Effect of Lanthanum and Yttrium on Microstructures of Cu-Cr alloys

材料热处理学报, 2004, 25(5): 56-60.

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1.School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi, 330047, China

2.School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi, 330047, China

3.School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi, 330047, China

4.School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi, 330047, China

5.School of Materials Science and Engineering, Nanchang University, Nanchang, Jiangxi, 330047, China

基金项目: 教育部高校骨干教师资助计划(GG-430-11902-1010) 江西省自然科学基金(0050022)

Effect of Lanthanum and Yttrium on Microstructures of Cu-Cr alloys

Keywords： Cu-Cr alloys

Microstructures of Cu-based alloys (including Cu0.8Cr0.05La, Cu0.8Cr0.1La, Cu0.8Cr0.4La, Cu0.8Cr0.05Y,Cu0.8Cr0.1Y 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 the grains with sphere shape and on the grain-boundaries with slice shape.

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Effect of Lanthanum and Yttrium on Microstructures of Cu-Cr alloys

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