The Novel Combination of Strength and Ductility in 0.4C‐7Mn‐3.2Al Medium Manganese Steel by Intercritical Annealing

2019 ◽  
Vol 90 (12) ◽  
pp. 1900228 ◽  
Author(s):  
Chao Lv ◽  
YanHua Wang ◽  
Xingmin Huang ◽  
Lei Zhang ◽  
QinQin Fu ◽  
...  
Keyword(s):  
Intercritical Annealing ◽  
Manganese Steel ◽  
The Novel ◽  
Medium Manganese Steel ◽  
Strength And Ductility

scholarly journals Ultrafinegrained Microstructure in a Medium Manganese Steel after Warm Rolling without Intercritical Annealing

2017 ◽  
Vol 57 (6) ◽  
pp. 1121-1128 ◽  
Author(s):  
Aline Silva Magalhães ◽  
Iane Dutra Moutinho ◽  
Indiana Rosa Oliveira ◽  
Aline Oliveira Vasconcelos Ferreira ◽  
Davi Silva Alves ◽  
...  
Keyword(s):  
Intercritical Annealing ◽  
Warm Rolling ◽  
Manganese Steel ◽  
Medium Manganese Steel

Analysis of medium manganese steel through cold-rolling and intercritical annealing or warm-rolling

2018 ◽  
Vol 35 (17) ◽  
pp. 2120-2133 ◽  
Author(s):  
Aline Silva Magalhães ◽  
Carlos Eduardo dos Santos ◽  
Aline Oliveira Vasconcelos Ferreira ◽  
Davi Silva Alves ◽  
Dagoberto Brandão Santos
Keyword(s):  
Cold Rolling ◽  
Intercritical Annealing ◽  
Warm Rolling ◽  
Manganese Steel ◽  
Medium Manganese Steel

scholarly journals Adjustment of Mechanical Properties of Medium Manganese Steel Produced by Laser Powder Bed Fusion with a Subsequent Heat Treatment

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3081
Author(s):  
Lena Heemann ◽  
Farhad Mostaghimi ◽  
Bernd Schob ◽  
Frank Schubert ◽  
Lothar Kroll ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Retained Austenite ◽  
Intercritical Annealing ◽  
High Strength ◽  
Manganese Steel ◽  
Manganese Concentration ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed ◽  
Medium Manganese Steel

Medium manganese steels can exhibit both high strength and ductility due to transformation-induced plasticity (TRIP), caused by metastable retained austenite, which in turn can be adjusted by intercritical annealing. This study addresses the laser additive processability and mechanical properties of the third-generation advanced high strength steels (AHSS) on the basis of medium manganese steel using Laser Powder Bed Fusion (LPBF). For the investigations, an alloy with a manganese concentration of 5 wt.% was gas atomized and processed by LPBF. Intercritical annealing was subsequently performed at different temperatures (630 and 770 °C) and three annealing times (3, 10 and 60 min) to adjust the stability of the retained austenite. Higher annealing temperatures lead to lower yield strength but an increase in tensile strength due to a stronger work-hardening. The maximum elongation at fracture was approximately in the middle of the examined temperature field. The microstructure and properties of the alloy were further investigated by scanning electron microscopy (SEM), hardness measurements, X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and element mapping.

scholarly journals Microstructure Evolution and Tensile Behaviour of a Cold Rolled 8 Wt Pct Mn Medium Manganese Steel

2021 ◽  
Author(s):  
T. W. J. Kwok ◽  
P. Gong ◽  
X. Xu ◽  
J. Nutter ◽  
W. M. Rainforth ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Intercritical Annealing ◽  
Tensile Tests ◽  
Rolling Reduction ◽  
Manganese Steel ◽  
Tensile Behaviour ◽  
Significant Drop ◽  
Cold Rolling Reduction ◽  
Medium Manganese Steel ◽  
Cold Rolled

AbstractA novel medium manganese steel with composition Fe–8.3Mn–3.8Al–1.8Si–0.5C–0.06V–0.05Sn was developed and thermomechanically processed through hot rolling and intercritical annealing. The steel possessed a yield strength of 1 GPa, tensile strength of 1.13 GPa and ductility of 41 pct. In order to study the effect of cold rolling after intercritical annealing on subsequent tensile properties, the steel was further cold rolled up to 20 pct reduction. After cold rolling, it was observed that the strain hardening rate increased continuously with increasing cold rolling reduction but without a significant drop in ductility during subsequent tensile tests. The microstructural evolution with cold rolling reduction was analysed to understand the mechanisms behind this phenomena. It was found that cold rolling activated additional twinning systems which provided a large number of potent nucleation sites for strain induced martensite to form during subsequent tensile tests in what can be described as an enhanced TRIP effect.

scholarly journals Influence of Intercritical Annealing on Microstructure and Mechanical Properties of a Medium Manganese Steel

2017 ◽  
Vol 207 ◽  
pp. 1803-1808 ◽  
Author(s):  
Marco Haupt ◽  
Aniruddha Dutta ◽  
Dirk Ponge ◽  
Stefanie Sandlöbes ◽  
Monika Nellessen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Intercritical Annealing ◽  
Manganese Steel ◽  
Microstructure And Mechanical Properties ◽  
Medium Manganese Steel
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