A Study of Submicron Grain Boundary Precipitates in Ultralow Carbon 316LN Steels
文献类型：期刊论文
| 作者 | S. Downey ; K. Han ; P. N. Kalu ; K. Yang ; Z. M. Du |
| 刊名 | Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
 |
| 出版日期 | 2010 |
| 卷号 | 41A期号:4页码:881-887 |
| 关键词 | electron backscatter diffraction austenitic stainless-steels m23c6 carbide microstructure temperature toughness evolution |
| ISSN号 | 1073-5623 |
| 中文摘要 | This article reports our efforts in characterization of an ultralow carbon 316LN-type stainless steel. The carbon content in the material is one-third that in a conventional 316LN, which further inhibits the formation of grain boundary carbides and therefore sensitizations. Our primary effort is focused on characterization of submicron size precipitates in the materials with the electron backscatter diffraction (EBSD) technique complemented by Auger electron spectroscopy (AES). Thermodynamic calculations suggested that several precipitates, such as M(23)C(6), Chi, Sigma, and Cr(2)N, can form in a low carbon 316LN. In the steels heat treated at 973 K (700 A degrees C) for 100 hours, a combination of EBSD and AES conclusively identified the grain boundary precipitates (a parts per thousand yen100 nm) as Cr(2)N, which has a hexagonal closed-packed crystallographic structure. Increases of the nitrogen content promote formation of large size Cr(2)N precipitates. Therefore, prolonged heat treatment at relatively high temperatures of ultralow carbon 316LN steels may result in a sensitization. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31079]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | S. Downey,K. Han,P. N. Kalu,et al. A Study of Submicron Grain Boundary Precipitates in Ultralow Carbon 316LN Steels[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2010,41A(4):881-887. |
| APA | S. Downey,K. Han,P. N. Kalu,K. Yang,&Z. M. Du.(2010).A Study of Submicron Grain Boundary Precipitates in Ultralow Carbon 316LN Steels.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,41A(4),881-887. |
| MLA | S. Downey,et al."A Study of Submicron Grain Boundary Precipitates in Ultralow Carbon 316LN Steels".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 41A.4(2010):881-887. |
入库方式： OAI收割
来源：金属研究所
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