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

Microband Dislocation Substructure: Formation and Evolution with Deformation

2014 ◽  
Vol 1013 ◽  
pp. 67-71 ◽  
Author(s):  
Nina Koneva ◽  
Ludmila Trishkina ◽  
Marina Fedorischeva ◽  
Eduard Kozlov
Keyword(s):  
Electron Microscopy ◽  
Plastic Deformation ◽  
Dislocation Substructure ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Large Plastic Deformation ◽  
Substructure Formation ◽  
Formation And Evolution

In the paper on a base of electron microscopy study a dynamic of evolution of dislocation substructures (DSS) arising on a stage large plastic deformation is examined. Microband dislocation substructure is a foundation of this consideration. Formation and evolution at deformation of this substructure for Cu-Al and Cu-Mn alloys are considered.

scholarly journals Application of Forward Modelling and Dictionary Indexing to EBSD Orientation Data as a Means of Quantifying Dislocation Substructure Formation in FCC Metals

2019 ◽  
Vol 25 (S2) ◽  
pp. 208-209
Author(s):  
Daniel L. Foley ◽  
Cassandra Pate ◽  
Kyle Matthews ◽  
Xingyuan Zhao ◽  
Nicolas Savino ◽  
...  
Keyword(s):  
Dislocation Substructure ◽  
Forward Modelling ◽  
Orientation Data ◽  
Fcc Metals ◽  
Substructure Formation

Observation of Superlattice Dislocations on Cube Planes in Ni3Al

1973 ◽  
Vol 31 ◽  
pp. 174-175 ◽  
Author(s):  
J. M. Oblak ◽  
W. H. Rand
Keyword(s):  
Nearest Neighbor ◽  
Antiphase Boundary ◽  
Nearest Neighbors ◽  
High Energy ◽  
Cross Slip ◽  
Octahedral Plane ◽  
Trapping Mechanism ◽  
Slip Traces

The energy of an a/2 <110> shear antiphase. boundary in the Ll2 expected to be at a minimum on {100} cube planes because here strue ture is there is no violation of nearest-neighbor order. The latter however does involve the disruption of second nearest neighbors. It has been suggested that cross slip of paired a/2 <110> dislocations from octahedral onto cube planes is an important dislocation trapping mechanism in Ni3Al; furthermore, slip traces consistent with cube slip are observed above 920°K.Due to the high energy of the {111} antiphase boundary (> 200 mJ/m2), paired a/2 <110> dislocations are tightly constricted on the octahedral plane and cannot be individually resolved.

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.

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