An ultrahigh strength and enhanced ductility cold-rolled medium-Mn steel treated by intercritical annealing

X Li, R Song, N Zhou, J Li - Scripta Materialia, 2018 - Elsevier
An ultrahigh strength and enhanced ductility cold-rolled medium-Mn steel was manufactured
via intercritical annealing. The fine lamellar and equiaxed duplex microstructure, austenite …

Novel 1.4 GPa-strength medium-Mn steel with uncompromised high ductility

S Yan, T Liang, Z Wang, B Yan, T Li, X Liu - Materials Science and …, 2020 - Elsevier
Abstract A Fe-8.9 Mn-1.59 Si-1.0 Al-0.25 C medium-Mn steel was designed, and lath-like
recovered martensite and reversed austenite were mainly obtained due to 20% reduction …

Improving yield strength and elongation combination by tailoring austenite characteristics and deformation mechanism in medium Mn steel

J Zhang, Y Xu, D Han, Z Tong - Scripta Materialia, 2022 - Elsevier
A novel concept of microstructure design involving warm rolling and low-temperature
annealing has been proposed to greatly improve the strength-ductility combination of …

Microstructural evolution and mechanical behavior of a novel heterogeneous medium Mn cold-rolled steel

X Zhang, J Yan, T Liu, H Liu, Y Shi, Q Zhou… - Materials Science and …, 2021 - Elsevier
A novel heterogeneous medium Mn steel with a nominal composition of Fe-0.18 C-7.8 Mn-
1.65 Al-0.04 Ce wt.% is successfully fabricated by introducing various nucleation energy …

Microstructural evolution and tensile properties of 70 GPa·% grade strong and ductile hot-rolled 6Mn steel treated by intercritical annealing

J Li, R Song, X Li, N Zhou, R Song - Materials Science and Engineering: A, 2019 - Elsevier
An ultrahigh tensile strength (over 1000 MPa) and enhanced elongation (65%) of hot-rolled
6Mn steel is designed through controlling the combination of fraction and stability of …

Microstructural evolution and strain hardening behavior of a novel two-stage warm rolled ultra-high strength medium Mn steel with heterogeneous structures

Y Zou, H Ding, Y Zhang, Z Tang - International Journal of Plasticity, 2022 - Elsevier
A heterostructured medium Mn steel with duplex phases (ferrite and austenite) and multiple
morphologies (lath-typed and granular) is fabricated by a novel two-stage warm rolling …

Influence of intercritical annealing temperature on microstructure and mechanical properties of a cold-rolled medium-Mn steel

Y Ma, W Song, S Zhou, A Schwedt, W Bleck - Metals, 2018 - mdpi.com
Medium-Mn steels are characterized by ultrafine-grained (UFG) duplex microstructure
consisting of ferrite and a large amount of retained austenite. Intercritical annealing is of …

Tensile Behavior of Intercritically Annealed Ultra‐Fine Grained 8% Mn Multi‐Phase Steel

S Lee, BC De Cooman - steel research international, 2015 - Wiley Online Library
The room temperature tensile behavior of intercritically annealed hot‐rolled Fe‐8% Mn‐
0.4% C‐3% Al‐2% Si‐(0–0.2)% V steel, with an ultra‐fine grained austeno‐ferritic …

Ultrafine grained high strength low alloy steel with high strength and high ductility

J Shi, WQ Cao, H Dong - Materials Science Forum, 2010 - Trans Tech Publ
In this study a C-Mn High Strength Low Alloy steel (HSLAs) was processed by quenching
and austenite reverted transformation during annealing (ART-annealing), which results in an …

[HTML][HTML] Dual-phase hetero-structured strategy to improve ductility of a low carbon martensitic steel

JX Huang, Y Liu, T Xu, XF Chen, QQ Lai… - Materials Science and …, 2022 - Elsevier
Martensitic transformation significantly increases the strength of low-carbon steels, while it is
usually at expense of the formability and ductility. In order to further improve the mechanical …