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Information Journal Paper

Title

SUPER PLASTICITY OF γ/α DUPLEX STAINLESS STEELS

Writers

 KOLAHDOOZ A. | DASHTI M.

Pages

 Start Page 37 | End Page 46

Abstract

 In this paper the studies of the two-phase super Plasticity stainless steels is studied. The aim of this study obtained the suitable criteria to thermo-mechanical treatment condition for decrease the microstructure (grain size) and super plasticity property in two-phase stainless steels. Also here we want to show the appropriate ranges of temperature and strain rate used in the process super plasticity to obtain maximum elongation for this kind of steel. The results showed that by using thermo-mechanical treatment that consists of dissolving, rolling and annealing, the grain size can be achieved to 0.5-4 mm.The maximum elongation is achieved 1000% in the temperature range 800-1000oC and strain rate is achieved 0.01-0.1 s-1. Under these conditions, the sensitivity coefficient of strain rate is around 0.6.

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