Numerical investigation of indentation fatigue on polycrystalline copper

被引：0

作者：

Xu B.X. ^{[1
,2
]}

Yue Z.F. ^{[1
]}

Chen X. ^{[2
]}

机构：

[1] School of Mechanics, Civil Engineering and Architecture, Northwestern Polytechnical University

[2] Columbia Nanomechanics Research Center, Department of Civil Engineering and Engineering Mechanics, Columbia University, New York

来源：

Journal of Materials Research | 2009年 / 24卷 / 3期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金; 美国国家科学基金会;

关键词：

D O I：

10.1557/jmr.2009.0107

中图分类号：

学科分类号：

摘要：

The dynamic indentation response of polycrystalline copper under cyclic fatigue loading is studied with a flat cylindrical indenter. First, a simple analytical model shows that in a purely elastic solid, the indentation depth responds with the same wavelength and frequency as the applied sinusoidal fatigue load. Next, a numerical simulation of an indentation fatigue test on an elastic-plastic solid (polycrystalline copper) is performed. Finite element analyses reveal that the mean indentation depth is controlled by both the mean of the indentation fatigue load and the load amplitude, while the amplitude of the indentation depth is independent of the mean load. Further investigations indicate that with an increased number of cycles, the increment of indentation depth reaches a constant rate. The steady state indentation depth rate is dependent not only on the amplitude of indentation fatigue load but also on the fatigue mean load, which is similar to strain accumulation during a conventional fatigue test. A parallel indentation experiment on annealed polycrystalline copper also confirms the effect of the fatigue mean load, indicating consistency with numerical results. © 2009 Materials Research Society.

引用

页码：1007 / 1015

页数：8

共 37 条

[1]

Oliver W.C., Pharr G.M., Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology, J. Mater. Res, 19, (2004)

[2]

Cheng Y.T., Cheng C.M., Scaling dimensional analysis and indentation measurements, Mater. Sci. Eng., R, 44, (2004)

[3]

Chen X., Ogasawara N., Zhao M., Chiba N., On the uniqueness of measuring elastoplastic properties from indentation: The indistinguishable mystical materials, J. Mech. Phys. Solids, 55, (2007)

[4]

Xia Z.H., Curtin W.A., Sheldon B.W., A new method to evaluate the fracture toughness of thin films, Acta Mater, 52, (2004)

[5]

Chen X., Xiang Y., Vlassak J.J., A novel technique to measure mechanical properties of porous materials by nanoindentation, J. Mater. Res, 21, (2006)

[6]

Mason J.K., Lund A.C., Schuh C.A., Determining the activation energy and volume for the onset of plasticity during nanoindentation, Phys. Rev. B, 73, (2006)

[7]

Gouldstone A., Chollacoop N., Dao M., Li J., Minor A.M., Shen Y.L., Indentation across size scales and disciplines: Recent developments in experimentation and modeling, Acta Mater, 55, (2007)

[8]

Zhao M.H., Chen X., Yan J., Karlsson A.M., Determination of uniaxial residual stress and mechanical properties by instrumented indentation, Acta Mater, 54, (2006)

[9]

Pane I., Blank E., Role of plasticity on indentation behavior: Relations between surface and subsurface responses, Int. J. Solids Struct, 43, (2006)

[10]

Li X.D., Bhushan B., A review of nanoindentation continuous stiffness measurement technique and its applications, Mater. Charact, 48, (2002)

← 1 2 3 4 →