High Temperature Deformation and Corrosion Behavior of 2205 Duplex Stainless Steel under Low Strain Rate of 0.005 s-1

Yin Hui Yang

doi:10.4028/www.scientific.net/AMR.933.27

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 933High Temperature Deformation and Corrosion...

High Temperature Deformation and Corrosion Behavior of 2205 Duplex Stainless Steel under Low Strain Rate of 0.005 s^-1

Abstract:

The effect of deformation temperature on microstructure, flow stress and corrosion resistance of 2205 duplex stainless steel was investigated at low strain rate of 0.005 s^-1. The flow curve analysis showed that the specimen was mainly characterized with dynamic recovery (DRV) at 850 °C, and the characteristic of dynamic recrystallization (DRX) was enhanced with deformation temperature increasing to 950 and 1050 °C, then flow curves presented steady state with characteristic of DRV at 1150 and 1250 °C. Microstructure analysis exhibited the austenite DRX at deformation temperatures of 1050 and 1150 °C. The specimens deformed at temperatures ranging from 850 to 1250 °C and strain rate of 0.005 s^-1presented active-transpassive behavior, indicating faster corrosion rate compared with the as-received, which can be attributed to more ferrite (δ) and austenite (γ) grain boundaries or δ/γ phase boundaries formation.

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Periodical:

Advanced Materials Research (Volume 933)

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27-31

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.933.27

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Online since:

May 2014

Authors:

Yin Hui Yang*

Keywords:

Deformation Temperature, Dynamic Recrystallization (DRX), Grain Boundary, Microstructure

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