316L奥氏体不锈钢中时效条件下析出相演变行为的研究

材料研究学报

2009, Vol. 23

Issue (3): 269-274

研究论文

本期目录 | 过刊浏览

316L奥氏体不锈钢中时效条件下析出相演变行为的研究

丁秀平; 刘雄; 何燕霖; 符仁钰; 李麟

上海大学材料科学与工程学院上海 200072

Evolution of precipitated phase during aging treatment in 316L austenitic stainless steel

DING Xiuping ; LIU Xiong; HE Yanlin; FU Renyu; LI Lin

School of Materials Science and Engineering; Shanghai University; Shanghai 200072

引用本文:

丁秀平刘雄何燕霖符仁钰李麟. 316L奥氏体不锈钢中时效条件下析出相演变行为的研究[J]. 材料研究学报, 2009, 23(3): 269-274.
. Evolution of precipitated phase during aging treatment in 316L austenitic stainless steel[J]. Chin J Mater Res, 2009, 23(3): 269-274.

全文: PDF(827 KB)

摘要:

通过定量金相、SEM & EDS、TEM等实验技术分析316L奥氏体不锈钢中析出相随时效时间、温度的变化, 并测定析出相的体积分数与尺寸. 结合热力学计算表明: 在316L奥氏体不锈钢中, 经850℃时效处理后, 析出相为M₂₃C₆型碳化物, 且随着时效时间的延长, 析出量明显增多, 尺寸增大; 经650℃时效处理100 h后, 主要析出相类型为χ相.

关键词 ：金属材料, 316L奥氏体不锈钢, 时效处理, 析出相, M₂₃C₆型碳化物

Abstract：

The effects of the aging temperature and time on precipitation behavior of 316L austenitic stainless steel were analyzed, and the volume fraction and the sizes of the precipitates were determined. By the thermodynamic calculation with the update database, the results show that the precipitated phase in 316L austenitic stainless steel was M₂₃C₆ type carbide after aging at 850℃, and the amount and size of M₂₃C₆ were increased with enhanced aging time. After aging at 650℃ for 100 h, the precipitated phase in steel was mainly composed of χ phase.

Key words： metallic materials 316L austenitic stainless steel aging treatment precipitated phase M₂₃C₆ carbide

收稿日期: 2008-12-05

ZTFLH:

TG142

基金资助:

国家自然科学基金50671061资助项目, 长江学者和创新团队发展计划IRT0739和上海市优秀青年教师科研专项基金资助项目.

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