Effect of lanthanum and yttrium on microstructures of Cu-Cr alloys

被引：0
|
作者：
Chen, Xiaofang [1 ]
Zhang, Meng [1 ]
Yin, Jianying [1 ]
Shuai, Gewang [1 ]
Liu, Guoming [1 ]
机构：
[1] Sch. of Mat. Sci. and Eng., Nanchang Univ., Nanchang 330047, China
来源：
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | 2004年 / 25卷 / 05期
关键词：
Lanthanum - Metallographic microstructure - Optical microscopy - Scanning electron microscopy - X ray diffraction analysis - Yttrium;
D O I：
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中图分类号：
学科分类号：
摘要：
Microstructures of Cu-based alloys (including Cu0.8Cr0.05La, Cu0.8Cr0.1La, Cu0.8Cr0.4La, Cu0.8Cr0.05Y, Cu0.8Cr0.lY and Cu0.8Cr0.4Y) were studied by optical microscope, X-ray diffractometer, Scanning electron microscope and Energy-dispersive X-ray spectroscopy. The results show that La and Y refine the grains and change the distribution of microstructures of Cu-Cr alloys. The sizes of Cr particles are smaller in CuCrRE alloys than in CuCr alloy. In CuCrLa and CuCrY alloys, La and Y usually respectively exist as compounds of Cu6La and Cu5Y. These compounds distribute in (he grains with sphere shape and on the grain-boundaries with slice shape.
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页码：56 / 60
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