Inconel 740H合金在纯水蒸气环境中的高温氧化行为
High Temperature Oxidation Behavior of Inconel Alloy 740H in Pure Steam
摘 要
通过高温氧化试验研究了Inconel 740H合金在750 ℃的动态纯水蒸气环境中的氧化行为。结果表明: Inconel 740H合金的氧化增重近似遵循抛物线规律, 随氧化时间的延长氧化产物粗大; 氧化膜形貌与在干燥空气中氧化的明显不同, 但未发现明显的氧化膜开裂和剥落现象; 合金氧化100 h后形成连续的Cr2O3氧化膜, 氧化膜厚度随着氧化时间的增加而增大; 氧化1 000 h后形成的氧化膜主要由Cr2O3和少量的(Mn, Ni)Cr2O4尖晶石组成, 靠近氧化膜的合金内部出现明显的贫铬区, 并伴生少量的Al2O3和TiO2内氧化产物。
纯水蒸气
高温氧化
超超临界机组
Inconel alloy 740H
pure steam
oxidation
ultra-supercritical power station
Abstract
The oxidation behavior of Inconel alloy 740H in dynamic pure steam at 750 ℃ was studied with high temperature oxidation test. The results show that the mass gain of Inconel alloy 740H during oxidation followed a parabolic law approximately. The oxide products grew coarse with the increase of oxidation time. The scale morphology was significantly different from those after oxidation in dry air. But non obvious cracks and spallation were observed. After oxidation for 100 h, the protective Cr2O3 film formed on the surface. The thickness of oxide film increased with time increasing. After oxidation for 1 000 h, the oxide film was composed of Cr2O3 and a small amount of (Mn, Ni)Cr2O4 spinel. Beneath the oxide scale, chromium depletion region was found and a small amount of inner oxides identified as Al2O3 and TiO2 were observed.
中图分类号 TG132.3 DOI 10.11973/jxgccl201510009
所属栏目 试验研究
基金项目 国家自然科学基金青年基金资助项目(51301130; 51301131)
收稿日期 2014/8/18
修改稿日期 2015/7/1
网络出版日期
作者单位点击查看
备注鲁金涛(1984-), 男, 河北唐山人, 高级工程师。
引用该论文: LU Jin-tao,YANG Zhen,XU Song-qian,ZHAO Hai-ping,ZHAO Xin-bao,GU Yue-feng. High Temperature Oxidation Behavior of Inconel Alloy 740H in Pure Steam[J]. Materials for mechancial engineering, 2015, 39(10): 37～41
鲁金涛,杨珍,徐松乾,赵海平,赵新宝,谷月峰. Inconel 740H合金在纯水蒸气环境中的高温氧化行为[J]. 机械工程材料, 2015, 39(10): 37～41
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参考文献
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【3】赵双群, 董建新, 张麦仓, 等.新一代超级超临界锅炉过热器用管材Inconel 740［J］.钢铁研究学报, 2003, 15(7): 160-164.
【4】EVANS N D, MAZIASZ P J, SWINDEMAN R W. Microstructure and phase stability in INCONEL alloy 740 during creep［J］. Scripta Materialia, 2004, 51(6): 503-507.
【5】SHINGLEDECKER J P, PHARR G M.The role of eta phase formation on the creep strength and ductility of INCONEL Alloy 740 at 1 023 K (750 ℃)［J］. Metallurgical and Materials Transactions, 2012, 43: 1902-1910.
【6】CHONG Yan, LIU Zheng-dong, GODFREY A, et al. Microstructure evolution and mechanical properties of Inconel 740H during aging at 750 °C［J］.Materials Science & Engineering A, 2014, 589: 153-164.
【7】ZHAO Shuang-qun, XIE Xi-shan, SMITH G D, et al. Research and Improvement on structure stability and corrosion resistance of nickel-base superalloy INCONEL alloy 740［J］. Materials and Design, 2006, 27(10): 1120-1127.
【8】NATESAN K, PARK J H. Fireside and steam side corrosion of alloys for USC plants［J］.International Journal of Hydrogen Energy, 2007, 32(16): 3689-3697.
【9】COWEN C J, DANIELSON P E, JABLONSKI P D. The microstructural evolution of Inconel alloy 740 during solution treatment, aging, and exposure at 760 ℃［J］.Journal of Materials Engineering and Performance, 2011, 20(6): 1078-1083.
【10】TAKEDA Y, KANAYA M, YAMAMOTO S, et al. Oxidation and cracking behavior of Nickel base superalloys under bending stress in advanced steam condition beyond 700 ℃［M］//CENK F, CHI Y, WANG F.Challenges of Power Engineering and Environment.［S.l.］: Springer Berlin Heidelberg, 2007: 1031-1036.
【11】BERTHOD P, ARANDA L, MATHIEU S, et al.Influence of water vapour on the rate of oxidation of a Ni-25wt.% Cr alloy at high temperature［J］. Oxidation of Metals, 2013, 79(5/6): 517-527.
【12】GUILLOU S, CABET C, DESGRANGES C. Influence of hydrogen and water vapour on the kinetics of chromium oxide growth at high temperature［J］. Oxidation of Metals, 2011, 76: 193-214.
【13】ASTEMAN H, SVENSSON J E, NORELL M, et al.Influence of water vapour and flow rate on the high-temperature oxidation of 304L: effect of chromium oxide hydroxide evaporation［J］. Oxidation of Metals, 2000, 54(1/2): 11-26.
【14】ESSUMAN E, MEIER G H, ZUREK J, et al. Protective and non-protective scale formation of NiCr alloys in water vapour containing high- and low-pO2 gases［J］. Corrosion Science, 2008, 50(6): 1753-1760.
【15】PUJILAKSONO B, JONSSON T, HALVARSSON M, et al. Paralinear oxidation of chromium in O2+H2O environment at 600-700 ℃［J］. Oxidation of Metals, 2008, 70(3/4): 163-188.
【16】YAMAUCHI A, SUZUKI Y, SAKAGUCHI N, et al. Microstructure and analysis of oxide scales formed on Cr-Si-Ni compacts in air and H2O-containing atmosphere［J］. Corrosion Science, 2010, 52(6): 2098-2103.
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【18】ASTEMAN H, SVENSSON J E, JOHANSSON L G. Oxidation of 310 steel in H2O/O2 mixtures at 600°C: the effect of water vapour enhanced chromium evapouration［J］.Corrosion Science, 2002, 44(11): 2635-2649.
【19】CASTANEDA S I, PEREZ F J. Microstructure and volatile species determination of ferritic/martensitic FB2 steel in contact with Ar+40% H2O at high temperatures［J］. Oxidation of Metals, 2013, 79(1/2): 147-166.
【20】叶长江, 沈嘉年, 李铁藩. 合金元素硅和铈对镍铬合金高温氧化行为的协同作用［J］. 中国腐蚀与防护学报, 1993, 13(3): 229- 235.
【21】ISHITSUKA T, INOUE Y, OGAWA H.Effect of silicon on the steam oxidation resistance of a 9% Cr heat resistant steel［J］. Oxidation of Metals, 2004, 61(1/2): 125-141.
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