A series of dysprosium-based ternary, quadruple, and quintuple bulk metallic glasses (BMGs) based on Dy-Al binary eutectic compo-sition were obtained with the partial substitution of Co, Gd, and Ni elements, for dysprosium. The results showed that the Dy31Gd25Co20Al24 alloy, which had the best glass forming ability (GFA), could be cast into an amorphous rod with a diameter of 5 mm. The GFA of alloys was evaluated on the basis of the supercooled liquid region width, γ parameter, the formation enthalpy, and the equivalent electronegativity difference of amor-phous alloys. It was found that the eutectic composition was closely correlated with the GFA of the Dy-based BMGs.
参考文献
| [1] | Greer AL .METALLIC GLASSES [Review][J].Science,1995(5206):1947-1953. |
| [2] | Inoue A .Stabilization of metallic supercooled liquid and bulk amorphous alloys[J].Acta Materialia,2000,48:279. |
| [3] | Johnson W L .Bulk glass-forming metallic alloys:Science and technology[J].MRS Bulletin,1999,24:42. |
| [4] | He Y;Price C E;POOh S J;Shiflet G J .Formation of bulk metallic glasses in neodymium-based alloys[J].Philosophical Magazine Letters,1994,70:371. |
| [5] | Zhao Z F;Zhang Z;Wen P;Pan M X Zhao D Q Zhang Z Wang W H .A highly glass-forming alloy with low glass transition temperature[J].Applied Physics Letters,2003,82:4699. |
| [6] | Zhang Z;Xia L;Wang R J;Wei B C Pan M X Wang W H .Structural evolution and property changes in Nd60Al10Fe20Co10 bulk metallic glass during crystallization[J].Applied Physics Letters,2002,81:4371. |
| [7] | Schneider S;Bracchi A;Samwer K;Samwer K Seibt M Thiyagarajan P .Microstructure controlled magnetic properties of the bulk glass-forming alloy Nd60Fe30Al10[J].Applied Physics Letters,2002,80:1749. |
| [8] | Guo F G;Pooh S J;Shiflet G J .Metallic glass ingots based on yttrium[J].Applied Physics Letters,2003,83:2575. |
| [9] | Li S;Wang R J;Pan M X;Zhao D Q Wang W H .Bulk metallic glasses based on heavy rare earth dysprosium[J].Scripta Materialia,2005,53:1489. |
| [10] | Highmore R J;Greer A L .Eutectics and the formation of amorphous alloys[J].Nature,1989,339:6223. |
| [11] | Tumbull D .Under what conditions can a glass be formed[J].Contemporary Physics,1969,10(05):473. |
| [12] | Clement W;Willens R H;Duwez P .Non-crystalline structure in solidified gold-silicon alloys[J].Nature,1960,187:869. |
| [13] | Peker A;Johnson W L .A highly processable metallic glass:Zr41.2Ti13.8Cu12.5Ni10.0Be22.5[J].Applied Physics Letters,1993,63:2342. |
| [14] | Ma D;Cao H;Chang Y A .Identifying bulk metallic glassformers from multi-component eutectics[J].INTERMETALLICS,2007,15:1122. |
| [15] | Lu Z P;Liu C T .A new glass-forming ability criterion for bulk metallic glasses[J].Acta Materialia,2002,50:3501. |
| [16] | Bakker H.Enthalpies in alloys:Miedema's Semi-Empirical Model[M].Zurich:Trans.Tech.Publications Ltd,1998 |
| [17] | Fang SS.;Xiao X.;Lei X.;Li WH.;Dong YD. .Relationship between the widths of supercooled liquid regions and bond parameters of Mg-based bulk metallic glasses[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,2003(1/2):120-125. |
| [18] | Fang S S .Influences of intrinsic factors on vitrification and devitrification of alloy systems[D].Shanghai University.Shanghai,2005. |
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