晶粒尺寸对P91钢水蒸气氧化行为的影响
Effect of Grain Size on Oxidation Behavior of P91 Steel in Water Vapor
摘 要
在自制的水蒸气氧化装置中,对两种具有不同晶粒度的P91钢进行了水蒸气等温氧化试验,对表面氧化膜进行了形貌观察、能谱分析和X射线衍射分析.结果表明:两种P91钢的氧化动力学曲线均具有抛物线特征,在650℃氧化300 h后,粗晶粒钢的氧化质量增加明显高于细晶粒钢的;两种钢氧化结果的差异是由于细晶粒P91钢在氧化初期(30 h内)能更快地形成富铬的氧化层,阻碍了铁离子的向外扩散,从而有效地降低了氧化速率.
氧化
晶粒度
扩散
耐热钢
water vapor
oxidation
grain size
diffusion
heat resistant steel
Abstract
Isothermal oxidation test was carried out for two P91 steels with different grain sizes in water vapor by using a self-designed tubular device.The oxidation film was studied by means of SEM,XRD and EDS.The results show that oxidation kinetic curves obeyed the parabolic law.P91 steel with coarse grain exhibited more weight gain than that of with fine grain at 650℃ in water vapor for 300 h.A Cr-rich oxide layer formed sooner on fine grain P91 steel at the initial stage (<30 h),the outward diffusion of iron ion was retarded by this layer and so the oxidation rate was decreased.
中图分类号 TG174
所属栏目 新材料 新工艺
基金项目
收稿日期 2008/7/8
修改稿日期 2009/2/14
网络出版日期
作者单位点击查看
备注岳增武(1969-),男,安徽砀山人,博士研究生.
引用该论文: YUE Zeng-wu,FU Min,LI Xin-geng,TIAN Xue-lei. Effect of Grain Size on Oxidation Behavior of P91 Steel in Water Vapor[J]. Materials for mechancial engineering, 2009, 33(7): 98～101
岳增武,傅敏,李辛庚,田学雷. 晶粒尺寸对P91钢水蒸气氧化行为的影响[J]. 机械工程材料, 2009, 33(7): 98～101
被引情况:
【1】龙会国,谢国胜,龙毅,李登科, "T23钢管蒸汽侧氧化层的微观结构及形成机理",机械工程材料 38, 42-45(2014)
【2】郁明浩,王小威,巩建鸣,姜 勇, "拉应力对P92马氏体耐热钢高温氧化行为的影响",机械工程材料 40, 90-93(2016)
【3】王斌,刘正东,程世长,刘春明,包汉生,王敬忠, "NF709奥氏体耐热钢700 ℃的蒸汽氧化行为",腐蚀与防护 34, 279-282(2013)
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参考文献
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【3】WRIGHT I G,PINT B A.An assessment of the high-temperature oxidation behavior of Fe-Cr steels in water vapor and steam[R].Denver: NACE CORROSION,2002.
【4】李铁藩.金属的高温氧化和热腐蚀[M].北京:化学工业出版社,2003.
【5】CHEN Y,SRIDHARAN K,ALEN T.Corrosion behavior of ferritic-martensitic steel T91 in supercritical water[J].Corrosion Science,2006,48:2843-2854.
【6】朱日彰,何业东,齐慧滨.高温腐蚀及耐高温腐蚀材料[M].上海:上海科学技术出版社,1995.
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【9】李辛庚,傅敏,何家文.喷丸对TP304钢高温水蒸气氧化行为的作用[J].材料科学与工艺,2004,12(3):253-257.
【10】CRUPP U,TRINDADE V B.The effect of grain boundary diffusion on the oxidation of low chromium steels[J].Defect and Diffusion Forum,2005(237/240):946-951.
【11】VICENTE B T,BODRIGO B,BEHZAD Z H,et al.High-temperature oxidation of pure Fe and the ferritic steel 2.25Cr-1Mo[J].Materials Research,2005,8(4):365-369.
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