Long term aging of various duplex stainless steels between 250 °C and 400 °C - relationship between toughness measurements and metallurgical parameters

N. Meyer; M. Mantel; A. GauthierC. Bourgin

首页> 外文期刊>Revue de Metallurgie: Cahiers d'Informations Techniques >Long term aging of various duplex stainless steels between 250 °C and 400 °C - relationship between toughness measurements and metallurgical parameters

【24h】

Long term aging of various duplex stainless steels between 250 °C and 400 °C - relationship between toughness measurements and metallurgical parameters

机译：Long term aging of various duplex stainless steels between 250 °C and 400 °C - relationship between toughness measurements and metallurgical parameters

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

Embrittlement of duplex stainless steels after aging below 500 °C is a well doc-umented phenomenon, usually attributed to the unmixing of the ferritic Fe-Cr solid solu-tion, either by spinodal decomposition or by nucleation and growth of Cr-rich a' phase, depending on aging temperature. Additional precipitation taking place during aging, like NiSiMo-rich G phase or CU-E, are also known to participate to embrittlement, making the composition dependence of embrittlement kinetics even more intricate. In this study, long term aging treatments, up to 2 years at intermediate temperature (250-400 °C), have been performed for various duplex stainless steels grades containing different alloying contents in Cr, Mo, Si, Ni and N. Impact toughness has been measured after each aging condition, and an apparent activation energy could be deduced for the various grades. This quantity is a good indicator of embrittlement resistance. Fine microstructural characterizations have been performed in the ferrite: composition before aging was determined by EPMA, and precipitation state before and after aging was observed on TEM. The influence of alloying elements on the embrittlement phenomenon is analyzed on the basis of these results and of driving force calculations performed on Thermo-Calc~R.

著录项

来源
《Revue de Metallurgie: Cahiers d'Informations Techniques》 |2011年第4期|213-223|共11页
作者
N. Meyer; M. Mantel; A. GauthierC. Bourgin;
展开▼
作者单位

UGITECH, Schmolz-Bickenbach Group, Research Centre, Avenue Paul Girod, 73403 Ugine Cedex,France;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类冶金工业;
关键词
Duplex stainless steels; low temperature aging; impact toughness;

Long term aging of various duplex stainless steels between 250 °C and 400 °C - relationship between toughness measurements and metallurgical parameters

摘要

著录项

相关主题

期刊订阅