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| The precipitation mechanism of secondary $\eta$ phase in a\par |
| LI Xiuyan;ZHANG Jian;RONG Lijian;LI Yiyi |
| Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110016 |
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Cite this article:
LI Xiuyan; ZHANG Jian; RONG Lijian; LI Yiyi. The precipitation mechanism of secondary $\eta$ phase in a\par. Chin J Mater Res, 2006, 20(2): 113-119.
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Abstract The precipitation mechanisms of $\eta$ phase in a FeNi--based alloy were explored.
It was revealed that $\eta$ phase has a coherent orientation relationship with
$\gamma$ matrix as follows, $\{001\}_{\eta}//\{111\}_{\gamma}$,
$\langle 110\rangle_{\gamma}//\langle 210\rangle_{\eta}$. The precipitation
of $\eta$ phase proceeded by nucleating
at $\gamma^{\prime}$ phase at random grain boundaries through forming stacking fault
layer caused by slip of partial dislocations and by growing in step mode,
which was controlled by the long distance diffusion of atoms. The grain boundary
migrated with
precipitated $\eta$ phase into the neighbor grain which was incoherent
with $\eta$
phase. The solution and disappearing of $\gamma^{\prime}$
was caused by precipitation of $\eta$ phase.\
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Received: 01 January 1900
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1 C.T.Sims,N.S.Stoloff,W.C.Hagel,Superalloy Ⅱ-High Temperature Materials for Aerospace and Industrial Power,(New York,John Wiley & Sons,1987)p.1
2 F.G.Wilson,Effect of Second-Phase Particles on the Mechanical Properties of Steels,(London,Iron and Steel Inst.,1972)p.1
3 U.Franzoni,F.Marchetti,S.Sturlese,Scripta Metallurgica,19(4),511(1985)
4 F.T.Furillo,J.M.Davidson,J.K.TienL,A.Jackman,Materials Science and Engineering,39(2),267(1979)
5 S.B.Kim,K.W.Paik,Y.G.Kim,Materials Science and Engineering,A247,67(1998)
6 GUO Shouren,LU Dezhong,Acta Materialia Sinica,27(12),421(1991)(郭守仁，卢德忠，金属学报，27(12)，421(1991))
7 M.J.Donachie,S.Donachie,Superalloys:A Technical Guide,(Materials Park,OH:ASM Intl.2002)Chapter 3
8 R.H.Jones,Scripta Metallurgica,10(12),1053(1972)
9 A.J.Schwartz,M.Kumar,B.L.Adams,Electron Backscatter Diffraction in Materials Science,(New York,Boston,Dordrecht,London,Moscow,Kluwer Academic/Plenum Publishers,2002)
10 D.A.Porter,K.E.Easterling,Translated by LI Changhai and YU Yongning,Phase Transition in Metal Alloys(Beijing,Metallurgical Industry Press,1988)p.169(D．A．波特，K．E．伊斯特林，李长海，余永宁译，金属和合金中的相变，(冶金工业出版社，1988)p．169)
11 FENG Duan,Metal Physics(Beijing,Science press,2000)p.144(冯端，金属物理学(北京，科学出版社，2000)p．144)
12 C.S.Smith,Trans.Am.Soc.Metals,45,533(1953) |
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