葛言柳,邓德伟,鲁俊,田鑫,关锰.两种Ni-Cr-B-Si系合金等离子堆焊层组织结构和显微硬度的研究[J].表面技术,2012,(2):5-8,19.
GE Yan-liu,DENG De-wei,LU Jun,TIAN Xin,GUAN Meng.Study on Microstructure and Microhardness in PTA Weld Hardfacings of Two Types of Ni-Cr-B-Si Alloys[J].Surface Technology,2012,(2):5-8,19 |
| 两种Ni-Cr-B-Si系合金等离子堆焊层组织结构和显微硬度的研究 |
| Study on Microstructure and Microhardness in PTA Weld Hardfacings of Two Types of Ni-Cr-B-Si Alloys |
| 投稿时间：2011-11-01 修订日期：2012-02-20 |
| DOI： |
| 中文关键词: 等离子堆焊 Ni-Cr-B-Si 显微组织 硬度 |
| 英文关键词:PTAW Ni-Cr-B-Si microstructure hardness |
| 基金项目:国家自然科学基金(11072045);国家973课题(2011CB013402) |
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| Author | Institution |
| GE Yan-liu | School of Material Science and Engineering , Dalian University of Technology , Dalian 116024 , China |
| DENG De-wei | School of Material Science and Engineering , Dalian University of Technology , Dalian 116024 , China |
| LU Jun | School of Material Science and Engineering , Dalian University of Technology , Dalian 116024 , China |
| TIAN Xin | ShenyangBlowerGroup,Shenyang110869,China |
| GUAN Meng | ShenyangBlowerGroup,Shenyang110869,China |
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| 中文摘要: |
| 采用等离子堆焊技术在304L不锈钢表面堆焊Ni-Cr-B-Si合金粉末熔覆层。应用扫描电子显微镜、电子探针、X-射线衍射仪、显微硬度计等测试手段,研究两种Ni-Cr-B-Si系合金成分等离子堆焊层组织结构和显微硬度。结果表明:堆焊合金层组织由毭-Ni树枝晶和树枝晶间多元共晶组成;Cr,C,B和Si元素含量增加,树枝状组织含量大幅减少,碳化物和硼化物含量显著增加。硬度测试结果表明:硼化物和碳化物含量增大使得堆焊层硬度显著提高。 |
| 英文摘要: |
| The Ni-Cr-B-Si alloy powder was deposited on the surface of 304L stainless steel by plasma transferred arc welding(PTAW). To determine the microstructure and properties of hardfacings with two types of alloys, scanning electron microscope, X-ray diffraction, electron microprobe and hardness tester were employed. The results show that the coatings consist of γ-Ni dendrites and eutectic mixture as interdendritic constituents. It is found that the content fraction of the dendritic phases drastically decreases and the proportion of chromium borides and carbides increases with an increase of Cr, C, B and Sicontent. Microhardness testing reveals that an increase in content of chromium borides and carbides leads to a significant increase of hardness. |
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