Anisotropy of the mechanical properties of textured high-manganese steel

1985 ◽  
Vol 27 (3) ◽  
pp. 210-212
Author(s):  
V. P. Ponomarenko ◽  
A. Ya. Shvartser ◽  
G. V. Stroganova
Keyword(s):  
Mechanical Properties ◽  
Manganese Steel ◽  
High Manganese ◽  
High Manganese Steel

scholarly journals A Study on Fiber Laser Welding of High-Manganese Steel for Cryogenic Tanks

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1536
Author(s):  
Jaewoong Kim ◽  
Jisun Kim ◽  
Changmin Pyo
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Yield Strength ◽  
Laser Welding ◽  
Base Material ◽  
Manganese Steel ◽  
High Manganese ◽  
Fiber Laser Welding ◽  
High Manganese Steel ◽  
Welding Part

As the environmental regulations on ship emissions by the International Maritime Organization (IMO) become stricter, the demand for a ship powered by liquefied natural gas (LNG) is rapidly increasing worldwide. Compared to other materials, high-manganese steel has the advantages of superior impact toughness at cryogenic temperatures, a low thermal expansion coefficient, and a low-cost base material and welding rod. However, there is a limitation that the mechanical properties of a filler material are worse than those of a base material that has excellent mechanical properties. To solve these shortcomings, a basic study was performed to apply fiber laser welding with little welding deformation and no filler material to high-manganese steel. The relationship between laser welding parameters and penetration shapes was confirmed through cross-section observation and analysis by performing a bead on plate (BOP) test by changing laser power and welding speed, which are the main parameters of laser welding. In addition, the welding performance was evaluated through mechanical property tests (yield strength, tensile strength, hardness, cryogenic impact strength) of a welding part after performing the high-manganese steel laser butt welding experiment. As a result, it was confirmed that the yield strength of a high-manganese steel laser welding part was 97.5% of that of a base metal, and its tensile strength was 93.5% of that of a base metal.

The Influence of Thermomechanical Controlled Processing on Bainite Formation in Low Carbon High Strength Steel

2014 ◽  
Vol 783-786 ◽  
pp. 21-26
Author(s):  
Xiao Jun Liang ◽  
Ming Jian Hua ◽  
Anthony J. DeArdo
Keyword(s):  
Mechanical Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Manganese Steel ◽  
Low Carbon ◽  
High Manganese ◽  
Bainite Transformation ◽  
High Manganese Steel ◽  
Cooling Rates ◽  
Controlled Processing

Thermomechanical controlled processing is a very important way to control the microstructure and mechanical properties in low carbon, high strength steel. This is especially true in the case of bainite formation, where the complexity of the austenite-bainite transformation makes the control of the processing important. In this study, a low carbon, high manganese steel containing niobium was investigated to better understand the roles of austenite conditioning and cooling rates on the bainitic phase transformation. Specimens were compared with and without deformation, and followed by seven different cooling rates ranging between 0.5°C/s and 40°C/s. The CCT curves showed that the transformation behaviors and temperatures are very different. The different bainitic microstructures which varied with austenite deformation and cooling rates will be discussed.

Mechanical properties of cryogenic high manganese steel joints welded filled with nickel-based materials by SMAW and SAW

2021 ◽  
pp. 130596
Author(s):  
Xiaoyu Fan ◽  
Yuntao Li ◽  
Yanchang Qi ◽  
Chengyong Ma ◽  
Zhihua Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Manganese Steel ◽  
High Manganese ◽  
High Manganese Steel ◽  
Steel Joints

Effect of Mo2C Addition on the Microstructure and Properties of TiC-High Manganese Steel-Bonded Carbide

2021 ◽  
Vol 1035 ◽  
pp. 752-758
Author(s):  
Li Bo Guo ◽  
Jun Chao He ◽  
Guo Ping Li ◽  
Lian Wu Yan
Keyword(s):  
Mechanical Properties ◽  
Rupture Strength ◽  
Physical And Mechanical Properties ◽  
Growth Inhibitor ◽  
Manganese Steel ◽  
Powder Metallurgy Method ◽  
High Manganese ◽  
High Manganese Steel ◽  
Interesting Phenomenon ◽  
Grain Growth Inhibitor

TiC-high manganese steel-bonded carbide was prepared by powder metallurgy method with varied Mo2C content (0, 2.5%, 5%, 7.5% and 10% respectively), and the effects of Mo2C addition on the microstructure and mechanical properties of the fabricated cermets were studied. The microstructures of the fabricated cermets were observed and analyzed by scanning electron microscope (SEM), and the physical and mechanical properties of the cermets were also tested. The results show that the microstructure of the cermet without Mo2C additive was finer than that of the cermets with 2.5% and 5% Mo2C addition, though Mo2C was an effective grain growth inhibitor of TiC- and/or TiCN-based refractory materials because of low inherent solubility of TiC in Fe binder. An interesting phenomenon was also found that black core-gray rim was observed in the microstructure of the cermet without Mo2C addition. The microstructure of the fabricated cermets was fine with the increase of Mo2C content. The results also show that the relative density and hardness of the cermet increased monotonously with the increase of Mo2C content, hence, the transverse rupture strength (TRS) and impact toughness (IM) of the fabricated cermets increased first and then decreased, and the TRS and IM reached the maximum valve of 2189 MPa and 11.7 J/cm2 when Mo2C content was 7.5% and 5% respectively.

scholarly journals Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1167 ◽  
Author(s):  
Geon-Woo Park ◽  
Haeju Jo ◽  
Minha Park ◽  
Sunmi Shin ◽  
Won-Seok Ko ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Base Metal ◽  
Steel Sheet ◽  
Weld Zone ◽  
Manganese Steel ◽  
High Manganese ◽  
High Manganese Steel ◽  
Gas Tungsten Arc ◽  
Microstructure And Mechanical Properties

This study investigated microstructure and mechanical properties of high manganese steel sheet fabricated by gas tungsten arc welding (GTAW). The weld zone showed longitudinal coarse grains due to the coalescence of columnar dendrites grown into the direction of heat source, and the HAZ showed equiaxed coarser grains than the base metal due to the thermal effect of GTAW process. Mn segregation occurred in the inter-dendritic regions of the weld zone and Mn depletion thus occurred in the weld matrix. Although the stacking fault energy is expected to be lowered due to the Mn depletion, no noticeable change in the initial phase and deformation mechanism was found in the weld matrix. Lower hardness and strength were shown in the weld zone than the base metal, which was caused by the coarser grain size. The negative strain rate sensitivity observed in the weld zone and the base metal is considered to have originated from the negative strain rate dependency of twinning nucleation stress.

The Study of Type Twin Annealing in High Mn Steel

2011 ◽  
Vol 148-149 ◽  
pp. 1085-1088
Author(s):  
Gholam Reza Razavi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Grain Size ◽  
Room Temperature ◽  
Twip Steel ◽  
Manganese Steel ◽  
High Manganese ◽  
High Manganese Steel ◽  
Twip Steels ◽  
Mn Steel

TWIP steels are high manganese steel (Mn: 17% - 35%) which are used for shaping car bodies. The structure of this kind of steels remains austenite even in room temperature. Due to low SFE (Stacking Fault Energy) twinning of grains is governing reformation mechanism in this kind of steels which strengthen TWIP steel. Regarding heat treatment influences on mechanical properties of TWIP steels, in this paper we discuss twinning phenomenon resulting from this kind of treatment. For this, following casting and hot rolling processes, we anneal the steel at 1100°C and different time cycles and study its microstructure using light microscope. The results showed that with decreasing grain size the number of twin annealing added And four types of annealing twin in the microstructure, in the end they all become one twin and then turn into grain.

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