采用铜模造制备直径为3 mm的Mg70-xZn25Ca5Cux(x=1,2,3.5,5)系列合金.分别采用扫描电镜(SEM)、X射线衍射仪(XRO)、力学性能试验装置研究合金的显微组织、相组成和铸态样品的压缩性能,并对断日形貌进行分析.结果表明:Mg69Zn25Ca5Cu1可以形成直径为3 mm的非晶合金,其强度和塑性应变分别为690 MPa和1.7%.与Mg-Zn-Ca合金相比,其非晶形成能力和塑性应变均有提高.同时这也是目前在直径大于2 mm的Mg基非晶合金中所发现的最大塑性应变量.
参考文献
| [1] | INOUE A;NAKAMURA T;NISHIYAMA N;MASUMOTO T .Mg-Cu-Y bulk amorphous alloys with high tensile strength produced by a high-pressure die casting method[J].Materials Transactions-Japan Institute of Metals,1992,33(10):937-945. |
| [2] | Ma H;Zheng Q;Xu J;Li Y;Ma E .Doubling the critical size for bulk metallic glass formation in the Mg-Cu-Y ternary system[J].Journal of Materials Research,2005(9):2252-2255. |
| [3] | Men H.;Kim DH. .Fabrication of ternary Mg-Cu-Gd bulk metallic glass with high glass-forming ability under air atmosphere[J].Journal of Materials Research,2003(7):1502-1504. |
| [4] | Xi XK;Wang RJ;Zhao DQ;Pan MX;Wang WH .Glass-forming Mg-Cu-RE (RE = Gd, Pr, Nd, Tb, Y, and Dy) alloys with strong oxygen resistance in manufacturability[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(3):105-109. |
| [5] | LI Y;NG S C;ONG C K .New amorphous alloys with high strength and good ductility in the Mg-Ni-Nd system[J].Journal of Materials Processing Technology,1995,48:489-493. |
| [6] | Gu X;Shiflet GJ;Guo FQ;Poon SJ .Mg-Ca-Zn bulk metallic glasses with high strength and significant ductility[J].Journal of Materials Research,2005(8):1935-1938. |
| [7] | Qing-Feng Li;Hui-Ru Weng;Zhong-Yuan Suo .Microstructure and mechanical properties of bulk Mg-Zn-Ca amorphous alloys and amorphous matrix composites[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):301-308. |
| [8] | Ma H;Shi LL;Xu J;Li Y;Ma E .Discovering inch-diameter metallic glasses in three-dimensional composition space[J].Applied physics letters,2005(18):1915-1-1915-3-0. |
| [9] | H. Men;Z. Q. Hu;J. Xu .Bulk metallic glass formation in the Mg-Cu-Zn-Y system[J].Scripta materialia,2002(10):699-703. |
| [10] | Y.L REN;J.H. ZUO;K.Q. QIU .Eutectic structure and bulk glass formation in Mg-based alloys[J].Intermetallics,2004(10/11):1205-1209. |
| [11] | 翁慧茹,任英磊,刘云秋,邱克强.超高强度铸造镁合金的研究[J].特种铸造及有色合金,2008(01):71-73. |
| [12] | 张青绒,李金山,王一川,寇宏超,胡锐,周廉,傅恒志.Ni对Mg-Cu-Tb非晶合金形成及力学性能的影响[J].中国有色金属学报,2007(02):303-307. |
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