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| A creep technique for monitoring the aging precipitation in Cu-Nb bainitic steels | |
| 作者姓名： | Xuemin Wang Bing Cao Guifeng Zhou Chuang Li Xinlai He |
| 作者单位： | [1]Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China [2]Editorial board of the Journal of University of Science and Technology Beijing, Beijing 100083, China [3]National Enterprise＇s Technical Center, Wuhan Iron ＆ Steel Corporation, Wuhan 430080, China |
| 摘 要： | A creep technique was applied on a Gleeble-1500 thermal simulator for monitoring the aging precipitation in ultra-low carbon steels containing various coppers. The aging hardening curve was obtained by the hardness testing. With the aid of an optical microscope and TEM, the microstructure and the aging precipitates were detected. The results indicate that when the precipitation occurs during the creep a plateau will appear on the creep curve; the left-hand and right-hand endings of the plateau correspond to the precipitation start （Ps） and finish （Pf） times, respectively. The Pf obtained from the creep curve coincides with the peak hardness time （tp） at the aging hardening curve. A precipitation-time-temperature （PTT） diagram of the steel can be obtained. |
| 关 键 词： | 超低碳贝氏体钢 铜 铌 蠕变 老化 沉淀作用 |
| 收稿时间： | 2005-03-04 |
A creep technique for monitoring the aging precipitation in Cu-Nb bainitic steels |
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| Xuemin Wang Bing Cao Guifeng Zhou Chuang Li Xinlai He.A creep technique for monitoring the aging precipitation in Cu-Nb bainitic steels[J].Journal of University of Science and Technology Beijing,2006,13(1):50-53. | |
| Authors: | Xuemin Wang Bing Cao Guifeng Zhou Chuang Li Xinlai He |
| Affiliation: | 1. Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China 2. Editorial board of the Journal of University of Science and Technology Beijing, Beijing 100083, China 3. National Enterprise's Technical Center, Wuhan Iron & Steel Corporation, Wuhan 430080, China |
| Abstract: | A creep technique was applied on a Gleeble-1500 thermal simulator for monitoring the aging precipitation in ultra-low carbon steels containing various coppers. The aging hardening curve was obtained by the hardness testing. With the aid of an optical microscope and TEM, the microstructure and the aging precipitates were detected. The results indicate that when the precipitation occurs during the creep a plateau will appear on the creep curve; the left-hand and right-hand endings of the plateau correspond to the precipitation start (Ps) and finish (Pt) times, respectively. The Pf obtained from the creep curve coincides with the peak hardness time (tp) at the aging hardening curve. A precipitation-time-temperature (PTT) diagram of the steel can be obtained. |
| Keywords: | creep ULCB (ultra-low carbon bainitic) steels aging precipitation |
| 本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录！ | |