研究了用渗流铸造法制备的钨骨架/Zr基非晶复合材料在1.4×10-2s-1应变率条件下的力学性能与变形断裂特征.试验发现钨骨架/Zr基非晶复合材料在准静态压缩条件下具有很高的压缩强度(3 300～3 500MPa)和良好的塑性变形能力(50%～60%).利用SEM研究压缩后试样的微观组织形貌,发现钨骨架与非晶相的相互嵌套改变了非晶和钨骨架二者各自的变形机理与断裂模式.非晶相阻碍了钨骨架中裂纹的扩展,钨骨架抑制了非晶相中大面积流变的发生.复合材料的断裂表现为一种混合断裂模式,其中非晶相的断裂为局部软化后的撕裂.
参考文献
| [1] | R.D.Conner;R.B.Dandliker;W.L.Johnson .Mechanical properties of tungsten and steel fiber reinforced Zr-41.25Ti_13.75Cu_12.5Ni_10Be_22.5 metallic glass matrix composites[J].Acta materialia,1998(17):6089-6102. |
| [2] | Bae DH;Lee MH;Yi S;Kim DH;Sordelet DJ .Deformation behavior of a Ni59Zr20Ti16Si2Sn3 metallic glass matrix composite reinforced by copper synthesized by warm extrusion of powders[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(1):15-20. |
| [3] | 张海峰,丁炳哲,胡壮麒.块状金属玻璃研究与进展[J].金属学报,2001(11):1131-1141. |
| [4] | Wegner L D;Gibson L J .The mechanical behaviour of interpenetrating phase composites-Ⅰ:Modelling[J].International Journal of Mechanical Sciences,2004,42(05):925-42. |
| [5] | 周伟,胡文彬,张荻.挤压铸造制备三维连续网络结构增强金属基复合材料[J].上海交通大学学报,1999(07):779-782. |
| [6] | Dandliker R B;Conner R D;Johnson W L .Meltinfiltration casting of bulk metal-glass matrix composites[J].Journal of Materials Research,1998,13(10):2896-2901. |
| [7] | Wright Wendelin J;Schwarz Ricardo B;Nix William D .Localized heating during serrated plastic flow in bulk metallic glasses[J].Materials Science and Engineering,2001,A319-321:229-232. |
| [8] | Turnbull D;Cohen M H .Freevolume model of the amorphous phase:glass transition[J].Journal of Chemical Physics,1961,34(01):120-125. |
| [9] | Heggen M;Spaepen F;Feuerbacher M .Creation and annihilation of free volume during homogeneous flow of a metallic glass[J].Journal of Applied Physics,2005(3):3506-1-3506-8-0. |
| [10] | Wang WH;Dong C;Shek CH .Bulk metallic glasses[J].Materials Science & Engineering, R. Reports: A Review Journal,2004(2/3):45-89. |
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