Journal ArticleDOI
A strong and ductile medium Mn steel manufactured via ultrafast heating process
TLDR
In this paper, ultrafast heating at the rates of 10−300°C/s was employed as a new strategy to anneal a cold-rolled 7wt% Mn steel, followed by the immediate cooling.About:
This article is published in Journal of Materials Science & Technology.The article was published on 2022-01-20. It has received 21 citations till now. The article focuses on the topics: Martensite & Austenite.read more
Citations
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Microstructural evolution and strain hardening behavior of a novel two-stage warm rolled ultra-high strength medium Mn steel with heterogeneous structures
TL;DR: In this paper , a two-stage warm rolling schedule was developed to process the investigated medium Mn steel (Fe-5.9Mn-0.28C), and the obtained sample exhibits excellent mechanical properties with the yield strength and ultimate tensile strength of 905 MPa and 1320 MPa, respectively.
Journal ArticleDOI
Improving strength–ductility synergy in medium Mn steel by combining heterogeneous structure and TRIP effect
TL;DR: In this paper , the deformation mechanisms of a novel medium Mn steel (Fe 0.14C 7.8Mn −1.11Zr, wt%) were investigated through mixed multiphase preservation-intercritical annealing route.
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The failure mechanism of resistance spot welded third-generation medium-Mn steel during shear-tension loading
TL;DR: In this paper , the failure mechanism of M-Mn spot weld during shear-tension loading was investigated and it was shown that cracks initially propagated in the heat-affected zone, they eventually spread out towards the fusion zone (FZ) resulting in the occurrence of interfacial failure.
Journal ArticleDOI
A feasible route to produce 1.1 GPa ferritic-based low-Mn lightweight steels with ductility of 47%
Hyo Ju Bae,Kwang Kyu Ko,Eun-Hye Park,Muhammad Ishtiaq,Hyoung Seok Park,Jae Seok Jeong,Jung Gi Kim,Hyokyung Sung,Jae Bok Seol +8 more
TL;DR: In this paper , a low-temperature tempering-induced partitioning (LTP) treatment was proposed for low-Mn ferritic lightweight steels, where the size-dependent partitioning results in slip plane spacing modification and lattice strain.
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The excellent strength and ductility matching of directly warm-rolled V-alloyed medium manganese steel by stacking fault networks
TL;DR: In this article , a V-alloyed medium manganese steel with the yield strength of 1107MPa, tensile strength of 1231MPa and total elongation of 44.5% was obtained directly by warm rolling.
References
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Journal ArticleDOI
Deformation and fracture mechanisms in fine- and ultrafine-grained ferrite/martensite dual-phase steels and the effect of aging
TL;DR: In this paper, three ferrite/martensite dual-phase steels varying in the ferrite grain size (12.4, 2.4 and 1.2μm) but with the same martensite content (∼30 vol%) were produced by large-strain warm deformation at different deformation temperatures, followed by intercritical annealing.
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Experimental and numerical analysis on formation of stable austenite during the intercritical annealing of 5Mn steel
TL;DR: In this paper, the growth of austenite nucleated at the ferrite lath boundaries was analyzed for intercritical annealing at 650°C for various durations up to 144h in 5.5% Mn-containing steel.
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Ultrafine-grained microstructures and mechanical properties of alloy steels
TL;DR: In this article, a variety of alloy steels with grain sizes in the range 0.3 to 1.1 μ were obtained in manganese and nickel steels by annealing 1 to 400 hr at temperatures between 450° and 650°C (840° to 1200°F).
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Reversion Mechanism from Deformation Induced Martensite to Austenite in Metastable Austenitic Stainless Steels.
TL;DR: In this article, the authors investigated the reversion mechanism from deformation induced martensite (α') to austenite (γ) by means of magnetic analysis and transmission electron microscopy.
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Medium Mn transformation-induced plasticity steels: Recent progress and challenges
Dong-Woo Suh,Sung-Joon Kim +1 more
TL;DR: In this article, the authors highlight the recent advance in strong transformation-induced plasticity (TRIP) steels, which have higher alloying contents compared to the conventional TRIP steels for achieving tensile strength higher than 1 GPa.