| 基于热力学计算的水工况对耐热钢高温氧化行为影响 |
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| 引用本文： | 杨丽,侯雅青,乔越,闫爱军,王畅畅. 基于热力学计算的水工况对耐热钢高温氧化行为影响[J]. 金属功能材料, 2021, 28(2): 29-36. DOI: 10.13228/j.boyuan.issn1005-8192.202000133 |
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| 作者姓名： | 杨丽 侯雅青 乔越 闫爱军 王畅畅 |
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| 作者单位： | 中国钢研科技集团有限公司数字化研发中心,北京100081;钢铁研究总院工程用钢研究所,北京100081;西安热工研究院有限公司,陕西西安710054;北京钢研新材科技有限公司,北京100081 |
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| 基金项目： | 国家重点研发计划资助项目(2017YFB0701801,2017YFB0703002);国家自然科学基金资助项目(51701044)。 |
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| 摘 要： | 基于热力学计算方法,对6种不同的水工况条件下的高温氧分压进行了计算和对比.计算结果显示,TP347H和T91两种材料在570℃时高温氧化产物类型转变的临界氧分压约为1.0×10-15,而常规的加氧工况OT(1)、纯水工况、还原性全挥发处理工况AVT(R1)在此条件下的氧分压均高于1.0×10-10,因此认为常规的加氧工...
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| 关 键 词： | 高温氧化 热力学计算 耐热钢 水工况 |
Influence of water conditions on high temperature oxidation behavior of heat resistance steels through thermal calculation |
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| YANG Li,HOU Yaqing,QIAO Yue,YAN Aijun,WANG Changchang. Influence of water conditions on high temperature oxidation behavior of heat resistance steels through thermal calculation[J]. Metallic Functional Materials, 2021, 28(2): 29-36. DOI: 10.13228/j.boyuan.issn1005-8192.202000133 |
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| Authors: | YANG Li HOU Yaqing QIAO Yue YAN Aijun WANG Changchang |
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| Affiliation: | (Material Digital R and D Center,CISRI Group,Beijing 100081,China;Department of Structural Steels,CISRI,Beijing100081,China;Xi′an Thermal Power Research Institute Co.,Ltd.,Xi′an 710054,Shaanxi,China;Beijing MatDao Technology Co.,Ltd.,Beijing 100081,China) |
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| Abstract: | The oxygen partial pressure at high temperature for six different water conditions had been calculated and compared with the thermal calculation method. It was obtained that the critical oxygen partial pressure at 570 ℃ are 1.0×10-15 for both TP347 H and T91 materials, at which it occured the transformation of high temperature oxidation products. However, the calculated oxygen partial pressure for water conditions OT(1), pure water and AVT(R1) at this temperature were all higher than 1.0×10-10, and then it could conclude that the normal water conditions such as adding oxygen conditions and reductive total volatilization treatment conditions should have the similar thermal controlling effect on the high temperature oxidation products for materials TP347 H and T91. The type of oxidation products varied as the content of the alloying elements changed. The volume fraction of dense Cr2O3 in the skin layer would increase as the content of Cr increased. For the new Fe-18 Ni-25 Cr-xAl material, as the content of Al increased, the mass fraction of(Fe, Cr, Al)2O3 increased. Furthermore, it found that Al2O3 would form in the skin layer as the Al content was higher than 3%, and then it could have better effect on high temperature oxidation protection. |
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| Keywords: | high temperature oxidation thermal calculation heat resistance steel water condition |
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