Hostname: page-component-848d4c4894-nmvwc Total loading time: 0 Render date: 2024-06-20T11:39:19.228Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanical Characterization of Functionally Graded Materials with a Yield Strength Gradient

Published online by Cambridge University Press:  17 March 2011

A. Nayebi ,
G. Mauvoisin ,
O. Bartier  and
R. El Abdi
A. Nayebi
Affiliation:
University of Rennes Applied Mechanics Research Laboratory I.U.T. de Rennes. 3, rue du Clos Courtel - B.P. 90422 35704 Rennes Cedex 7, France
G. Mauvoisin
Affiliation:
University of Rennes Applied Mechanics Research Laboratory I.U.T. de Rennes. 3, rue du Clos Courtel - B.P. 90422 35704 Rennes Cedex 7, France
O. Bartier
Affiliation:
University of Rennes Applied Mechanics Research Laboratory I.U.T. de Rennes. 3, rue du Clos Courtel - B.P. 90422 35704 Rennes Cedex 7, France
R. El Abdi
Affiliation:
University of Rennes Applied Mechanics Research Laboratory I.U.T. de Rennes. 3, rue du Clos Courtel - B.P. 90422 35704 Rennes Cedex 7, France
Get access

Abstract

An elasto-plastic spherical indentation study on materials with a yield strength gradient, like steels which have undergone thermal hardening such as nitriding, is carried out using both experimental and finite element methods. A theory based on the evolution of hardness, is proposed to determine the yield stress and hardness profiles for materials with a decreasing yield stress with depth.

Results for carbo-nitriding steels obtained by the standard Vickers micro hardness technique are compared with those obtained by the proposed method.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 697: Symposium P – Surface Engineering 2001--Fundamentals and Applications , January 2001 , P1.7
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Millard, A., Castem 2000, Guide de développement. Rapport D.E.M.T./92 300, C.E.A. (1992).Google Scholar
2. Giannakopoulos, A.E, ASME J. Appl. Mech. 64, 853 (1997).Google Scholar
3. Kral, E. R., Komvopoulos, K. and Bogy, D.B., ASME J. of Appl. Mech, 62, 20 (1995).Google Scholar
4. Nakamura, T., Wang, T. and Sampath, S., Act. Materi., 48 (17), 4293 (2000).Google Scholar
5. Bartier, O., Nayebi, A., Mauvoisin, G. and Abdi, R. El, Surface Treatment 2001, 20-22 June, Seville, Spain.Google Scholar
6. Bhattacharya, A. K. and Nix, W. D., Int. J. of Sol. & Str., 24 (12), 1287 (1988).Google Scholar
7. Tirupataiah, Y. and Sundararajan, G., Metallur. Trans. A., 22 A, 2375 (1991).Google Scholar
8. Johnson, K.L., Contact Mechanics. (Cambridge University Press, Cambridge, 1985), P.159.Google Scholar
9. Tabor, D., Rev. of Phys. Tech., 1 (3), 145 (1970).Google Scholar
10. Nayebi, A., Abdi, R. El, Bartier, O. and Mauvoisin, G., To be published in Mat. Sci. & Eng. A.Google Scholar