原位合成TiC和M<sub>7</sub>C<sub>3</sub>陶瓷硬质相的生长习性

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

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;
2. 辽宁聚龙金融设备有限公司, 鞍山 114041

基金项目: 辽宁省教育厅重点实验室资助项目(2008S164);沈阳市科技攻关资助项目(20082647-2)

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- 收稿日期: 2012-02-14

Growth habit of TiC and M_7C_3 ceramic hard phase in situ synthesized

School of Material Sciences and Engineering, Advaced Weld Technology and Automatic Key Laboratory of Liaoning Province, Shenyang 110870, China

摘要

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.
- 原位合成 /
- 陶瓷硬质相 /
- 生长机制 /
- 堆焊层
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.
- in situ synthesis /
- ceramic hard phase /
- growth mechanism /
- surfacing layer

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文章访问数: 209
HTML全文浏览量: 6
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原位合成TiC和M7C3陶瓷硬质相的生长习性

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Growth habit of TiC and M_7C_3 ceramic hard phase in situ synthesized

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出版历程

目录

原位合成TiC和M₇C₃陶瓷硬质相的生长习性