Results 251 to 260 of about 168,832 (301)

Processing Strategies for Hot-Rolled Medium-Mn Steels

Materials Science Forum, 2021
The study aims at reviewing manufacturing schedules for hot-rolled and intercritically-annealed and thermomechanically processed medium-Mn sheet steels. Major differences between these two types of processing are indicated. They include initial microstructure (low-C martensite for hot-rolled products and deformed austenite for thermomechanically ...
Adam Grajcar, Skowronek Adam, Mateusz Morawiec   +2 more
openaire   +1 more source

Medium-Mn Martensitic Steel Ductilized by Baking

Metallurgical and Materials Transactions A, 2019
In this study, the microstructure and mechanical properties, especially the impacts of low-temperature tempering, of the medium-Mn martensitic steel were examined. The low-temperature tempering simulated paint baking in car manufacturing. Significant improvement of tensile ductility was achieved by baking, associating with a change from brittle to ...
Q. Lu, M. Eizadjou, J. Wang, A. Ceguerra, S. Ringer, H. Zhan, L. Wang, Q. Lai   +7 more
openaire   +1 more source

Characterization of fracture in medium Mn steel

Materials Science and Engineering: A, 2017
Abstract In the present study, the damage mechanisms operating during the tensile deformation of intercritically annealed Fe-0.3%C-6.0%Mn-3%Al-1.5%Si medium Mn steel were investigated. The steel was annealed at different temperatures to obtain a range of strain hardening properties in uniaxial tension by activating the twinning-induced plasticity and
Hongki Choi, Seonjong Lee, Lee, J, BARLAT, FREDERIC GERARD, De Cooman, B.C.   +4 more
openaire   +2 more sources

Physical metallurgy of medium-Mn advanced high-strength steels

International Materials Reviews, 2023
Steels with medium manganese (Mn) content (3∼12 wt-%) have emerged as a new alloy class and received considerable attention during the last decade. The microstructure and mechanical response of such alloys show significant differences from those of established steel grades, especially pertaining to the microstructural variety that can be tuned and the
Binhan Sun, Alisson Kwiatkowski da Silva, Yuxiang Wu, Yan Ma, Hao Chen, Colin Scott, Dirk Ponge, Dierk Raabe   +7 more
openaire   +2 more sources

Austenite growth and stability in medium Mn, medium Al Fe-C-Mn-Al steels

Computational Materials Science, 2016
Abstract Fe-C-Mn-Al alloys are promising materials to respond to the new European regulations on car CO2 emissions. The austenite growth kinetics for a mid-Mn, mid-Al alloy have been investigated by DICTRA calculations. Our results establish that Al only affects the thermodynamic properties of the system, its diffusivity does not influence the ...
Jonathan Emo, Philippe Maugis, Astrid Perlade   +2 more
openaire   +1 more source

Extraordinary Lüders-strain-rate in medium Mn steels

Materialia, 2019
Abstract An innovative experimental means based on high-speed digital image correlation (DIC) is employed in this work to investigate the Luders band formation mechanisms in a medium Mn transformation-induced plasticity (TRIP) steel, allowing precise assessment of local strain rate inside the Luders band. The stress-controlled instead of conventional
X.G. Wang, B.B. He, C.H. Liu, C. Jiang, M.X. Huang   +4 more
openaire   +1 more source

Effects of Mn Segregations on Intergranular Fracture in a Medium‐Mn Low‐Density Steel

steel research international, 2022
Al‐bearing medium‐Mn low‐density steels possess great potential in the automotive industry because of their excellent mechanical properties based on transformation‐induced plasticity and low specific weight. Reducing the austenite stability against deformation‐induced martensitic transformation enables a high strain‐hardening capacity to be obtained ...
Heechan Jung, Gunjick Lee, Minseo Koo, Hyejin Song, Won-Seok Ko, Seok Su Sohn   +5 more
openaire   +1 more source

Genesis of plasticity-induced serrated metal flow in medium-Mn steel

Calphad, 2020
An excellent strength-ductility combination offered by martensite-austenite microstructure in medium-Mn steels draws special attention for automotive applications. However, yielding of the steel is often compromised in the form of serration, with a jerky metal flow and deformation banding, by the reason yet to be settled.
N. Bhowmik, S. Ghosh, S. Mandal, A. Haldar, P.P. Chattopadhyay   +4 more
openaire   +1 more source

Low-temperature superplasticity of Si-added medium-Mn steel

Materials Research Proceedings, 2023
Abstract. Grain boundary sliding, a deformation mechanism of superplasticity, occurs only at high temperatures, making it difficult for superplastic steels to be practically applied due to high energy consumption and surface oxidation. Therefore, in the present study, we introduce a newly developed Si-added medium-Mn steel, which can be ...
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Hardenability of Medium Carbon Cr-Mn-Mo Alloyed Steels

Materials Science Forum, 2019
Three medium carbon Cr-Mn-Mo structural steels with different content of alloying elements were studied. The austenite transformation during continuous cooling was investigated using dilatometer and metallographic analysis. The CCT diagrams were plotted showing the effect of the increased alloying elements content and B and Nb micro-alloying on the ...
Mikhail V. Maisuradze, Maksim A. Ryzhkov
openaire   +1 more source