Microstructure and phase transformation in the Al-Cu-Fe alloys of the approximate compositional range of 20 -50 at.% Cu and 2 - 10 Fe at.% have been investigated from samples quenched from their respective temperatures by means of different thermal analysis, magnetothermal analysis, scanning electron microscopy, electron probe analysis and powder X-ray diffraction. Representative phase transformations categorized as polymorphic, discontinuous precipitation,quasi-binary eutectoid, and ternary transitional U-type phase transformation are presented. These phase transformations were found to have a common feature which consumes the β phase and appears the φ phase. A schematic diagram was proposed to demonstrate the transition processes with decreasing temperature.
参考文献
| [1] | Bradley A J;Goldschmidt H J;and 403-418 .An X-ray study of slowly cooled Iron-Copper-Aluminium alloys[J].Journal of the Institute of Metals,1939,62:389. |
| [2] | Prevarskiy A P .Investigation of Fe-Cu-Al alloys[J].Russian Metallurgy,1971,4:154. |
| [3] | Gayle F W;Shapiro A J;Biancanello F S;Bottinger W J .The Al-Cu-Fe phase diagram: 0 to 25 at pct Fe and 50 to 75at Pct Al Equilibria involving the icosahedral phase[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1992,23:2409. |
| [4] | Faudot F .The Al-Cu-Fe phase diagram: Aluminium rich comer and icosahrdral region[J].Annali di Chimica France,1993,18:445. |
| [5] | Zhang L M;Luck R .Phase diagram of the Al-Cu-Fe quasicrystal-forming alloys system Ⅰ-Ⅲ[J].ZEITSCHRIFT FUR METALLKUNDE,2003,94:91-115. |
| [6] | Gayle F W .Phase equilibria at 550 ℃ in Al-Cu-Fe system:50 to 70 at %Al 0 to 9 at % Fe[J].Journal of Phase Equilibria,1992,13:619. |
| [7] | Zhang L M;Luck R .Phase diagram of the Al-Cu-Fe quasicrystal-forming alloys system Ⅳ Formation and stability of -Al10Cu10Fe1 phase[J].ZEITSCHRIFT FUR METALLKUNDE,2003,94:341. |
| [8] | Zhang LM.;Luck R. .Phase boundaries of the phi-Al10Cu10Fe1 phase[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,2004(0):210-213. |
| [9] | Boultif A;Louer D .Indexing of powder diffraction patterns for low-symmetry lattice by successive Dichotomy Method[J].Journal of APPLIED CRYSTALLOGRAPHY,1991,24 |
| [10] | Altomare A et al.EXTRA: a program for extracting structure-factor amplitudes from powder diffraction data[J].Journal of Applied Crystallography,1994,27:435. |
| [11] | Gulay L D;Harbrecht B .The crystal structure of ξ1-Al3Cu4[J].Journal of Alloys and Compounds,2004,367:103. |
| [12] | C. Dong;Q. H. Zhang;D. H. Wang;Y. M. Wang .Al-Cu approximants in the Al_3Cu_4 alloy[J].Zeitschrift fur Physik.B.Condensed Matter,1998(1):25-32. |
| [13] | Manna I;Pabi S K;Gust W .Discontinuous reactions in solid[J].International Materials Reviews,2001,46:53-91. |
| [14] | Dong C .The Al3Ni2 structure as approximant of quasicrystals[J].Journal de Physique,1995,5:1625-1634. |
| [15] | Quiquandon M;Quivy A;Devaud J;Faudot F Lefebvere S Bessiere M Calvayrac Y .Quasicrystal and approximant structures in the Al-Cu-Fe system[J].Journal of Physics:Condensed Matter,1996,8:2487. |
| [16] | Liu W;Schmucker M;Koster U .Quasicrystal and a related CsCl-type crystal in melt-spun Al-Cu-Fe alloys[J].Physica Status Solidi A,1991,124:75. |
| [17] | Zhang L M;Luck R .Phase diagram of the Al-Cu-Fe quasicrystal-forming alloys system V Solidification behavior of Al-Cu-Fe quasicrystals-forming alloys[J].ZEITSCHRIFT FUR METALLKUNDE,2003,94:774. |
| [18] | Grushko B;Wittenberg R;Holland-Moritz D.Solidification of Al-Cu-Fe alloys forming icosahedral phase[J].Journal of Materials Research,1996(11):2177. |
| [19] | Gui J L;Wang J B;Wang R H .On some discrepancies in the literature about the formation of icosahedral quasicrystals in Al-Cu-Fe alloys[J].Journal of Materials Research,2001,16:1037. |
| [20] | Lee SM.;Kim BH.;Kim WT.;Kim DH.;Jeon HJ. .Solidification sequence of the icosahedral quasicrystal forming Al-Cu-Fe alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(0):871-878. |
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