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Influence of homogenization on the processing map for hot working of as-cast Mg–2Zn–1Mn alloy

  • O. Sivakesavam EMAIL logo and Y. V. R. K. Prasad
Published/Copyright: February 5, 2022

Abstract

Processing maps have been developed for hot deformation of Mg–2Zn– 1Mn alloy in as-cast condition and after homogenization with a view to evaluate the influence of homogenization. Hot compression data in the temperature range 300 – 500 °C and strain rate range 0.001 – 100 s– 1 were used for generating the processing map. In the map for the as-cast alloy the domain of dynamic recrystallization occurring at 450 °C and 0.1 s–1 has merged with another domain occurring at 500 °C and 0.001 s– 1 representing grain boundary cracking. The latter domain is eliminated by homogenization and the dynamic recrystallization domain expanded with a higher peak efficiency occurring at 500 °C and 0.05 s–1. The flow localization occurring at strain rates higher than 5 s–1 is unaffected by homogenization.


Dr. O. Sivakesavam Defence Metallurgical Research Laboratory Kanchanbagh (PO) Hyderabad – 500 058. A.P., India Tel.: + 91 40 2434 5865 Fax: + 91 40 2434 5865/2434 1439/2434 0683

  1. One of the authors (Dr. O. Sivakesavam) is thankful to Dr. D. Banerjee, Director, Defence Metallurgical Research Laboratory, Hyderabad, India for permission to publish this paper.

References

[1] J.K. Chakravarthy, Y.V.R.K. Prasad, M.K. Asundi: Metall. Trans. A 22 (1991) 829.10.1007/BF02658992Search in Google Scholar

[2] J.K. Chakravarthy, Y.V.R.K. Prasad, M.K. Asundi: Zirconium in the Nuclear Industry: 9th Int. Symposium, ASTM-STP 1132, ASTM, Pensylvania (1992) 48.10.1520/STP25498SSearch in Google Scholar

[3] D. Padmavardhani, Y.V.R.K. Prasad: Metall. Trans. A 22 (1991) 2985.10.1007/BF02650258Search in Google Scholar

[4] D. Padmavardhani, Y.V.R.K. Prasad: Metall. Trans. A 22 (1991), 2993.10.1007/BF02650259Search in Google Scholar

[5] N. Srinivasan, Y.V.R.K. Prasad: Mater. Sci. Technol. 8 (1992) 206.10.1179/mst.1992.8.3.206Search in Google Scholar

[6] M.C. Somani, E.S. Bhagiradha Rao, N.C. Birla, M.L. Bhatia, Vakil Singh, Y.V.R.K. Prasad: Metall. Trans. A 23 (1992) 2849.10.1007/BF02651762Search in Google Scholar

[7] B.V. Radhakrishna Bhat, Y.R Mahajan, H.M. Roshan, Y.V.R.K. Prasad: Metall. Trans. A 23 (1992) 2223.10.1007/BF02646015Search in Google Scholar

[8] O. Sivakesavam, I.S. Rao, Y.V.R.K. Prasad: Mater. Sci. Technol. 9 (1993) 805.Search in Google Scholar

[9] O. Sivakesavam, Y.V.R.K. Prasad: Mater. Sci. Eng. A 323 (2002) 270.10.1016/S0921-5093(01)01392-2Search in Google Scholar

[10] O. Sivakesavam, Y.V.R.K. Prasad: Metallkd. 93 (2002) 123.10.3139/146.020123Search in Google Scholar

[11] Y.V.R.K. Prasad, H.L. Gegel, S.M. Doraivelu, J.C. Malas, J.T. Morgan, K.A. Lark, D.R. Barker: Metall. Trans. A 15 (1984) 1883.10.1007/BF02664902Search in Google Scholar

[12] R.Raj: Metall. Trans. A 12 (1981) 1089.10.1007/BF02643490Search in Google Scholar

[13] Y.V.R.K. Prasad: Metall. Mater. Trans. A 27 (1996) 235.10.1007/BF02647765Search in Google Scholar

[14] Y.V.R.K. Prasad, T. Seshacharyulu: Int. Mater. Rev. 43 (1998) 243.10.1179/imr.1998.43.6.243Search in Google Scholar

[15] H Ziegler: Progress in Solid Mechanics, Vol. 4, I.N. Sneddon, R. Hill (Eds.), North Holland, Amsterdam (1963) 93.Search in Google Scholar

[16] A.K.S. Kalyan Kumar, M.Sc. Thesis: Indian Institute of Science, Bangalore (1987).Search in Google Scholar

[17] Y.V.R.K. Prasad: Indian J. Technol. 28 (1990) 435.10.1007/BF03053491Search in Google Scholar

[18] N. Ravichandran, Y.V.R.K. Prasad, Metall.Trans. A 22 (1991) 2339.10.1007/BF02665000Search in Google Scholar

[19] S. Venugopal, S.L. Mannan, Y.V.R.K. Prasad: Metall. Trans. A 23 (1992) 3093.10.1007/BF02646128Search in Google Scholar

[20] D.H. Sastry, Y.V.R.K. Prasad, K.I. Vasu: Scripta Metall. 3 (1969) 927.10.1016/0036-9748(69)90243-9Search in Google Scholar

Received: 2002-11-27
Published Online: 2022-02-05

© 2003 Carl Hanser Verlag, München

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