孙雅茹,赫卿,余世文,牛轶强

• 1:沈阳工业大学理学院

摘要(Abstract)：

采用扫描电镜(SEM)和能谱分析(EDS)方法研究了拉晶速率对DZ417G合金γ'相和碳化物形态,以及对合金900℃下氧化行为的影响。结果表明,随着拉晶速率的增大,合金中γ'相细化,碳化物由细小颗粒变成棒状,合金900℃下100 h的氧化速率呈逐渐降低再升高的趋势。合金氧化层主要由3层组成,氧化外层主要为Ni、Co、Cr和V的氧化物,而在过渡层中富含Cr、Al元素,形成Cr、Al的氧化物,内层形成Ni的氧化物。当拉晶速率为7 mm/min时,合金的氧化速率最低,合金过渡层中致密的Cr、Al的氧化物层阻碍了氧的向内扩散,使合金具有良好的抗氧化性能。

关键词(KeyWords)： DZ417G合金;高温氧化;拉晶速率;氧化速率;晶粒细化

Abstract:

Keywords:

基金项目(Foundation): 辽宁省教育厅资助项目(2008502)

作者(Author): 孙雅茹,赫卿,余世文,牛轶强

DOI: 10.13289/j.issn.1009-6264.2017-0006

参考文献(References)：

• [1]Wagner A,Shollock B A,Mclean M.Grain structure development in directional solidification of nickel-base superalloy[J].Mater Sci Eng A,2004,374:270-279.
• [2]李金国,王震,金涛.抽拉速率对一种镍基单晶高温合金凝固组织的影响[J].机械工程材料,2002,26(4):17-19.LI Jin-guo,WANG Zhen,JIN Tao.Effects of withdrawal rate on microstructure of a nickel-base single crysatl superalloy[J].Materials for Mechanical Engineering,2002,26(4):17-19.
• [3]都贝宁,杨金侠,崔传勇.晶粒细化对K417G高温合金蠕变性能的影响[J].金属学报,2014,50(11):1384-1392.DU Bei-ning,YANG Jin-xia,CUI Chuan-yong.Effects ofgrain refinement on creep properties of K417G superalloy[J].Acta Metallurgica Sinica,2014,50(11):1384-1392.
• [4]杨世伟,王俊一,孙杰,等.DZ4定向凝固合金的抗高温氧化行为的研究[J].哈尔滨工程大学学报,2008(1):95-97.YANG Shi-wei,WANG Jun-yi,SUN Jie,et al.High temperature oxidation of the DZ4 directionally solidified superalloy[J].Journal of Harbin Engineering University,2008(1):95-97.
• [5]杨爱民.K4169高温合金组织细化及性能优化研究[D].西安:西北工业大学,2002.YANG Ai-min.Study of structurerefinement and optimization of mechanical proprieties for superalloy K4169[D].Xi’an:Northwestern Polytechnical University,2002.
• [6]Nijdam T J,Pers N M,Sloof W G.Oxide phase development upon high temperature oxidation ofγ-Ni Cr Al alloys[J].Materials and Corrosion,2006,57(3):269-275.
• [7]赵双群,董建新,张麦仓,等.新型镍基高温合金在950℃和1000℃的氧化行为[J].稀有金属材料与工程,2005,34(2):208-211.ZHAO Shuang-qun,DONG Jian-xin,ZHANG Mai-cang,et al.Mechanical properties and structure of a new superalloys after 700℃prolonged aging[J].Rare Metal Materials and Engineering,2005,34(2):208-211.
• [8]朱日彰,何业东,齐慧滨.高温腐蚀和耐高温腐蚀材料[M].上海:上海科学与技术出版社,1995.ZHU Ri-zhang,HE Ye-dong,QI Hui-bing.High-Temperature Corrosion and Materials of High-Temperature Resistance[M].Shanghai:Shanghai Science and Technology Press,1995.
• [9]WANG Li,JIANG Wei-guo,LI Xiang-wei,et al.Effect of surface roughness on the oxidation behavior of a directionally solidified Ni-based superalloy at 1100℃[J].Acta Metallurgica Sinica(English Letters),2015,28(3):381-38.
• [10]WUJ Hui-bin,WANG Di,ZHANG Peng,et al.Influences of alloying elements on oxidation behavior of steels and microstructure of oxide scales[J].Journal of Iron and Steel Research International,2016,23(3):231-237.
• [11]Al-Hatab K A,Alariqi F S,Al-Bukhaiti M A,et al.Cyclic oxidation kinetics and oxide scale morphologies developed on the IN600 superalloy[J].Oxidation of Metals,2011,76(5/6):385-398.

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