铼含量对第四代镍基单晶高温合金凝固组织的影响
Effect of Re Content on Solidification Structure of Fourth Generation Nickel-Based Single Crystal Superalloy
摘 要
以第四代镍基单晶高温合金DD15为基础,将其铼含量(质量分数)分别调整为5%,6%,7%制备单晶高温合金,研究了铼含量对合金凝固组织特征与元素分布的影响。结果表明:随铼含量的增加,试验合金的γ'相析出温度、溶解温度升高,固相线温度略微下降,液相线温度无明显变化;增加铼含量,合金一次枝晶间距与二次枝晶间距均增大,(γ+γ')共晶组织含量增多,γ'相尺寸减小,体积分数降低;铼含量的增加使得合金组织中负偏析元素铼、钨、钼、铬、钴的偏析程度降低,但正偏析元素钽的偏析程度增大。
铼
凝固组织特性
元素偏析
nickel-based single crystal superalloy
Re
solidification microstructure characteristic
elemental segregation
Abstract
Based on the fourth generation nickel-based single crystal superalloy DD15, single crystal superalloys were prepared by adjusting its Re content (mass fraction) to 5%, 6% and 7%, respectively. The effects of Re content on the solidification microstructure characteristic and element distribution of the alloy were studied. The results show that with increasing Re content, the precipitation temperature and dissolution temperature of γ' phase of the alloy increased, while the solidus temperature decreased slightly and the liquidus temperature had no obvious change. With increasing Re content, both the primary and secondary dendrite spacings increased, the content of (γSymbolk@@γ') eutectic microstructure increased, while the size and volume fraction of γ' phase decreased. Increase in Re content could decrease the segregation degree of negative segregation elements such as Re, W, Mo, Cr and Co in the alloy structure, but increase the segregation degree of the positive segregation element Ta.
中图分类号 TG132.3 DOI 10.11973/jxgccl202208003
所属栏目 试验研究
基金项目 国家科技重大专项项目(2017-VI-0002-0071,J2019-VI-0020-0136);国家自然科学基金资助项目(51874090)
收稿日期 2021/11/29
修改稿日期 2022/7/22
网络出版日期
作者单位点击查看
备注王磊(1961-),男,河北滦县人,教授,博士
引用该论文: WANG Lei,LIU Yang,SONG Xiu,SUN Shixin,LIU Shizhong,LI Jiarong. Effect of Re Content on Solidification Structure of Fourth Generation Nickel-Based Single Crystal Superalloy[J]. Materials for mechancial engineering, 2022, 46(8): 15～21
王磊,刘杨,宋秀,孙世鑫,刘世忠,李嘉荣. 铼含量对第四代镍基单晶高温合金凝固组织的影响[J]. 机械工程材料, 2022, 46(8): 15～21
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参考文献
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【21】于兴福,田素贵,卢旭东,等.单晶镍基合金蠕变期间γ'相的定向生长及影响因素[J].稀有金属材料与工程,2009,38(3):434-438.YU X F,TIAN S G,LU X D,et al.Directional diffusion and influencing factors of elements during creep of nickel-base single crystal superalloys[J].Rare Metal Materials and Engineering,2009,38(3):434-438.
【22】BLAVETTE D,CARON P,KHAN T.An atom probe investigation of the role of rhenium additions in improving creep resistance of Ni-base superalloys[J].Scripta Metallurgica,1986,20(10):1395-1400.
【2】GIAMEI A F.Development of single crystal superalloys:A brief history[J].Advanced Materials&Processes,2013,171(9):26-30.
【3】SIMS C T, STOLOFF N S, HAGEL W C.Superalloy Ⅱ:High-temperature materials for aerospace and industrial power[M].New York:John Wiley and Sons, 1987:1-226.
【4】KHAN T, CARON P.Development of a new single crystal superalloy for industrial gas turbine blades[C]//Proceedings of a Conference on High Temperature Materials for Power Engineering.Dordrecht:Kluwer Academic Publishers Group, 1990:1261-1270.
【5】孙晓峰,金涛,周亦胄,等.镍基单晶高温合金研究进展[J].中国材料进展,2012,31(12):1-11.SUN X F,JIN T,ZHOU Y Z,et al.Research progress of nickel-base single crystal superalloys[J].Materials China,2012,31(12):1-11.
【6】GIAMEI A F,ANTON D L.Rhenium additions to a Ni-base superalloy:Effects on microstructure[J].Metallurgical Transactions A,1985,16(11):1997-2005.
【7】骆宇时,李嘉荣,刘世忠,等.Re对单晶高温合金持久性能的强化作用[J].材料工程,2005,33(8):10-14.LUO Y S,LI J R,LIU S Z,et al.Strengthening effect of Re on stress rupture properties of single crystal superalloys[J].Journal of Materials Engineering,2005,33(8):10-14.
【8】常剑秀,王栋,董加胜,等.铼对镍基单晶高温合金恒温氧化行为的影响[J].材料研究学报,2017,31(9):695-702.CHANG J X,WANG D,DONG J S,et al.Effect of rhenium addition on isothermal oxidation behavior of a nickel-base single crystal superalloy[J].Chinese Journal of Materials Research,2017,31(9):695-702.
【9】黄太文,卢晶,许瑶,等.Re和Ta对抗热腐蚀单晶高温合金900℃长期时效组织稳定性的影响[J].金属学报,2019,55(11):1427-1436.HUANG T W,LU J,XU Y,et al.Effects of rhenium and tantalum on microstructural stability of hot-corrosion resistant single crystal superalloys aged at 900℃[J].Acta Metallurgica Sinica,2019,55(11):1427-1436.
【10】AI C,LIU G,LIU L,et al.Effects of Re and Ru additions on solidification partition coefficients and solidification characteristic temperatures of nickel base single crystal superalloys[J].Rare Metal Materials and Engineering,2012,41(8):1336-1340.
【11】孙德建,刘林,焦娟娟,等.铼和碳对单晶高温合金凝固特性和杂晶形成倾向性的影响[C]//第十三届中国高温合金年会摘要文集.北京:冶金工业出版社,2015:133.SUN D J, LIU L, JIAO J J, et al.Effects of rhenium and carbon on solidification characteristics and impurity formation tendency of single crystal superalloys[C]//Collection of Abstracts of the 13th China Superalloys Annual Conference.Beijing:Metallurgical Industry Press,2015:133.
【12】王栋.两种定向柱晶高温合金微观组织和蠕变机制的研究[D].北京:中国科学院大学,2010:32-37.WANG D.Study on the microstructure and creep mechanism of two oriented columnar superalloys[D].Beijing:University of Chinese Academy of Sciences,2010:32-37.
【13】史振学,岳晓岱,王志成,等.Re含量对单晶高温合金组织和拉伸性能的影响[J].有色金属科学与工程,2020,11(4):113-118.SHI Z X,YUE X D,WANG Z C,et al.Effects of Re content on the microstructure and tensile properties of a single crystal superalloy[J].Nonferrous Metals Science and Engineering,2020,11(4):113-118.
【14】史振学,刘世忠.Al含量对镍基单晶高温合金组织和持久性能的影响[J].有色金属科学与工程,2019,10(2):77-82.SHI Z X,LIU S Z.Influence of Al content on microstructure and stress rupture properties a Ni-base single crystal superalloy[J].Nonferrous Metals Science and Engineering,2019,10(2):77-82.
【15】WANDERKA N,GLATZEL U.Chemical composition measurements of a nickel-base superalloy by atom probe field ion microscopy[J].Materials Science and Engineering:A,1995,203(1/2):69-74.
【16】刘刚,刘林,张胜霞,等.Re和Ru对镍基单晶高温合金组织偏析的影响[J].金属学报,2012,48(7):845-852.LIU G,LIU L,ZHANG S X,et al.Effects of Re and Ru on microstructure and segregation of Ni-based single-crystal superalloys[J].Acta Metallurgica Sinica,2012,48(7):845-852.
【17】刘少华.镍基单晶高温合金多元素协同效应与合金成分优化[D].北京:清华大学,2017:40-51.LIU S H.Synergistic effect of elements and optimization of composition for Ni-based superalloys[D].Beijing:Tsinghua University,2017:40-51.
【18】刘刚,韩振华,杨鑫.镍基单晶高温合金凝固偏析的表征方法比较[J].热加工工艺,2018,47(21):93-96.LIU G,HAN Z H,YANG X.Comparison of characterization methods for solidification segregation of Ni-based single-crystal superalloy[J].Hot Working Technology,2018,47(21):93-96.
【19】HECKL A,RETTIG R,SINGER R F.Solidification characteristics and segregation behavior of nickel-base superalloys in dependence on different rhenium and ruthenium contents[J].Metallurgical and Materials Transactions A,2009,41(1):202-211.
【20】JANOTTI A,KRCMAR M,FU C L,et al.Solute diffusion in metals:Larger atoms can move faster[J].Physical Review Letters,2004,92(8):085901.
【21】于兴福,田素贵,卢旭东,等.单晶镍基合金蠕变期间γ'相的定向生长及影响因素[J].稀有金属材料与工程,2009,38(3):434-438.YU X F,TIAN S G,LU X D,et al.Directional diffusion and influencing factors of elements during creep of nickel-base single crystal superalloys[J].Rare Metal Materials and Engineering,2009,38(3):434-438.
【22】BLAVETTE D,CARON P,KHAN T.An atom probe investigation of the role of rhenium additions in improving creep resistance of Ni-base superalloys[J].Scripta Metallurgica,1986,20(10):1395-1400.
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