相平衡分析在Nb-Si基高温合金制备中应用

材料热处理学报, 2011, 32(2): 157-161.

相平衡分析在Nb-Si基高温合金制备中应用

耿太 ^1, , 李长荣 ^2, , 郭翠萍 ^3, , 杜振民 ^4, , 刘妙 ^5, , 赵新青 ^6,

1.北京科技大学材料科学与工程学院,北京,100083

2.北京科技大学材料科学与工程学院,北京,100083

3.北京科技大学材料科学与工程学院,北京,100083

4.北京科技大学材料科学与工程学院,北京,100083

5.北京科技大学材料科学与工程学院,北京,100083;中国人民解放军防化指挥工程学院,北京,102205

6.北京航空航天大学材料科学与工程学院,北京,100191

基金项目: 国家自然科学基金(50671009;50731002) 教育部博士基金(20060008015)

关键词： Nb-Si基高温合金 , 相平衡分析 , 凝固过程模拟 , 显微组织控制

Application of phase equilibrium analysis in prepartion of Nb-Si based ultra-high temperature alloys

在相平衡热力学计算的基础上,利用Scheil-Guilliver模型,计算了Nb-Si-Mo三元体系中不同成分合金的凝固途径.同时,根据Nb-Si-M(M=Ti、Mo、W、Al、Cr、B、Hf)三元系富Nb-M边的液相面投影图及相平衡关系,分析了各合金元素对Nb3Si相的稳定能力,以及对Nbss+Nb5Si3双相区的影响.计算结果与对应合金的显微组织分析相一致,表明相平衡分析有利于设计合金成分、模拟凝固过程、控制合金组织,对于Nb-Si基高温合金的设计与制备具有重要的指导意义.

参考文献

[1]	B.P. Bewlay;M.R. Jackson;J.-C. Zhao;P. R. Subramanian;M.G. Mendiratta;J.J. Lewandowski .Ultrahigh-Temperature Nb-Silicide-Based Composites[J].MRS bulletin,2003(9):646-653.
[2]	Bwelay B P;Jackson M R;Zhao J C .A review of very high temperature Nb silicide-based composites[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2003,34(10):2043-2052.
[3]	Radhakrishnan R;Bhanduri S;Henagerjr C H .The reactive processing of silicides[J].JOM-Journal of the Minerals Metals and Materials Society,1997,49(01):41-45.
[4]	Nekkanti R M;Dimiduk D M.Ductil-phase toughening in niobium-niobium silicide powder processed composites[A].MRS,Pittsburgh,P A,1990:175.
[5]	Subramanian P R;Mendiratta M G;Dimiduk D M et al.Advanced intermetallic alloys-beyond gamma titanium aluminides[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,1997,239-240:1-13.
[6]	P.R.Subramanian;M.G.Mendiratta .The Development of Nb-Based Advanced Intermetallic Alloys for Structural Applications[J].JOM,1996(1):33-38.
[7]	Menon E S K;Mendiratta M G;Dimiduk D M.Niobium Science and Technology[A].Bridgeville,PA,2001:121-145.
[8]	Bewlay B P;Jackson M R;Gigliotti M F X.Niobium silicide high temperature in-situ composites[A].London,2002:541-560.
[9]	B. P. Bewlay;M. R. Jackson;P. R. Subramanian .Processing high-temperature refractory-metal silicide in-situ composites[J].JOM,1999(4):32-36.
[10]	李伟,杨海波,单爱党,吴建生.Mo对于Nb/Nb5Si3原位复合材料室温韧性的影响[J].材料工程,2004(04):31-33,48.
[11]	Mendiratta M G;Lewandowski J J;Dimduk D M .Strength and ductile-phase toughening in the two-phase Nb/Nb5 Si3 alloys[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1991,22(07):1573-1583.
[12]	Tai Geng;Changrong Li;Xinqing Zhao .Experimental study on the as-cast solidification of the Si-rich alloys of the Nb-Si-Mo ternary system[J].Intermetallics,2010(5):1007-1015.
[13]	Chao -Li Ma;Yi Tan .Phase Equilibria in Nb-Mo-Rich Zone of the Nb-Si-Mo Ternary System[J].Materials transactions,2000(10):1329-1336.
[14]	Bewlay B P;Jackson M R;Lipsitt H A .The Nb-Ti-Si ternary phase diagram:evaluation of liquid-solid phase equilibria in Nb-and Ti-rich alloys[J].Journal OF PHASE EQUILIBRIA AND DIFFUSION,1997,18(03):264-278.
[15]	Ma C L;Tan Y;Kasama A et al.Phase equilbria in Nb-W-rich zone of the Nb-W-Si ternary system[J].Materials Transactions,2002,43(04):668-693.
[16]	Dario Moreira P. Junior;Carlos Angelo Nunes;Gilberto Carvalho Coelho .Liquidus projection of the Nb-Si-B system in the Nb-rich region[J].Intermetallics,2003(3):251-255.
[17]	B.P. Bewlay;Y. Yang;R.L. Casey .Experimental study of the liquid-solid phase equilibria at the metal-rich region of the Nb-Cr-Si system[J].Intermetallics,2009(3):120-127.
[18]	G. Shao .Thermodynamic assessment of the Nb-Si-Al system[J].Intermetallics,2004(6):655-664.
[19]	Y. Yang;Y.A. Chang;J.-C. Zhao .Thermodynamic modeling of the Nb-Hf-Si ternary system[J].Intermetallics,2003(5):407-415.
[20]	Won-Yong Kim;Hisao Tanaka;Shuji Hanada .Microstructure and high temperature strength at 1773K of Nb_(ss)/Nb_5Si_3 composites alloyed with molybdenum[J].Intermetallics,2002(6):625-634.
[21]	K. Zelenitsas;P. Tsakiropoulos .Study of the role of Ta and Cr additions in the microstracture of Nb-Ti-Si-Al in situ composites[J].Intermetallics,2006(6):639-659.
[22]	K. Zelenitsas;P. Tsakiropoulos .Study of the role of Al and Cr additions in the microstracture of Nb-Ti-Si in situ composites[J].Intermetallics,2005(10):1079-1095.
[23]	Shiyu Qu;Yafang Han;Liguo Song .Effects of alloying elements on phase stability in Nb-Si system intermetallics materials[J].Intermetallics,2007(5/6):810-813.
[24]	Chen Y;Shang JX;Zhang Y .Bonding characteristics and site occupancies of alloying elements in different Nb5Si3 phases from first principles[J].Physical review, B. Condensed matter and materials physics,2007(18):184204-1-184204-8-0.
[25]	Jie Geng;Panos Tsakiropoulos;Guosheng Shao .Oxidation of Nb-Si-Cr-Al in situ composites with Mo, Ti and Hf additions[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):26-38.
[26]	宋立国,曲士昱,宋尽霞,李树索,宫声凯,韩雅芳.1250℃热处理对Nb-16Si-24Ti-6Cr-6Al-2Hf合金的组织影响[J].材料工程,2005(12):30-32,36.
[27]	YANG Ying,B.P. Bewlay,CHEN Shuang-lin,Y.A. Chang.Application of phase diagram calculations to development of new ultra-high temperature structural materials[J].中国有色金属学会会刊（英文版）,2007(06):1396-1404.

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