| 工业7N01合金的显微组织、力学性能及腐蚀性能 |
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| 引用本文： | 赵沛浩,吴晓蓝,刘阳,高坤元,文胜平,魏午,荣莉,黄晖,吴宏,周德敬,张倩,聂祚仁. 工业7N01合金的显微组织、力学性能及腐蚀性能[J]. 中国有色金属学会会刊, 2022, 32(3): 778-789. DOI: 10.1016/S1003-6326(22)65832-1 |
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| 作者姓名： | 赵沛浩 吴晓蓝 刘阳 高坤元 文胜平 魏午 荣莉 黄晖 吴宏 周德敬 张倩 聂祚仁 |
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| 摘 要： | 通过透射电子显微镜(TEM)和配备电子背散射衍射(EBSD)的扫描电子显微镜(SEM)研究晶粒形貌和析出相对两种工业7N01合金的力学性能和腐蚀行为的影响.7N01-I合金外表面再结晶度低于7N01-II合金.两种合金的强化相均为η'相.7N01-I合金的晶界析出相(GBPs)断续分布,而7N01-II合金的晶界析出相...
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| 关 键 词： | 7N01合金 显微组织 力学性能 腐蚀行为 |
| 收稿时间： | 2021-04-12 |
Microstructure,mechanical properties and corrosion behavior of commercial 7N01 alloys |
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| Affiliation: | 1. Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China;2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;3. Jiangsu Key Laboratory for Clad Materials, Yin Bang Clad Material Co., Ltd., Wuxi 214145, China;4. Metal & Chemistry Institute, China Academy of Railway Sciences Corporation Limited, Beijing 100081, China |
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| Abstract: | The effect of grain morphology and precipitates on mechanical properties and corrosion behavior of two commercial 7N01 alloys was studied using transmission electron microscopy (TEM) and scanning electron microscopy (SEM) equipped with electron backscatter diffraction (EBSD). Results showed that the recrystallization degree of the outer surface of 7N01-I alloy was lower than that of 7N01-II alloy. The main strengthening precipitates of two alloys were mainly η’ phases. The grain boundary precipitates (GBPs) of 7N01-I alloy distributed discontinuously, while those of 7N01-II alloy distributed continuously. The strength of two 7N01 alloys was similar, but the maximum corrosion depth of 7N01-I alloy was less than that of 7N01-II alloy, because the discontinuous GBPs and the lower recrystallization degree of outer surface of 7N01-I alloy were favorable for improving corrosion behavior. Different models of strengthening mechanism were discussed, and the corrosion behavior was correlated with microstructure. |
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| Keywords: | 7N01 alloys microstructure mechanical properties corrosion behavior |
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