采用“随机法”构建了考虑WC-Co硬质合金的Co相体积分数、晶粒平均粒径分布、晶粒形心分布以及晶粒取向角分布的微观结构模型,结合显微压痕实验的有限元模拟,提出一种基于材料微观结构的硬度预报模型.结果表明:“随机法”构建的微观结构模型较好地反映了材料的真实细观结构特征;材料的硬度受微观结构的影响较大,其中以Co相体积分数和晶粒平均粒径分布最为显著.模拟结果与实验结果吻合较好,从而证明了提出的模型能够准确地预报WC-Co硬质合金的硬度.
参考文献
| [1] | 任淮辉,李旭东.二维材料微结构设计与数值模拟软件系统[J].计算机辅助设计与图形学学报,2009(06):861-868. |
| [2] | 刘玉佳,燕瑛,苏玲.双随机分布细观分析模型与复合材料性能预报[J].复合材料学报,2011(02):206-210. |
| [3] | 杨晓东,贺鹏飞,吴艾辉,郑百林.石墨烯纳米压痕实验的分子动力学模拟[J].中国科学G辑,2010(03):353-360. |
| [4] | Sadowski T;Nowicki T .Numerical investigation of local mechanical properties of WC/Co composite[J].Computational Materials Science,2008(1):235-241. |
| [5] | 卜晓兵,李落星,张立强,朱必武,王水平.Al-Cu合金凝固微观组织的三维模拟及优化[J].中国有色金属学报,2011(09):2195-2201. |
| [6] | Bertolino G;Bilger N;Crepin J .Modeling microstructures and microstructural effects on macroscopic and intragranular mechanical behavior[J].Computational Materials Science,2007(3):408-416. |
| [7] | LEE H C;GURLAND J .Hardness and deformation of cemented tungsten carbide[J].Material Science and Engineering,1978,33(01):125-133. |
| [8] | Z.-H. Xu;J. Agren .A modified hardness model for WC-Co cemented carbides[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):262-268. |
| [9] | B. Roebuck .Extrapolating hardness-structure property maps in WC/Co hardmetals[J].International Journal of Refractory Metals & Hard Materials,2006(1/2):101-108. |
| [10] | FERREIRA J A M;PINA AMARAL M A;ANTUNES F V et al.A study on the mechanical behavior of WC/Co hardmetals[J].International Journal of Refractory Metals & Hard Materials,2009,27(01):1-8. |
| [11] | RONALD W A .The hardness and strength properties of WC-Co composites[J].Materials,2011,4(07):1287-1308. |
| [12] | DOERNER M F;NIX W D .A method for interpreting the data from depth-sensing indentation instruments[J].Journal of Materials Research,1986,1(04):601-609. |
| [13] | OLIVER W C;PHARR G M .An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments[J].Journal of Materials Research,1992,7(06):1564-1583. |
| [14] | PRAMANIK A;ARSECULARATNE J A;ZHANG L C.Micro-indentation of metal matrix composites:a 3D finite element analysis[A].Brisbane:Engineers Australia,2007:246-251. |
| [15] | CULHA O;TOPARLI M;AKSOY T et al.Calculation of the mechanical properties of FeB layer's by finite element method[J].Mathematical and Computation Applications,2011,16(01):113-124. |
| [16] | Kumar MVR;Narasimhan R .Analysis of spherical indentation of linear viscoelastic materials[J].Current Science: A Fortnightly Journal of Research,2004(8):1088-1095. |
| [17] | SILVA DIAS A M;MODENESI P J;GODOY G C .Computer simulation of stress distribution during Vickers hardness testing of WC-6Co[J].Materials Research,2006,9(01):73-76. |
| [18] | Cha, SI;Lee, KH;Ryu, HJ;Hong, SH .Analytical modeling to calculate the hardness of ultra-fine WC-Co cemented carbides[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):234-244. |
| [19] | SHARMA K;BHASIN V;GHOSH A K .Property estimation with automated ball indentation using artificial neural network and finite element simulation[J].Jordan Journal of Mechanical and Industrial Engineering,2010,4(04):503-506. |
| [20] | Tvergaard, V.;Needleman, A. .Polymer indentation: Numerical analysis and comparison with a spherical cavity model[J].Journal of the Mechanics and Physics of Solids,2011(9):1669-1684. |
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