Investigation of thermal expansion measurement of brass strip H62 after high current density electropulsing by the CCD technique

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• 作者：He ; Guanhu ; Wang ; Baoquan ; Guo ; Xiaonan ; Yang ; Fei ; Guo ; Jingdong ; Zhou ; Benlian
• 关键词：Thermal expansion ; Brass strip ; High current density electropulsing ; CCD technique
• 刊名：Materials Science and Engineering: A
• 出版年：2000
• 出版时间：November 15, 2000
• 年：2000
• 卷：292
• 期：2
• 页码：183-188
• 全文大小：349 K

文摘

The elongation δ of a brass strip (H62) was greatly improved after high current density electropulsing treatment. The thermal expansion (ΔL/L₀) of the brass strip samples with different treatment conditions has been measured by the CCD (charge coupled device) technique in the temperature range from 20 to 250°C. The results show that δ and ΔL/L₀ reveal almost similar variation for different treatment conditions. By the observation of transmission electron microscopy of the brass strip and the in-situ detection of current waveform during electropulsing, the probable mechanism of property variations of the brass strip has been discussed.