Influence of Deformation on Nanoindentation Size Effect in Nickel Coating

MA Zeng-sheng; LONG Shi-guo; HAN Hai-sheng; PAN Yong; ZHOU Yi-chun

Materials and Mechanical Engineering > 2008 > 32(8): 20-22.

MA Zeng-sheng, LONG Shi-guo, HAN Hai-sheng, PAN Yong, ZHOU Yi-chun. Influence of Deformation on Nanoindentation Size Effect in Nickel Coating[J]. Materials and Mechanical Engineering, 2008, 32(8): 20-22.

Citation:

PDF (616 KB)

Influence of Deformation on Nanoindentation Size Effect in Nickel Coating

More Information

Received Date: January 30, 2008

Graphical Abstract

Abstract

Abstract

To investigate the influence of tensile deformation on the nanoindentation size effect in electrodeposited nickel coating,experiments were conduct by nanoindenter and the results were predicted by two models.Both in as-deposited state and with a tensile strain of 10% nickel coating,the indentation hardness increased as the indentation dimension decreased.The experimental results can be accurately described by GCV model.However the Nix-Gao model can fit the experimental results only when the indentation depths is more than 100 nm.The indentation size effect is more pronounced in coating with tensile strain of 10% than in as-deposited state.
- electrodeposited nickel coating,
- nanoindentation,
- indentation size effect(ISE),
- hardness

FullText(HTML)

References (14)

References

[1]	黄勇力,章莎,赵冠湘,等.用纳米压痕法测量电沉积镍镀层的应力-应变关系[J].湘潭大学自然科学学报,2006,28(2):47-51.
[2]	章莎,黄勇力,赵冠湘,等.纳米压痕法测量电沉积镍镀层的残余应力[J].湘潭大学自然科学学报,2006,28(1):50-53.
[3]	Oliver W C,Pharr G M.An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments[J].J Mater Res,1992,7(6):1564-1583.
[4]	Fleck N A,Muller G M,Ashby M F,et al.Strain Gradient Plasticity:Theory and Experiment[J].Acta Metal1 Mater,1994,42:475-487.
[5]	McElhaney K W,Vlassak J J,Nix W D.Determination of Indenter Tip Geometry and Indentation Contact Area for Depth Sensing Indentation Experiments[J].J Mater Res,1998,13:1300-1306.
[6]	Gerberich W W,Tymiak N I,Grunlan J C,et al.Interpretations of Indentation Size Effects[J].J Appl Mech,2002,69(4):433-442.
[7]	Kim J Y,Kang S K,Lee J J,Jang J,et al.Influence of surface-roughness on indentation size effect[J].Acta Mater,2007,55(10):3555-3562.
[8]	Li H,Ghosh A,Han Y N,et al.Frictional component of the indentation size effect in low load microhardness testing[J].J Mater Res,1993,8(5):1028-1032.
[9]	Nix W D,Gao H.Indentation size effects in crystalline materials:a law for strain gradient plasticity[J].J Mech Phys Sol,1998,46(3):411-425.
[10]	Taylor G I.The mechanism of plastic deformation of crystals.Part I.-Theoretical[J].Proc Roy Soc London A,1934,145:362-387.
[11]	Gra a S,Colao R,Vilar R.Indentation size effect in nickel and cobalt laser clad coatings[J].Surface and Coating Technology,2007,202(3):538-548.
[12]	孙增君.选择合适的镀镍液处理方法[J].电镀与涂饰,1995,14(4):51-52.
[13]	Chen J S,Duh J G.Indentation behavior and Youngs modulus evaluation in elestroless Ni modified CrN coating on mild steel[J].Surface and Coating Technology,2001,139:6-13.
[14]	J ger I L.Surface free energy-a possible source of error in nanohardness[J].Surf Sci,2004,565(2):173-179.

Cited By

Get Citation

PDF

XML

Article views (4) PDF downloads (0)

Turn off MathJax

Article Contents

Abstract

References

Influence of Deformation on Nanoindentation Size Effect in Nickel Coating

Abstract

References

Catalog

Export File

Citation

Format

Content