| 积屑瘤的稳定性与显微裂纹 |
| |
| 引用本文： | 陈子文,杨卫东.积屑瘤的稳定性与显微裂纹[J].华侨大学学报(自然科学版),1991,12(2):190-194,T001. |
| |
| 作者姓名： | 陈子文 杨卫东 |
| |
| 作者单位： | 华侨大学精密机械工程系，华侨大学精密机械工程系 |
| |
| 摘 要： | 利用光学和电子显微镜对20钢在两种切削参数下,形成的积屑瘤的金相显微组织与结构进行了观察.结果表明:积屑瘤具有纤维状结构,积屑瘤中各部位的形变率不同;某些部位有碳的偏聚现象.其组织类似于珠光体结构;对积屑瘤的受力状态及其各部位的形变率的差异进行了讨论。大量裂纹的存在.削弱了积屑瘤的强度.是引起积屑瘤不稳定性的因素之一.
|
| 关 键 词： | 积屑瘤 稳定性 显微组织 裂纹 |
The Stability of Built-up Edge(BUE)and Its Microcracks |
| |
| Chen Ziwen Yang Weidong.The Stability of Built-up Edge(BUE)and Its Microcracks[J].Journal of Huaqiao University(Natural Science),1991,12(2):190-194,T001. |
| |
| Authors: | Chen Ziwen Yang Weidong |
| |
| Institution: | Department of Precision Mechanical Engineering |
| |
| Abstract: | By means of optical and electron microscopy,an examination is carried out on the metallurgical microstructure of a built up edge(BUE)which is formed in the 0.2% C steel with two kinds of cutting parameters.The BUE so formed is of a fibrous structure,with quite different deformation rate in its different parts.Some parts of the BUE have a biassing aggregation of carbon and show a structure similar to that of pearlite.The discussion centres on the relation between the stress distribution of different parts of BUE and its defor- mation difference.Lots of microcracks are bound to weaken the strength of the BUE and so become one of the factors of its unstability. |
| |
| Keywords: | built-up edges stability micro-structure cracks |
| 本文献已被 CNKI 维普 等数据库收录！ |
