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Authors: Chaobo Pu ; Yinhui Yang ; Yahui Deng ; Ke Ni ; Xiaoyu Pan and Zeyao Zeng

Affiliation: School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming and China, China

Keyword(s): duplex stainless steel, dynamic recrystallization, deformation softening, critical strain

Abstract: In the temperature range of 1073-1423K and strain rates of 0.01-10s-1, single-pass compression tests were performed on a Gleeble-3800 thermo-mechanical simulator to study the dynamic softening behaviour of 23Cr-2.1Ni-10Mn-1.3Mo low nickel type duplex stainless steel. The flow curves and microstructure showed that the thermal deformation softening was mainly caused by dynamic recovery (DRV) under the condition of high strain rate and low temperature, while Dynamic recrystallization (DRX) softening was mainly occurred at low strain rate. The austenite phase softening changed from DRX to DRV with increasing strain rate at the same temperature. The deformation activation energy Q and stress exponent n are calculated as 478.83kJ/mol and 5.43, respectively. Combined with Z parameter analysis, DRX was easily to occur under the condition of low Z (1323K, 0.01s-1). The critical strain (stress) and peak strain (stress) obeyed a linear relationship, and the critical strain (stress) decreased wi th increasing deformation temperature. The linear equations of critical stress (strain) and Z value were obtained by regression analysis. (More)

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Paper citation in several formats:
Pu, C.; Yang, Y.; Deng, Y.; Ni, K.; Pan, X. and Zeng, Z. (2019). Study on Recrystallization Softening Behaviour of 23Cr-2.1Ni-10Mn-1.3Mo Economical Duplex Stainless Steels. In The Second International Conference on Materials Chemistry and Environmental Protection - MEEP; ISBN 978-989-758-360-5, SciTePress, pages 184-192. DOI: 10.5220/0008187401840192

@conference{meep19,
author={Chaobo Pu. and Yinhui Yang. and Yahui Deng. and Ke Ni. and Xiaoyu Pan. and Zeyao Zeng.},
title={Study on Recrystallization Softening Behaviour of 23Cr-2.1Ni-10Mn-1.3Mo Economical Duplex Stainless Steels},
booktitle={The Second International Conference on Materials Chemistry and Environmental Protection - MEEP},
year={2019},
pages={184-192},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0008187401840192},
isbn={978-989-758-360-5},
}

TY - CONF

JO - The Second International Conference on Materials Chemistry and Environmental Protection - MEEP
TI - Study on Recrystallization Softening Behaviour of 23Cr-2.1Ni-10Mn-1.3Mo Economical Duplex Stainless Steels
SN - 978-989-758-360-5
AU - Pu, C.
AU - Yang, Y.
AU - Deng, Y.
AU - Ni, K.
AU - Pan, X.
AU - Zeng, Z.
PY - 2019
SP - 184
EP - 192
DO - 10.5220/0008187401840192
PB - SciTePress

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