材料研究学报  2007, Vol. 21 Issue (2): 209-214

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深过冷Ni-Sn合金非规则共晶的形成机制

陈达　 杨根仓　 刘峰　 周尧和

陈达; 杨根仓; 刘峰; 周尧和 . 深过冷Ni-Sn合金非规则共晶的形成机制[J]. 材料研究学报, 2007, 21(2): 209-214.

摘要 参考文献 相关文章 Metrics 全文: PDF(765 KB)   摘要: 采用熔融玻璃净化配合循环过热使Ni-32.5%Sn(质量分数)共晶合金实现了深过冷快速凝固.当过冷度大于某一临界值时,非规则共晶在凝固组织中出现.随着过冷度的提高,最终得到完全的非规则共晶组织.通过分析Ni-Sn共晶合金中各相形核、生长、以及枝晶熔断机制随过冷度的变化,解释了非规则共晶的形成机制.在深过冷条件下熔体中初生相率先形核并长入过冷熔体中,形成枝晶骨架,再辉重熔后次生相从残余熔体中析出并包围初生相,形成非规则共晶. Key words： 收稿日期: 1900-01-01      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 陈达 杨根仓 刘峰 周尧和 44.8K 链接本文: https://www.cjmr.org/CN/Y2007/V21/I2/209 1 S.V.Raj,I.E.Locci,J.D.Whittenberger,in Structural Intermetallics 2001,Development and evalution of directionally-solidified NiAl/(Cr,Mo)-based eutectic alloys for airfoil applications,edited by K.J.Hemker, D.M.Dimiduk,H.Clemens,R.Darolin,H.Inui,J.M.Larsen, V.K.Sikka,M.Thomas,J.D.Whittenberger (Warrendale, PA,TMS,2001) p.785 2 J.D.Whittenberger,I.E.Locci,S.V.Raj,J.A.Salem,Ele- vated temperature strength and room-temperature tough- hess of directionally solidified Ni-33Al-33Cr-1Mo,Metal. Mater.Trans.,33A,1385(2002) 3 W.S.Walston,R.Darolia,in Structural Intermetallics 2001,Properties and application of NiAl Eutectic Al- loys,edited by K.J.Hemker,D.M.Dimiduk,H.Clemens, R.Darolia,H.Inui,J.M.Larsen,V.K.Sikka,M.Thomas, J.D.Whittenberger (Warrendale,PA,TMS,2001) p.735 4 R.Darolia.Ductility and fracturetoughness issues related to implementation of NiAl for gas turbine applications, Intermetallics,8,1321(2000) 5 GUO Jiantiug,CUI Chuanyong,ZHOU Lanzhang,LI Gu- song,Investigation on intermetallic NiA1-Cr(Mo,Hf) al- loys,Acta Metal.Sin.,38,1157(2002) (郭建亭，崔传勇，周兰章，李谷松，金属间化合物NiAl- Cr(Mo,Hf)合金的研究，金属学报，38，1157(2002)) 6 C.Y.Cui,J.T.Guo,Y.H.Qi,H.Q.Ye,Deformation behavior and microstructure of DS NiAl/Cr(Mo) alloy containing Hf,Intermetallics,10,1001(2002) 7 R.S.Polvani,W.S.Tzeng,P.R.Strutt,High temperature creep in semi-coherent NiAl-Ni_2AlTi alloy,Metall. Trans.,7A,33(1976) 8 XIAO Xuan,GUO Jianting,YU Halpeng,Microstructure and mechanical properties of a cast NiAl(Ti)-Cr(Mo) eu- tectic alloy,Acta Metal.Sin.,42(10),1031(2006) (肖旋，郭建亭，于海朋，NiAl(Ti)-Cr(Mo)共晶合金的微观组织和力学性能，金属学报，42(10)，1031(2006)) 9 S.V.Raj,I.E.Locci,Microstructural characterization of a directionally-solidified Ni-33(at.%)Al-31Cr-3Mo eutectic alloy as a function of withdrawal rate,Intermetallics,9, 217(2001) 10 J.D.Whittenberger,S.V.Raj,I.E.Locci,J.A.Salem,Effect of growth rate on elevated temperature plastic flow and room temperature fracture toughness of directionally so- lidified NiAl-31Cr-3Mo,Intermetallies,7,1159(1999) No related articles found! Viewed Full text Abstract Cited   Shared      Discussed