| 原位合成TiC和M7C3陶瓷硬质相的生长习性 |
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| 引用本文： | 苏允海,秦昊,吴德广,刘政军.原位合成TiC和M7C3陶瓷硬质相的生长习性[J].焊接学报,2012,33(11):59-62. |
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| 作者姓名： | 苏允海 秦昊 吴德广 刘政军 |
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| 作者单位： | 1. 沈阳工业大学辽宁省先进焊接技术及自动化重点实验室,沈阳110870 辽宁聚龙金融设备有限公司,鞍山114041
2. 沈阳工业大学辽宁省先进焊接技术及自动化重点实验室,沈阳,110870 |
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| 基金项目： | 辽宁省教育厅重点实验室资助项目，沈阳市科技攻关资助项目 |
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| 摘 要： | 采用等离子弧堆焊设备在低碳钢表面堆焊一层Fe—Cr-Ti—C系陶瓷复合堆焊合金，原位合成TiC和M7C3陶瓷硬质相，分析熔池中TiC和M7C3陶瓷硬质相的形成机制．利用X射线衍射仪（XRD）、扫描电镜（SEM）、能谱分析仪（EDS）等设备进行检测分析．结果表明，堆焊层中原位合成了“十字开花状”、“短杆状”、“颗粒状”的TiC陶瓷硬质相和不规则“六角杆状”的M7C3陶瓷硬质相；部分TiC和M7C3陶瓷硬质相紧密结合，提高了TiC陶瓷硬质相与基体组织的结合强度；M7C3可以附着在TiC颗粒上生长，TiC硬质相的形成提高了M7C3的形核率．
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| 关 键 词： | 原位合成 陶瓷硬质相 生长机制 堆焊层 |
| 收稿时间： | 2012/2/15 0:00:00 |
Growth habit of TiC and M_7C_3 ceramic hard phase in situ synthesized |
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| SU Yunhai,QIN Hao,WU Deguang and LIU Zhengjun.Growth habit of TiC and M_7C_3 ceramic hard phase in situ synthesized[J].Transactions of The China Welding Institution,2012,33(11):59-62. |
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| Authors: | SU Yunhai QIN Hao WU Deguang and LIU Zhengjun |
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| Affiliation: | School of Material Sciences and Engineering, Advaced Weld Technology and Automatic Key Laboratory of Liaoning Province, Shenyang 110870, China,School of Material Sciences and Engineering, Advaced Weld Technology and Automatic Key Laboratory of Liaoning Province, Shenyang 110870, China,School of Material Sciences and Engineering, Advaced Weld Technology and Automatic Key Laboratory of Liaoning Province, Shenyang 110870, China and School of Material Sciences and Engineering, Advaced Weld Technology and Automatic Key Laboratory of Liaoning Province, Shenyang 110870, China |
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| Abstract: | Plasma welding technology was used to melt the Fe-Cr-Ti-C system wear-resistant alloy on the low-carbon steel, TiC and M7C3 were in situ synthesized in the surfacing layer, and the formation mechanism of TiC and M7C3 ceramic hard phase in the weld pool was studied.X-ray diffraction(XRD), scanning electron microscope(SEM), spectrum analyzer(EDS) were used to test the microstructure of the surfacing layer.The result shows that a large number of cross flower-shaped, short rod-shaped, granular TiC ceramic hard phase and hexagonal rod-shaped M7C3 ceramic hard phase are formed in the surfacing layer.Part of the TiC and M7C3 ceramic hard phase work closely together and the bonding strength between the ceramic hard phase of TiC and matrix structure is improved.The M7C3 grains could form next to the TiC ceramic hard phase, and formation of TiC hard phase improves the nucleation rate of M7C3 hard phase. |
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| Keywords: | in situ synthesis ceramic hard phase growth mechanism surfacing layer |
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