|
|||||
|
|
| 具有纳米结构表层的纯铁和38CrMoAl钢的渗氮 | |
| 引用本文： | 佟伟平,陶乃镕,王镇波,吕坚,卢柯. 具有纳米结构表层的纯铁和38CrMoAl钢的渗氮[J]. 中国科学院研究生院学报, 2005, 22(2): 230-238 |
| 作者姓名： | 佟伟平 陶乃镕 王镇波 吕坚 卢柯 |
| 作者单位： | 1. 中国科学院金属研究所,沈阳材料科学国家(联合)实验室,沈阳,110016;东北大学材料电磁过程研究教育部重点实实验室,沈阳,1100004 2. 中国科学院金属研究所,沈阳材料科学国家(联合)实验室,沈阳,110016 3. 法国特鲁瓦工业大学,特鲁瓦 |
| 基金项目： | supportedbyNNSFofChina (5 0 0 2 110 1)，MinistryofScienceandTechnologyofChina (G19990 64 5 0 5 ) |
| 摘 要： | 通过表面机械研磨技术(SMAT),在纯铁和38CrMoAl钢样品表面产生大量的塑性应变,致使其表层晶粒细化至纳米量级.随后的气体渗氮实验表明,纳米纯铁和38CrMoAl钢发生渗氮反应的温度大大低于传统粗晶材料(＞500℃),分别降至约300℃和400℃.这种低温渗氮过程不仅有利于降低渗氮工件的变形和能耗,也为选择性渗氮技术的实现提供了新途径. |
| 关 键 词： | 纳米材料 38CrMoAl钢 铁 渗氮 表面机械研磨 |
Nitriding Iron and 38CrMoAl Steel with a Nanostructured Surface Layer |
|
| TONG Wei-Ping,TAO Nai-Rong,WANG Zhen-bo,U Jian,LU KE. Nitriding Iron and 38CrMoAl Steel with a Nanostructured Surface Layer[J]. Journal of the Graduate School of the Chinese Academy of Sciences, 2005, 22(2): 230-238 | |
| Authors: | TONG Wei-Ping TAO Nai-Rong WANG Zhen-bo U Jian LU KE |
| Abstract: | The microstructure of the surface layer on a pure iron and a 38CrMoAl steel samples was refined into the nanometer scale by means of the surface mechanical attrition treatment (SMAT) that generates repetitive severe plastic deformation in the surface layer. The subsequent nitriding kinetics of the SMAT samples with a nanostructured surface layer is greatly enhanced so that the nitriding temperatures can be reduced to 300℃ for iron and about 400℃ for 38CrMoAl steel, respectively, which are much lower than the conventional nitriding temperatures (above 500℃). The novel nitriding process not only facilitates reduction of torsion of the treated samples, but also provides a new approach for selective surface reactions of solids. |
| Keywords: | nanocrystalline materials 38CrMoAl steel iron nitridi ng surface mechanical attrition treatment |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |