| 致密WC增强铁基表面复合材料的原位制备与形成机理 |
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| 引用本文： | 程仕李,钟黎声,毕晓静. 致密WC增强铁基表面复合材料的原位制备与形成机理[J]. 焊接学报, 2016, 37(3): 1-4 |
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| 作者姓名： | 程仕李 钟黎声 毕晓静 |
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| 作者单位： | 1.西安建筑科技大学机电工程学院, 西安 710055 |
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| 基金项目： | 国家科技计划资助项目对俄科技合作专项(2014-DFR50630)，国家高技术研究发展计划(863计划)项目(2013-AA031803)，国家自然科学基金资助项目(51374169)，陕西省科学技术研究发展计划项目工业攻关计划(2014K08-13) |
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| 摘 要： | 利用铸渗复合-热处理工艺制备致密碳化钨增强铁基表面复合材料,研究了不同保温时间下复合材料的物相组成与微观组织.结果表明,不同保温时间下,复合材料表面均有致密碳化钨层生成,反应层厚度最大为148 μm.致密碳化钨层的显微硬度随保温时间无明显变化,均明显高于铁基体.铁基表面致密碳化钨的形成主要依赖于Fe-C-W体系中碳和钨原子的扩散与原位反应.
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| 关 键 词： | 致密碳化钨 保温时间 显微硬度 形成机理 |
| 收稿时间： | 2014-05-27 |
In-situ preparation and formation mechanism of dense WC reinforced iron-based composite layer |
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| CHENG Shili,ZHONG Lisheng and BI Xiaojing. In-situ preparation and formation mechanism of dense WC reinforced iron-based composite layer[J]. Transactions of The China Welding Institution, 2016, 37(3): 1-4 |
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| Authors: | CHENG Shili ZHONG Lisheng BI Xiaojing |
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| Affiliation: | 1.College of Electrical and Mechanical Engineering, Xi'an University of Architecture & Technology, Xi'an 710055, China2.School of Materials Science & Engineering, Northweatern Polytechnical University, Xi'an 710068, China3.The No. 2 Gas Production Plant, PetroChina Changqing Oilfield Company, Yulin 719000, China |
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| Abstract: | Densetungsten carbide reinforced iron-based surface layer were prepared via casting-infiltration and heat treatment process. The microstructure of samples obtained by different heating time was researched.The results showed that dense tungsten carbide layer was generated on the surface.The thickness of the layer was increased with the heating time; the maximum thickness reached 148 μm. The micro-hardness of the layer was significantly higher thanthe iron matrix and it didn't change a lot with the varying heating time.The formation of dense tungsten carbide layer depended on the diffusion and the interaction in-situ of C and W atoms in the Fe-C-W system. |
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