| Co-Cr-W系粉末等离子弧堆焊显微结构研究 |
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| 引用本文： | 侯清宇,高甲生.Co-Cr-W系粉末等离子弧堆焊显微结构研究[J].焊接技术,2003,32(5):9-11. |
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| 作者姓名： | 侯清宇 高甲生 |
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| 作者单位： | 安徽工业大学,冶金与材料学院,安徽,马鞍山,243002 |
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| 基金项目： | 安徽省科技厅中韩合作项目(00250807)，中美国际合作项目(01088013) |
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| 摘 要： | 对Co—Cr—W系多元合金粉末等离子孤堆焊层的金相组织、X射线衍射、扫描电镜(SEM)和透射电镜(TEM)的研究结果表明，合金层基体为具有(200)晶面择优取向的Co基固溶体，Co基固溶体中存在许多堆积层错；与固溶体组成共晶体的硼碳化物主要为具有六方点阵并含有层片状孪晶的(Cr，Fe)3(C，B)3。
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| 关 键 词： | 粉末等离子弧堆焊 Co基合金 择优取向 显微组织 |
| 文章编号： | 1002-025X(2003)05-0009-03 |
Research of microstructure of plasma arc surfacing with Co-Cr-W alloy powder |
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| HOU Qing-yu,GAO Jia-sheng.Research of microstructure of plasma arc surfacing with Co-Cr-W alloy powder[J].Welding Technology,2003,32(5):9-11. |
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| Authors: | HOU Qing-yu GAO Jia-sheng |
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| Abstract: | The microstructure of Co-Cr-W powder plasma arc surfacing alloy layer has been investigated using metallurgical phase, X ray diffraction, SEM and TEM. The results indicated that the alloy layer was composed of cobalt-base solid solution with the preferred direction at (200)crystal plane ,and there was a lot of stacking fault ribbons lying in cobalt-base solid solution. The result also showed that the eutectic boride and carbide of (Cr,Fe)7(C,B)3 was hexagonal lattice with lamellar and flake twin. |
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| Keywords: | plasma arc surfacing cobalt-base alloy preferred direction microstructure |
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