对一种Mg-Gd-Y-Zr合金cast-T6状态板片试样搅拌摩擦焊接后的组织与性能进行了研究.结果表明:Mg-Gd-Y-Zr合金的搅拌摩擦焊的焊核区发生动态再结晶,为等轴细晶,硬度值最高；热机影响区基体组织具有热变形特征,第二相会粗化、溶解,硬度值稍低；热影响区晶粒尺寸与母材相当,第二相粗化,硬度值低于母材.在本工作实验条件下,Cast-T6铸件试样的焊接系数达0.91,且伸长率相对于母材有大幅度提高.断口形貌SEM分析显示,接头断裂模式为韧性断裂.
参考文献
| [1] | 陈影,权高峰,沈长斌,刘书华,葛继平.镁合金焊接方法的研究现状及展望[J].材料导报,2008(z3):346-348. |
| [2] | Norman AF.;Hyde K.;Costello F.;Thompson S.;Birley S.;Prangnell PB. .Examination of the effect of Sc on 2000 and 7000 series aluminium alloy castings: for improvements in fusion welding[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):188-198. |
| [3] | J. F. Tu;A. G. Paleocrassas .Fatigue crack fusion in thin-sheet aluminum alloys AA7075-T6 using low-speed fiber laser welding[J].Journal of Materials Processing Technology,2011(1):95-102. |
| [4] | L. Commin;M. Dumont;J.-E. Masse .Friction stir welding of AZ31 magnesium alloy rolled sheets: Influence of processing parameters[J].Acta materialia,2009(2):326-334. |
| [5] | Wang XH;Wang KS .Microstructure and properties of friction stir butt-welded AZ31 magnesium alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1-2):114-117. |
| [6] | A.H. Feng;Z.Y. Ma .Enhanced mechanical properties of Mg-Al-Zn cast alloy via friction stir processing[J].Scripta materialia,2007(5):397-400. |
| [7] | Xie GM;Ma ZY;Geng L;Chen RS .Microstructural evolution and mechanical properties of friction stir welded Mg-Zn-Y-Zr alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1-2):63-68. |
| [8] | Z.-K. Peng;X.-M. Zhang;J.-M. Chen .Grain refining mechanism in Mg-9Gd-4Y alloys by zirconium[J].Materials Science and Technology: MST: A publication of the Institute of Metals,2005(6):722-726. |
| [9] | 张新明,陈健美,邓运来,肖阳,蒋浩,邓桢桢.Mg-Gd-Y-（Mn, Zr）合金的显微组织和力学性能[J].中国有色金属学报,2006(02):219-227. |
| [10] | Jun Wang;Jian Meng;Deping Zhang .Effect of Y for enhanced age hardening response and mechanical properties of Mg-Gd-Y-Zr alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):78-84. |
| [11] | T. Honma;T. Ohkubo;S. Kamado .Effect of Zn additions on the age-hardening of Mg-2.0Gd-l.2Y-0.2Zr alloys[J].Acta materialia,2007(12):4137-4150. |
| [12] | 张家振,马志新,李德富.预变形对Mg-Gd-Y-Zr合金力学性能的影响[J].稀有金属,2008(04):522-525. |
| [13] | 赵祖德,杨平,路林林,朱世凤,黄少东.Mg-Gd-Y变形镁合金的组织结构与性能[J].材料研究学报,2008(02):141-146. |
| [14] | Z. Yang;J.P. Li;J.X. Zhang;Y.C. Guo;B.W. Wang;F. Xia;M.X. Liang .Effect of homogenization on the hot-deformation ability and dynamic recrystallization of Mg-9Gd-3Y-0.5Zr alloy[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2009(1/2):102-107. |
| [15] | Guo CP;Du ZM;Li CR .A thermodynamic description of the Gd-Mg-Y system[J].Calphad: Computer Coupling of Phase Diagrams and Thermochemistry,2007(1):75-88. |
| [16] | Xinming Zhang;Li Li;Yunlai Deng .Superplasticity and microstructure in Mg-Gd-Y-Zr alloy prepared by extrusion[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):296-300. |
| [17] | Li Li;Yunlai Deng .Superplasticity and microstructure in Mg-Gd-Y-Zr rolled sheet[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):295-299. |
| [18] | Li Li;Xinming Zhang;Changping Tang;Yunlai Deng;Nan Zhou .Mechanical properties and deep drawability of Mg–Gd–Y–Zr alloy rolling sheet at elevated temperatures[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2010(4/5):1266-1274. |
| [19] | 邓运来,杨柳,郭天才,李文瑛,张新明.Mg-Gd-Y-Zr合金在773和823 K热处理时的氧化行为[J].中南大学学报（自然科学版）,2010(02):483-488. |
| [20] | Ming Sun;Guohua Wu;Wei Wang;Wenjiang Ding .Effect of Zr on the microstructure, mechanical properties and corrosion resistanceof Mg-10Gd-3Y magnesium alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2009(1/2):145-151. |
| [21] | L. Gao;R.S. Chen;E.H. Han .Effects of rare-earth elements Gd and Y on the solid solution strengthening of Mg alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):379-384. |
| [22] | Tao Zhang;Xiaolan Liu;Yawei Shao;Guozhe Meng;Fuhui Wang .Electrochemical Noise Analysis On The Pit Corrosion Susceptibility Of Mg-10gd-2y-0.5zr, Az91d Alloy And Pure Magnesium Using Stochastic Model[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2008(12):3500-3507. |
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