significantly reduce the content of impurity elements such as O,S,P and Zn in oxygen-free copper billets.With the increase of rare earth Y content,the grain size of the experimental ingot first increases and then decreases,and becomes more uniform,the Vickers hardness of the test ingot first decreases and then gradually increases,the conductivity first increases and then gradually decreases.
万方数据
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