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| 功能梯度金属陶瓷刀具切削铸铁的磨损失效研究 | |
| 引用本文： | 石增敏,郑勇,刘文俊,胡宗智,陈莲华. 功能梯度金属陶瓷刀具切削铸铁的磨损失效研究[J]. 三峡大学学报(自然科学版), 2006, 25(6): 524-527 |
| 作者姓名： | 石增敏 郑勇 刘文俊 胡宗智 陈莲华 |
| 作者单位： | 1. 三峡大学,机械与材料学院,湖北,宜昌,443002 2. 南京航空航天大学,材料与科学技术学院,南京,210016 3. 三峡大学,机械与材料学院,湖北,宜昌,443002;华中科技大学,模具技术国家重点实验室,武汉,430074 |
| 基金项目： | 国家自然科学基金;国家重点实验室基金;三峡大学校科研和教改项目 |
| 摘 要： | 利用真空烧结工艺和表面氮化处理工艺,制备了纳米复合Ti(C,N)基金属陶瓷可转位刀片和Ti(C,N)基金属陶瓷功能梯度可转位刀片,与通用硬质合金刀具进行了铸铁的对比切削试验.并利用SEM、EPMA对自制刀片的磨损失效机理进行了分析.结果表明:氮化处理后刀片的耐磨性提高,与TN20的切削性能相似.功能梯度金属陶瓷刀片的磨损失效机理为冲击磨损、扩散和粘附磨损. |
| 关 键 词： | Ti(C N)基金属陶瓷 可转位刀片 功能梯度 磨损机理 |
| 文章编号： | 1672-948X(2006)06-0524-04 |
| 修稿时间： | 2006-11-07 |
Wear Mechanism of Functional Gradient Cermet Tools for Cutting Cast Iron |
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| Shi Zengmin,Zheng Yong,Liu Wenjun,Hu Zongzhi,Chen Lianhua. Wear Mechanism of Functional Gradient Cermet Tools for Cutting Cast Iron[J]. Journal of China Three Gorges University(Natural Sciences), 2006, 25(6): 524-527 | |
| Authors: | Shi Zengmin Zheng Yong Liu Wenjun Hu Zongzhi Chen Lianhua |
| Abstract: | Nano-composite Ti(C,N)-based cermet indexable inserts and functional gradient Ti(C,N)-based cermet indexable inserts were produced separately by vacuum sintering and surface heat-treatment with hot isostatic pressing(HIP) in nitrogen.The newly fabricated cermet cutting tools were tested in continuous turning cast iron compared to conventional cutting tools.It is found that the surface hardness of the cermets is increased after being subjected to a heat-treatment in nitrogen,which substantially improved the flank wear resistance during cutting;and a higher cutting performance as TN20 inserts.For functional gradient Ti(C,N)-based cermet tools,impact wear,diffusion and adhesion wear are the main source of tools failure. |
| Keywords: | nano-composite Ti(C N)-based cermet indexable insert functional gradient wear mechanism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |