Hostname: page-component-848d4c4894-wg55d Total loading time: 0 Render date: 2024-05-21T01:36:14.028Z Has data issue: false hasContentIssue false
  • English
  • Français

Separation of the Macro- and Micro-Stresses in Plastically Deformed 1080 Steel

Published online by Cambridge University Press:  06 March 2019

R. A. Winholtz  and
J.B. Cohen
R. A. Winholtz
Affiliation:
Department of Materials Science and Engineering The Technological Institute Northwestern University Evanston, IL 60208
J.B. Cohen
Affiliation:
Department of Materials Science and Engineering The Technological Institute Northwestern University Evanston, IL 60208
Get access

Abstract

The stress tensors were measured with x-ray diffraction in both the ferrite and cementite phases of a 1080 steel specimen deformed in uniaxial tension. The macro- and micro-stresses were separated for all the components of the stress tensors. All the components except the hydrostatic components of the micro-stresses could be determined without an accurate value of the unstressed lattice parameter. Tensile stresses were found in the cementite and compressive stresses in the ferrite along the deformation direction. The tensile stresses in the cementite were quite large.

Type
VII. X-Ray Stress Analysis
Information
Advances in X-Ray Analysis , Volume 32: Thirty-Seventh Annual Conference on Applications of X-ray Analysis, August 1-5, 1988 , 1988 , pp. 341 - 353
Copyright
Copyright © International Centre for Diffraction Data 1988

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. Wilson, D.V. and Konnan, Y.A., Work hardening in a steel containing a coarse dispersion of cementite particles, Acta Met. 12:617 (1964).Google Scholar
2. Hanabusa, T., Fukura, J., and Fujiwara, H., X-ray stress mcasurement on the cementite phase in steels, Bull. JSME 12:931 (1969).Google Scholar
3. Noyau, I.C., Equilibrium conditions for the average stresses measnred by x-rays, Met. Trans. A 14A:l907 (1983).Google Scholar
4. Noyan, I.C. and Cohen, J.B., An x-ray diffraction study of the residual stress-strain distributions in shot-peened two-phase brass, Mat. Sci. Engr. 75:179 (1985).Google Scholar
5. Noyan, I.C., Determination of the usnstressed latlice parameter “ao” for (triaxial) residual stress determination by x-rays, Adv. X-Ray Anal. 28:281 (1985).Google Scholar
6. Cohen, J.B., The measurement of stresses in composites, Powder Diffraction 1:15 (1986).Google Scholar
7. Dölle, H., The influence of multiaxial stress states, stress gradients and elastic anisotropy of the evaluation of (residual) stresses by x-rays, J. Appl. Cryst. 12:489(1979).Google Scholar
8. Winholtz, R.A. and Cohen, J.B., A generalised least-squares determination of triaxial stress states by x-ray diffraction and the associated errors, Aust. J. Fhysics. in press.Google Scholar
9. Lipson, H. and. Petch, N.J., The crystal structure of cementite, Fe3C, J. Iron Steel Inst. 142:95 (1940).Google Scholar
10. Noyan, I.C. and Cohen, J.B., “Residual Stress: Measurement by Diffraction and Interpretation,” Springer-Verlag, New York (1987).Google Scholar
11. Wertheim, G.K., Butler, M.A., West, K.W., and E, D.N.. Buchanan, Determination of the Gaussian and Lorentzian content of experimental line shapes, Rev, Sci. Instrum. 45:1369 (1974).Google Scholar
12. Schwarte, L.H. and Cohen, J.B., “Diffraction from Materials,” Springer-Verlag, New York (1987).Google Scholar
13. Dolle, H. and Cohen, J.B., Residual stresses in ground steels, Met. Trans. A, 11 A:159 (1979).Google Scholar