| 300M钢的高温氧化行为 |
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| 引用本文： | 夏伟军,赵青卿,袁武华,张海成. 300M钢的高温氧化行为[J]. 金属热处理, 2020, 45(11): 49-55. DOI: 10.13251/j.issn.0254-6051.2020.11.010 |
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| 作者姓名： | 夏伟军 赵青卿 袁武华 张海成 |
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| 作者单位： | 1.湖南大学 材料科学与工程学院, 湖南 长沙 410082;2.湖南大学 喷射沉积技术及应用湖南省重点实验室, 湖南 长沙 410082;3.中国第二重型机械集团有限公司 万航模锻有限责任公司, 四川 德阳 618000 |
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| 摘 要： | 研究了300M钢在700~1200 ℃高温下的氧化行为,利用扫描电镜(SEM)和X射线衍射仪等手段观察分析了氧化层的表面形貌、微观组织结构成分,并结合氧化动力学曲线,分析了300M钢在700~1200 ℃高温氧化的氧化机理。研究结果表明,300M钢在700~1200 ℃的氧化遵循抛物线规律。高温条件下其氧化皮为典型的3层结构,即内氧化层、中间氧化层及外氧化层,中间氧化层又分为多孔层和疏松层。当氧化温度为1200 ℃时,FeO层晶粒内部的合金化元素Si、Cr等快速聚集并形成粗大的氧化物,此时FeO层完全失去抗氧化作用,氧化速率急剧加快。
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| 关 键 词： | 300M钢 高温氧化 氧化动力学 氧化皮 氧化机理 |
| 收稿时间： | 2020-04-26 |
High temperature oxidation behavior of 300M steel |
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| Xia Weijun,Zhao Qingqing,Yuan Wuhua,Zhang Haicheng. High temperature oxidation behavior of 300M steel[J]. Heat Treatment of Metals, 2020, 45(11): 49-55. DOI: 10.13251/j.issn.0254-6051.2020.11.010 |
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| Authors: | Xia Weijun Zhao Qingqing Yuan Wuhua Zhang Haicheng |
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| Affiliation: | 1. School of Materials Science and Engineering, Hunan University, Changsha Hunan 410082, China;2. Hunan Provincial Key Laboratory of Spray Deposition Technology and Application, Hunan University, Changsha Hunan 410082, China;3. Wan Hang Die Forging Co., Ltd., China National Erzhong Group Co., Ltd., Deyang Sichuan 618000, China |
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| Abstract: | Oxidation behavior of the 300M steel at high temperature between 700-1200 ℃ was investigated. Surface morphologies of oxide layer and the oxide structure were investigated by means of SEM and XRD. Combined with the analysis of oxidation kinetics curves, the oxidation mechanism of the 300M steel between 700-1200 ℃ was analyzed. The results show that the 300M steel presents parabolic law in the temperature range of 700-1200 ℃. At high temperature, the oxide scale of the 300M steel has a typical three-layer structure, which is the outer layer, the middle layer, and the inner layer, and the inner layer is divided into porous layer and loose layer. When the oxidation temperature is 1200 ℃, the alloying elements Si and Cr in the FeO layer grains rapidly aggregate and form coarse oxides, at this time, the FeO layer completely loses its antioxidant effect, and the oxidation rate accelerates sharply. |
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| Keywords: | 300M steel high temperature oxidation oxidation kinetics oxide scale oxidation mechanism |
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