Dynamic Recrystallization Behavior of N08028 Corrosion Resistant Alloy

Abstract:

The dynamic recrystallization (DRX) of N08028 corrosion resistant alloy was investigated by hot compression tests which were performed at the deformation temperatures from 1000°C to 1200°C and strain rate from 0.01s^-1 to 1s^-1 on a Gleeble-1500 thermo-mechanical simulator. The stress-strain curves at all strain rates showed the characteristics of DRX and exhibited a peak in the flow stress before reaching steady state. The microstructures after deformation demonstrated that DRX took place in all specimens. The results show that DRX occurs more easily with the decrease of strain rate and the increase of deformation temperature. By regression analysis, the activation energy in the entire range of deformation conditions, and the relationship of critical strain as well as strain for 50% DRX with deformation conditions were determined. A good agreement between the experimental and predicted results shows that the proposed DRX kinetic equations can give an accurate estimate of the DRX behavior in hot deformed N08028 corrosion resistant alloy.

• Periodical: Materials Science Forum (Volume 788)
• Pages: 396-405
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.788.396
• Online since: April 2014
• Authors: Lei Wang*, Feng Liu
• Keywords: Dynamic Recrystallization (DRX), Hot Compression Test, Kinetic Model, N08028 Corrosion Alloy

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