| 高镍铬铸铁轧辊材料激光相变组织与耐磨性研究 |
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| 引用本文： | 欧阳安,黄安国,王长贵,王玉涛,李志远.高镍铬铸铁轧辊材料激光相变组织与耐磨性研究[J].电焊机,2007,37(8):45-49. |
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| 作者姓名： | 欧阳安 黄安国 王长贵 王玉涛 李志远 |
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| 作者单位： | 1. 华中科技大学,材料学院,湖北,武汉,430074
2. 武汉钢铁集团公司研究院,湖北,武汉,430080 |
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| 摘 要： | 对高镍铬铸铁轧辊材料进行激光相变强化试验,观察了其微观显微组织,并进行了硬度测试和耐磨性分析.研究发现,激光相变试样存在熔化区、淬硬区和母材三个区域.激光相变处理后硬度由基材的500HV提高到800～900 HV.激光强化处理后高镍铬铸铁轧辊的耐磨性也远高于母材.还分析了激光相变出现熔化区及产生裂纹的机制,并进行了温度场模拟,以探索优化的工艺参数.
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| 关 键 词： | 激光技术 高镍铬铸铁轧辊 激光淬火 显微组织 耐磨性 |
| 文章编号： | 1001-2303（2007）08-0045-05 |
| 修稿时间： | 2007-06-15 |
Study on laser phase transformation hardening of high-Ni-Cr cast iron |
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| OUYANG An,HUANG An-guo,WANG Chang-gui,WANG Yu-tao,LI Zhi-yuan.Study on laser phase transformation hardening of high-Ni-Cr cast iron[J].Electric Welding Machine,2007,37(8):45-49. |
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| Authors: | OUYANG An HUANG An-guo WANG Chang-gui WANG Yu-tao LI Zhi-yuan |
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| Affiliation: | 1.Material Science and engineering, HUST,Wuhan 430074, China; 2.Wuhan Iron and Steel Group Company Institute, Wuhan 430080, China |
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| Abstract: | The laser phase transformation-hardened experiment on specimen of high-Ni-Cr cast iron has been performed,and the microstructure,the microhardness and the abrasion characteristic are analyzed.The results show that its section is divided into melt zone,quenched zone and the base metal.The microhardness of hardening zone is improved from 550 HV to 800N900 HV,most to 900 HV. The hardness of the specimen with the experiment is much higher than that of base metal.The crack in the specimen is analyzed and the best technical parameter are explored by temperature field simulation. |
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| Keywords: | laser technics high-Ni-Cr cast iron laser quenching microstructure abrasion characteristic |
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