X-ray diffraction peak profile analysis of maraged Fe-Ni-Mn steels

Document Type : Research note


Faculty of Materials Engineering, Sahand University of Technology, P.O. Box 51335-1996, Tabriz, Iran


X-ray diffraction peak profile analysis was used to identify changes in the lattice distortions during isothermal aging of Fe-10Ni-7Mn (wt. %) maraging steel. Integral peak breadths were analyzed using classical Williamson-Hall equation taking the elastic anisotropy into account. It was found that substantial lattice distortions rise during precipitation hardening which depend strongly on the specific Young’s modulus of a given crystallographic direction. After normalizing by elastic stiffness, the magnitude of average lattice distortions increased reasonably in accordance with age hardening.


[1] G.P. Miller and W.I. Mitchell: J. Iron Steel Inst., 203(1965), 899.
[2] W. Sha: Scripta Mater., 42(2000), 2653.
[3] S. Mahadevan and T. Jayakumar: Metall. And Mater. Trans. A, 39(2008), 1978.
[4] J.D. Kamminga and L.J. Seijble: J. Res. Natl. Inst. Stand. Technol., 109(2004), 65.
[5] B.E. Warren: X-ray diffraction, Addison-Wesley publishing company, (1969), 125.
[6] G.K. Williamson and R.E. Smallman: Acta-Cryst.,7(1954), 574.
[7] Y. Zhong, F. Yin, T. Sakaguchi, K. Nagai and K. Yang: Acta. Mater., 55(2007), 2747.
[8] G.K. Williamson and W.H. Hall: Acta Metall., 22 (1953), 22.
[9] S. Hossein Nedjad and M.R. Movaghar Gharabagh: Int. J. Mater. Res. (formerly Z. Metallk.), 99(2008), 1248.
[10] R.I. Garrod and J.H. Auld: Acta Metall., 3(1955), 190.
[11] T. Suzuki: Trans. JIM, 11(1970), 257.
[12] M. Yodogawa: Trans. JIM, 17(1976), 799.
[13] V.M. Kardonskii and M.D. Perkas: Metals Sci.Heat Treat., 4(1966), 254.
[14] J. Singh and C.M. Wayman: Mater. Sci. Eng., 94(1987), 233.