Summary
At strain rates from 10-3 to 102 and temperature above 0.5 Tm, the flow behaviours of various metallic materials are classified into alminum type and copper type. The former has dynamic recovery as a Restoration process and the latter dynamic recrystallization. Copper type materials show smallest in the magnitude of temperature dependence and strain rate sensitivity exponent “m” value. Steady State flow Stress can be expressed as functions of product of strain rate and the reciprocal of the Arrhenius term of temperature dependence, and the values of stress exponent “n” value in it well correlates to the restoration processes of materials. It has been clarified from the observation of deformed microstructure that dynamic recrystallization as restoration process is occured soon after passing of the peak in flow curves. Finally, there has been good correlation between the deformation condition parameter and dynamically recrystallized grain diameters or dynamically recovered ones.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
Ohtakara, Y.; Nakamura, T.; Sakui, S.: Steady state deformation and restoration process in metals and alloys. Trans. Iron Steel Inst. Japan. 12 (1972) 207–216.
Nakamura, T.; Ueki, M.: Dynamic recrystallization in copper and mild steel during high temperature torsional deformation. J. Soc. Mat. Sci. Jap. 23 (1974) 182–188.
Ohtakara, Y.; Nakamura, T.; Sakui, S.: Temperature and strain dependences of flow stress in metals and alloys in torsional deformation. Trans. Iron Steel Inst. Jap. 12 (1972) 36–44.
Sellers, C. M.; Tegart, W. J. McG.: La relation entre la resistance et la structure dans deformation a chaud. Mem. Sci. Rev. 63 (1966) 731–746.
Jonas, J. J.: A comparison of creep and hot working strain rate relationship. Trans. A. S. M. 62 (1969) 300–303.
Jonas, J. J.; Sellers, C. M.; Tegart, W. J. McG.: Strength and structure under hot working conditions. Met. Rev. 14 (1969) 1–24.
Uvira, J. L.; Jonas, J. J.: Hot compression of Armco iron and silicon steel. Trans. Met. Soc. AIME 242 (1968) 1619–1626.
Garofalo, F.: An empirical relation defining the stress dependence of minimum creep rate in metals. Trans. Met. Soc. AIME 227 (1963) 351–356.
Tamura, M.; Kamemura, Y.; Ichinose, H.: Torsion tests of several high alloy steel and flow resistance in hot extrusion. Rep. 123rd Comm. Heat Resist. Metals and Alloys, Japan Soc. Prom. Sci. 18 (1977) 61–71.
Tamura, M.; Kamemura, Y.; Ichinose, H.: Effect of alloying element on the deformation resistance of austenitic stainless steels and Nickel base alloys at high temperature. ibid. 18 (1977) 189–199.
Sakui, S.; Sato, K.: Fundamental studies of hot working of metals 1st Rep.-6th Rep. J. Jap. Inst. Met. 19 (1955) 659–663
663–666
704–707
707–711
20 (1956) 35–39
281–285.
Sakui, S.; Sakai, T.: Deformation Behaviours of a 0.06% Carbon Steel in the Austenite Range. Tetsu-to-Hagane. 63 (1977) 285–293.
Sakui, S.; Sakai, T.: Effects of Strain, Strain Rate, and Temperature on the Hot worked Structure of a 0.06% Carbon Steel in the Austenite Range. Tetsu-to-Hagane 62 (1976) 856–865.
Ueki, M.; Horie, S.; Nakamura, T.: Dynamic Restoration during Hot Deformation of Low Carbon Steels. Tetsu-to-Hagane 63 (1977) S241.
Ohuchi, C.: Hot Deformation Behaviours of Low Carbon Niobium and 1.8% Alminum Steels, Comm. High Temp. Deformation Joint Comm. Iron Steel Basic Res. I.S.I.J. August(1977).
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1979 Springer-Verlag, Berlin/Heidelberg
About this paper
Cite this paper
Nakamura, T. (1979). Steady State Deformation and Dynamic Restoration Processes During High Strain Rate and High Temperature Deformation in Metals and Alloys. In: Kawata, K., Shioiri, J. (eds) High Velocity Deformation of Solids. International Union of Theoretical and Applied Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67208-8_9
Download citation
DOI: https://doi.org/10.1007/978-3-642-67208-8_9
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-67210-1
Online ISBN: 978-3-642-67208-8
eBook Packages: Springer Book Archive