| 电渣熔铸钢结硬质合金经激光熔化处理后的组织和性能 |
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| 引用本文： | 马建国,尤显卿,黄曼平,张成军,解育娟.电渣熔铸钢结硬质合金经激光熔化处理后的组织和性能[J].铸造技术,2007,28(3):330-333. |
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| 作者姓名： | 马建国 尤显卿 黄曼平 张成军 解育娟 |
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| 作者单位： | 1. 安徽建筑工业学院,安徽,合肥,230022
2. 合肥工业大学材料科学与工程学院,安徽,合肥,230009 |
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| 摘 要： | 借助光学显微镜、扫描电镜及XRD衍射仪对重熔层的显微组织结构和相结构进行分析，用显微硬度计和MM-200型磨损试验机对激光处理表面的硬度和耐磨性进行了测试。试验结果表明，电渣熔铸钢结硬质合金表面经过激光重熔处理后的组织比未经激光处理的明显细化，大颗粒WC部分溶解，小颗粒碳化物完全溶解；随着激光功率的加大，重熔层的熔深增大，枝晶尺寸随之增大，表面硬度和耐磨性也相应提高。
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| 关 键 词： | 激光 电渣熔铸 钢结硬质合金 显微组织 性能 |
| 文章编号： | 1000-8365(2007)03-0330-04 |
| 修稿时间： | 09 17 2006 12:00AM |
Microstructure and Properties of Steel-bonded Carbide by Electro-slag Melting and Casting after Laser Melted Treatment |
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| MA Jian-guo,YOU Xian-qing,HUANG Man-ping,ZHANG Cheng-jun,XIE Yu-juan.Microstructure and Properties of Steel-bonded Carbide by Electro-slag Melting and Casting after Laser Melted Treatment[J].Foundry Technology,2007,28(3):330-333. |
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| Authors: | MA Jian-guo YOU Xian-qing HUANG Man-ping ZHANG Cheng-jun XIE Yu-juan |
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| Affiliation: | 1. Anhui Institute of Architecture and Industry, Hefei 230022, China; 2. Institute of Material Science and Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | The surface of steel-bonded carbide DGJW40 prepared by electro-slag melting and casting was treated by CO2 laser with the same scanning speed(800 mm/min) and four kinds of laser powers(four kinds of laser powers),and the microstructure and properties of this alloy surface layer were studied by OM,SEM, XRD,micro-hardness tester and MM-200 wear tester.The results show that the microstructure after laser remelting is much finer than that without laser treatment,and some big WCp are partly dissolved and some small WCp are completely dissolved.The depth of remelted pool and the size of dendrites are increased with increase of the laser powers,thus results in the increase of surface hardness and wear resistance. |
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| Keywords: | Laser Electro-slag and casting Steel-bonded carbide Microstructure Property |
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