Portevin–Le Chatelier (PLC) instabilities and slant fracture in C–Mn steel round tensile specimens

2011 ◽  
Vol 64 (5) ◽  
pp. 430-433 ◽  
Author(s):  
Huaidong Wang ◽  
Clotilde Berdin ◽  
Matthieu Mazière ◽  
Samuel Forest ◽  
Claude Prioul ◽  
...  
Keyword(s):  
Slant Fracture ◽  
Mn Steel

Probabilistic modelling of the size effect on ductility of a C-Mn steel

1998 ◽  
Vol 08 (PR8) ◽  
pp. Pr8-63-Pr8-70
Author(s):  
S. Carassou ◽  
M. Soilleux ◽  
B. Marini
Keyword(s):  
Size Effect ◽  
Probabilistic Modelling ◽  
Mn Steel

scholarly journals Experimental Study on Laser-MIG Hybrid Welding of Thick High-Mn Steel Plate for Cryogenic Tank Production

2021 ◽  
Vol 9 (6) ◽  
pp. 604
Author(s):  
Du-Song Kim ◽  
Hee-Keun Lee ◽  
Woo-Jae Seong ◽  
Kwang-Hyeon Lee ◽  
Hee-Seon Bang
Keyword(s):  
Low Temperature ◽  
Yield Strength ◽  
Steel Plate ◽  
Weld Zone ◽  
Base Material ◽  
Hardness Test ◽  
Steel Plates ◽  
Hybrid Welding ◽  
Temperature Impact ◽  
Mn Steel

The International Maritime Organization has recently updated the ship emission standards to reduce atmospheric contamination. One technique for reducing emissions involves using liquefied natural gas (LNG). The tanks used for the transport and storage of LNG must have very low thermal expansion and high cryogenic toughness. For excellent cryogenic properties, high-Mn steel with a complete austenitic structure is used to design these tanks. We aim to determine the optimum welding conditions for performing Laser-MIG (Metal Inert Gas) hybrid welding through the MIG leading and laser following processes. A welding speed of 100 cm/min was used for welding a 15 mm thick high-Mn steel plate. The welding performance was evaluated through mechanical property tests (tensile and yield strength, low-temperature impact, hardness) of the welded joints after performing the experiment. As a result, it was confirmed that the tensile strength was slightly less than 818.4 MPa, and the yield strength was 30% higher than base material. The low-temperature impact values were equal to or greater than 58 J at all locations in the weld zone. The hardness test confirmed that the hardness did not exceed 292 HV. The results of this study indicate that it is possible to use laser-MIG hybrid welding on thick high-Mn steel plates.

scholarly journals 3D-FEM Simulation of Hot Rolling Process and Characterization of the Resultant Microstructure of a Light-Weight Mn Steel

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 569
Author(s):  
Ana Claudia González-Castillo ◽  
José de Jesús Cruz-Rivera ◽  
Mitsuo Osvaldo Ramos-Azpeitia ◽  
Pedro Garnica-González ◽  
Carlos Gamaliel Garay-Reyes ◽  
...  
Keyword(s):  
Hot Rolling ◽  
Thermomechanical Processing ◽  
Computational Simulation ◽  
Effective Strain ◽  
Fem Simulation ◽  
Rolling Process ◽  
3D Fem ◽  
Hot Rolling Process ◽  
Mn Steel

Computational simulation has become more important in the design of thermomechanical processing since it allows the optimization of associated parameters such as temperature, stresses, strains and phase transformations. This work presents the results of the three-dimensional Finite Element Method (FEM) simulation of the hot rolling process of a medium Mn steel using DEFORM-3D software. Temperature and effective strain distribution in the surface and center of the sheet were analyzed for different rolling passes; also the change in damage factor was evaluated. According to the hot rolling simulation results, experimental hot rolling parameters were established in order to obtain the desired microstructure avoiding the presence of ferrite precipitation during the process. The microstructural characterization of the hot rolled steel was carried out using optical microscopy (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD). It was found that the phases present in the steel after hot rolling are austenite and α′-martensite. Additionally, to understand the mechanical behavior, tensile tests were performed and concluded that this new steel can be catalogued in the third automotive generation.

Competing deformation mechanisms in an austenite-ferrite medium-Mn steel at different strain rates

2021 ◽  
pp. 141357
Author(s):  
Z.H. Cai ◽  
D.L. Zhang ◽  
L.F. Ma ◽  
H. Ding ◽  
Y. Feng ◽  
...  
Keyword(s):  
Deformation Mechanisms ◽  
Strain Rates ◽  
Medium Mn Steel ◽  
Mn Steel

Hot ductility behavior of a Fe-0.3C-9Mn-2Al medium Mn steel

2021 ◽  
Vol 28 (3) ◽  
pp. 422-429
Author(s):  
Yong-jin Wang ◽  
Shuai Zhao ◽  
Ren-bo Song ◽  
Bin Hu
Keyword(s):  
Hot Ductility ◽  
Medium Mn Steel ◽  
Mn Steel

Modelling of non-proportional hardening by dislocation based latent effects for SA333 Grade-6 C-Mn Steel

2019 ◽  
Vol 6 (8) ◽  
pp. 086562
Author(s):  
S Bhattacharjee ◽  
S Dhar ◽  
S K Acharyya ◽  
S K Gupta
Keyword(s):  
Latent Effects ◽  
Mn Steel

Dynamic Transformation of Austenite at Temperatures above the Ae3

2018 ◽  
Vol 941 ◽  
pp. 633-638
Author(s):  
John Joseph Jonas ◽  
Clodualdo Aranas Jr. ◽  
Samuel F. Rodrigues
Keyword(s):  
Electron Microscopy ◽  
Driving Force ◽  
Energy Difference ◽  
Accelerated Cooling ◽  
Free Energy Difference ◽  
Dynamic Transformation ◽  
Plate Rolling ◽  
Temperature Transformation ◽  
Mn Steel ◽  
Kinetics Of

Under loading above the Ae3 temperature, austenite transforms displacively into Widmanstätten ferrite. Here the driving force for transformation is the net softening during the phase change while the obstacle consists of the free energy difference between austenite and ferrite as well as the work of shear accommodation and dilatation during the transformation. Once the driving force is higher than the obstacle, phase transformation occurs. This phenomenon was explored here by means of the optical and electron microscopy of a C-Mn steel deformed above their transformation temperatures. Strain-temperature-transformation (STT) curves are presented that accurately quantify the amount of dynamically formed ferrite; the kinetics of retransformation are also specified in the form of appropriate TTRT diagrams. This technique can be used to improve the models for transformation on accelerated cooling in strip and plate rolling.

On the mechanism of cross-slip induced dislocation substructure formation in an high-Mn steel

Materialia ◽  
2021 ◽  
pp. 101042
Author(s):  
S.R. Das ◽  
S. Shyamal ◽  
T. Sahu ◽  
J.I. Kömi ◽  
P.C. Chakraborti ◽  
...  
Keyword(s):  
Dislocation Substructure ◽  
Cross Slip ◽  
Substructure Formation ◽  
Mn Steel ◽  
Induced Dislocation

Austenite/ferrite interface movement during intercritical annealing of a medium Mn steel

2021 ◽  
pp. 1-7
Author(s):  
M. K. Bai ◽  
D. P. Yang ◽  
G. D. Wang ◽  
J. H. Ryu ◽  
K. Y. Lee ◽  
...  
Keyword(s):  
Intercritical Annealing ◽  
Medium Mn Steel ◽  
Mn Steel ◽  
Interface Movement
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