Grain refinement in a cast high Nb containing TiAl alloy by heat treatment

Grain refinement in a cast high Nb containing TiAl alloy by heat treatment

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摘要 The grain refinement of an as-cast Ti-46Al-8.5Nb-0.2W (atom fraction in %)alloy by the cyclic heat treatments was studied. The heat treatment scheme included a tempering at1250℃ and cyclic tempering at 1000 and 1200℃ three times after solution treatment at thetemperature above α phase transus followed by immediate fan cooling. The fine and homogeneousnear-γ microstructure can be obtained by this heat treatment, which causes the breakdown of as-castmicro-structure and prevents the anomalous growing of original γ phase. The grain refinement of an as-cast Ti-46Al-8.5Nb-0.2W (atom fraction in %)alloy by the cyclic heat treatments was studied. The heat treatment scheme included a tempering at1250℃ and cyclic tempering at 1000 and 1200℃ three times after solution treatment at thetemperature above α phase transus followed by immediate fan cooling. The fine and homogeneousnear-γ microstructure can be obtained by this heat treatment, which causes the breakdown of as-castmicro-structure and prevents the anomalous growing of original γ phase.

作者 LIUZicheng LINJunpin WANGYanli LINZhi SONGXiping CHENGuoliang

机构地区 StateKeyLaboratoryforAdvanceMetalsandMaterials

出处《Rare Metals》 SCIE EI CAS CSCD 2004年第3期260-262,共3页 稀有金属（英文版）

基金 This work was financially supported by the State Key Project for Fundamental Research Developing Plan (No. G2000067206-2)

关键词 γ-titanium-aluminide alloys grain refinement heat treatment Ti-46Al-8.5Nb-0.2W alloy microstructure γ-titanium-aluminide alloys grain refinement heat treatment Ti-46Al-8.5Nb-0.2W alloy microstructure

分类号 TG166.5 [金属学及工艺—热处理]

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1[1]Zhang W.J., Chen G.L., and Sun Z.Q., Oxidation of ternary Ti18Nb45Al and Ti10Nb45Al alloys [J],Scripta Metall., 1993, 28: 563.
2[2]Zhang W.J., Chen G.L., and Sun Z.Q., Characteristics of heat resistant alloys Ti10Nb45Al and Ti18Nb45Al [J], Scripta Metall., 1993, 28:1113.
3[3]Huang S.C., Alloying considerations in gamma-based alloys [A], [in] Structural Intermetallics [C], TMS, Warrendale, 1993: 299.
4[4]Paul J.D.H., Appel F., and Wagner R., The compres sion behaviour of niobium alloyed y-titanium alu minides [J], Acta Mater., 1998, 46: 1075.
5[5]Liu Z.C., Lin J.P., Li S.J., and Chen G.L., Effects of Nb and Al on the microstructures and mechanical properties of high Nb containing TiAl base alloys [J], Intermetallics, 2002, 10: 653.
6[6]Zhang W.J., Deevi S.C., and Chen G.L., On the origin of superior high strength of Ti-45Al-10Nb alloys [J], Intermetallics, 2002, 10: 403.
7[7]Chen G.L., Zhang W.J., Liu Z.C., Li S.J., and Kim Y.W., Microstructure and properties of high-Nb con tained TiAl-based alloys [A], [in] Gamma Titanium Aluminides [C], TMS, Warrendale, 1999: 371.
8[8]Zhang X.D., Dean T.A., and Loretto M.H., Phase transformation and structural morphologies of Ti-50Al-2Nb-2Mn during the heat treatment [J], Acta Mater., 1994, 42: 2035.

1XU Qiang,LEI Changhui (BeiJing Laboratory of Electron Microscopy. Chinese Academy of Sciences, P. O. Box 2724.100080 )Beijing, China.ZHANG Yonggang (Department of Materials Science and Engineering, BeiJing University of Aeronautics and Astronautics, 1000.MECHANISMS OF α_2→α_2/γ PHASE TRANSFORMATION IN A TiAL ALLOY[J].Acta Metallurgica Sinica(English Letters),1995,8(Z1):597-602.
2SU Meike ,ZHENG Lijing ,LANG Zebao ,YAN Jie ,ZHANG Hu .Microstructural evolution of a PM TiAl alloy during heat treatment in α+γ phase field[J].Rare Metals,2012,31(5):424-429. 被引量：5
3Fu Sheng Sun, Chunxiao Cao, Yafang Han and Minggao Yan Beijing Institute of Aeronautical Materials, P.O. Box 81, Beijing 100095, China Seung Eon Kim and Yong Tai Lee Korea Institute of Machinery & Materials, 66 Sangnam, Changwon, Kyungnam, Korea.SOLIDIFICATION BEHAVIOR AND MICROSTRUCTURE EVOLUTION OF Si BEARING TiAl ALLOY[J].中国有色金属学会会刊：英文版,1999,9(S1):197-201.
4Senying LIU,Dongliang ZHAO,Rongze HU and Chongyu WANG(Central Iron and Steel Research Institute, Beijing 100081, China)Ping LUO(National Research Center for CRM, Beijing 100013, China).Bonding and Fracture Characteristics at α_2/γ Interface in TiAl Alloy with B Addition[J].Journal of Materials Science & Technology,1999,15(1):43-47.
5朱颖,王国建,李文轶,张茉,康慧,曲平.Influence of filler metal and processing on brazed joints of TiAl alloy and 42CrMo[J].中国有色金属学会会刊：英文版,2005,15(S3):335-338.
6Yu Wang 1) , Dongliang Lin (T.L.Lin) 1) , Yun Lin 1) and Young Won Kim 2) 1) Department of Materials Science, Shanghai Jiao Tong University, Open Laboratory of Education Ministry for High Temperature Materials and Tests, Shanghai.THERMAL ACTIVATION ANALYSIS ON STRAIN RATE DEPENDENCE OF HIGH TEMPERATURE TENSILE PROPERTIES IN TiAl ALLOY[J].中国有色金属学会会刊：英文版,1999,9(S1):285-289. 被引量：1
7Y.G. Zhang, J.G. Lin and C.Q. Chen Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China.ORIENTATION EFFECTS ON CREEP OF A LAMELLARTiAl ALLOY[J].中国有色金属学会会刊：英文版,1999,9(S1):280-284.
8徐西艳.JCS-018机床直流调速系统故障的分析与处理[J].机械,2001,28(3):66-67. 被引量：2
9Gang Wang Lei Xu Yong Wang Zhuo Zheng Yuyou Cui Rui Yang.Processing Maps for Hot Working Behavior of a PM TiAl Alloy[J].Journal of Materials Science & Technology,2011,27(10):893-898. 被引量：3
10杨明波,程亮,潘复生.Comparison of as-cast microstructure,tensile and creep properties for Mg-3Sn-1Ca and Mg-3Sn-2Ca magnesium alloys[J].Transactions of Nonferrous Metals Society of China,2010,20(4):584-589. 被引量：3

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Grain refinement in a cast high Nb containing TiAl alloy by heat treatment

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