高锰高铝钢高温氧化动力学行为的探索研究  

Exploration and study on high temperature oxidation dynamic behavior of high Mn and high Al steels

作　　者：孟庆勇 门超奇 宋明明[3] 朱航宇[3] 薛正良[3] MENG Qingyong;MEN Chaoqi;SONG Mingming;ZHU Hangyu;XUE Zhengliang(Technical Center,Tangshan Iron and Steel Group Co.,Ltd.,Tangshan 063000,Hebei,China;Xinyu Iron and Steel Co.,Ltd.,Xinyu 3380ol,Jiangxi,China;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steelmaking,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China)

机构地区：[1]河钢集团唐钢公司技术中心,河北唐山063000 [2]新余钢铁股份有限公司,江西新余338001 [3]武汉科技大学钢铁冶金新工艺湖北省重点实验室,湖北武汉430081

出　　处：《钢铁研究学报》2024年第5期615-626,共12页Journal of Iron and Steel Research

基　　金：国家自然科学基金面上资助项目(52074199);河北省“三三三人才工程”资助项目(C20231026)。

摘　　要：为了初步探明表面粗糙状态及氧化气氛对高锰高铝钢高温氧化动力学的影响规律,利用氧化增重法研究了1000℃和1250℃表面粗糙状态及氧化气氛对高锰高铝钢氧化行为的影响规律。结论如下:1000和1250℃不同表面粗糙状态样品在空气中的氧化过程均遵循抛物线规律。表面粗糙状态在1000℃时对氧化过程影响不大,不同表面状态的样品氧化增重差异不大。而表面粗糙状态在1250℃氧化时间在60min以内表面状态对氧化增重影响仍然不大,各样品的氧化增重差异不大;而氧化时间超过60min后,不同型号砂纸预磨样品氧化增重差异变大,氧化增重比例从大到小的顺序为400目(38μm)>2000目(6.5μm)>抛光>80目(178μm)。气氛中通入氧气时,1000℃氧化过程遵循抛物线规律,1250℃氧化80min内仍遵循抛物线规律,氧化超过80min后氧化增重遵循直线规律。在相同温度下空气和通氧气氛产生的氧化皮物相种类差别不大。不同的氧化温度形成的氧化皮物相组成略有差别,1000℃时氧化皮的主要物相为FeO、(FeO)_(0.798)(MnO)_(0.202)、Mn_(3)O_(4)、MnFe_(2)O_(4)、Fe_(3)O_(4)和Al_(2)O_(3);1250℃时氧化皮的主要物相为FeO、(FeO)_(0.798)(MnO)_(0.202)、MnFe_(2)O_(4)、FeMn_(2)O_(4)、Fe_(3)Mn_(3)O_(8)和Al_(2)O_(3)。1250℃通氧氧化时Al2O3的含量明显高于空气中的氧化结果。In order to preliminary investigate the effect of surface roughness state and oxidation atmosphere on the oxidation kinetics of high manganese and high aluminum steel at high temperature,the effects of surface roughness state and oxidation atmosphere on the oxidation behavior of high manganese and high aluminum steel at 1000℃and 1250℃were studied by means of oxidation weight gain method.The conclusion is as follows:the oxidation process of the sample in air under different surface roughness conditions at 1000 and 1250°C all follow parabolic rule.At 1 ooo℃,the oxidation weight gain of samples with different surface states was almost the same.At 1250 C,the surface state has a little effect on the oxidation weight gain within 60 min.After oxidation longer than 60 min,the oxidation weight gain ratio of preground samples in the order from large to small was 38μm>6.5μm>polished>178μm.When oxygen is introduced into the atmosphere,the oxidation process still follows the parabolic rule at 1000℃.When the oxidation rule at 1250℃within 80 min,the parabolic rule is followed,while the linear rule is followed when oxidation time longer than 80 min.At the same temperature,there is little difference between the oxide phase composition of air and oxygen atmosphere.The oxide phase composition is slightly different with different oxidation temperatures.At 1000℃,the main phase composition of the 0xide is FeO,(FeO)_(0.798),(MnO)_(0.202),Mn_(3)O_(4),MnFe_(2)O_(4),Fe_(3)O_(4) and Al_(2)O_(3).At 1250℃,the main phase composition of the oxide is FeO,(FeO)_(0.798),(MnO)_(0.202),MnFe_(2)O_(4),FeMn_(2)O_(4),Fe_(3)Mn_(3)O_(8) and Al_(2)O_(3).The content of Al_(2)O_(3)during oxygen oxidation at 1250℃is significantly higher than that in air oxidation.

关 键 词：高锰高铝钢 高温氧化 氧化动力学 表面形态 氧化机制 

分 类 号：TG142.1[一般工业技术—材料科学与工程]