Strengthening and weakening of austenite in the process of hot deformation
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Along with strengthening, weakening by the mechanism of dynamic recovery and dynamic recrystallization occurs in the process of deformation of low-carbon steel under the experimental conditions used.
With lowering of the deformation temperature the degree of deformation corresponding to maximum strengthening increases.
The stability of strengthening decreases with increasing deformation. The structure strengthened to different degrees obtained by dynamic recrystallization has the lowest resistance.
The condition of austenite before deformation has a substantial effect on the initial stage of strain hardening. Refining of austenite grains and creation of the initial substructure strengthen the effect of hot strain hardening.
KeywordsAustenite Recrystallization Strain Hardening Substantial Effect Lower Resistance
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- 1.K. F. Starodubov et al., Thermal Hardening of Rolled Products [in Russian], Metallurgiya, Moscow (1970).Google Scholar
- 2.P. V. Reshed'ko et al., "Method of investigating recrystallization processes during HTMT in the modernized IMASh5S-65 apparatus," in: Structure and Structural Strength of Steel [in Russian], NETI, Novosibirsk (1974), p. 98.Google Scholar
- 3.R. Djaic and J. Jonas, Met. Trans.,4, No. 2, 621 (1972).Google Scholar
- 4.M. L. Bernshtein, "Hot plastic deformation and mechanism of strengthening steel during thermomechanical treatment," Stal', No. 2, 157 (1972).Google Scholar
- 5.J. Jonas, C. Sellars, and W. Tegart, Metall. Rev.,130, 1 (1969).Google Scholar
- 6.L. B. Tikhomirova et al., "Strengthening in steel 20 under various conditions of hot deformation," in: Latest Methods of Treating Metals [in Russian], NETI, Novosibirsk (1977), p. 100.Google Scholar