针对材料弹性模量仪器化压入识别的两种代表性方法——Ma方法和Oliver-Pharr方法,应用有限元数值模拟,分析了金刚石压头与具有典型加工硬化特性的金属类被测材料之间接触面摩擦系数对弹性模量识别精度的影响,分析结果表明:摩擦系数介于0～0.2范围时,采用两种方法,弹性模量识别精度对摩擦系数的变化较敏感;摩擦系数大于0.2之后,两种方法对摩擦系数变化的敏感性降低,弹性模量的识别精度趋于稳定.对两种方法的测试精度进行比较可以看出,Ma方法测试结果的精度和相对于摩擦系数变化的稳定性均好于OliverPharr方法,仪器化压入实验应使用Ma方法识别材料的弹性模量.两种铝合金材料的实验数据表明,将摩擦系数对测试结果的影响进行修正,可有效提高Oliver-Pharr方法弹性模量的识别精度.
参考文献
| [1] | 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. |
| [2] | W.C. Oliver;G.M. Pharr .Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology[J].Journal of Materials Research,2004(1):3-20. |
| [3] | PHARR G M;CHENG Y T;HUTCHINGS I M et al.Indentation Methods in Advanced Materials Research[J].Journal of Materials Research,2009,24(03):579-580. |
| [4] | D. A. Lucca;K. Herrmann;M. J. Klopfstein .Nanoindentation: Measuring methods and applications[J].CIRP Annals,2010(2):803-819. |
| [5] | 张泰华.微/纳米力学测试技术及其应用[M].北京:机械工业出版社,2004:4-6. |
| [6] | Ma DJ;Ong CW;Zhang TH .An improved energy method for determining Young's modulus by instrumented indentation using a Berkovich tip[J].Journal of Materials Research,2008(8):2106-2115. |
| [7] | Ma, D;Ong, CW;Zhang, T .An Instrumented Indentation Method for Young's Modulus Measurement with Accuracy Estimation[J].Experimental Mechanics,2009(5):719-729. |
| [8] | 马德军.材料力学性能仪器化压入测试原理[M].北京:国防工业出版社,2010:3-39. |
| [9] | 马德军 .仪器化微米压入测试材料杨氏模量的方法[P].中国,200910241216.6,2010-05-19. |
| [10] | 马德军.材料弹性模量的仪器化压入测试方法[J].中国有色金属学报,2010(12):2336-2343. |
| [11] | JOHUSON K L.Contact Mechanics[M].Cambridge:Cambridge University Press,1985:85-105. |
| [12] | 蒋丽梅,肖颖喆,滑广军,何新快.划痕法对金属包装材料涂层/基底体系界面结合性能的研究[J].包装工程,2010(09):60-63. |
| [13] | ABBES F;TROYON M;MEZA J M et al.Finite Element Analysis of the Penetration Depth Tip Radius Ratio Dependence on the Correction Factor β in Instrumented Indentation of Elastic-plastic Materials[J].Journal of Micromechanics and Microengineering,2010,20:1-8. |
| [14] | PELLEETIER H;KRIER J;CORNET et al.Limits of Using Bilinear Stress-strain Curve for Finite Element Modeling of Nanoindentatio Response on Buik Materials[J].Thin Solid Films,2000,379(01):147-155. |
| [15] | M. DAO;N. CHOLLACOOP;K. J. VAN VLIET .COMPUTATIONAL MODELING OF THE FORWARD AND REVERSE PROBLEMS IN INSTRUMENTED SHARP INDENTATION[J].Acta materialia,2001(19):3899-3918. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%