scholarly journals Dynamic alloying of high manganese steel

2020 ◽  
pp. 69-74
Author(s):  
E. I. Marukovich ◽  
S. M. Usherenko ◽  
A. A. Andrushevich ◽  
O. P. Reut ◽  
Javad Yazdani-Cherati
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Cast Steel ◽  
Dynamic Effect ◽  
Manganese Steel ◽  
High Manganese ◽  
High Manganese Steel ◽  
Superdeep Penetration ◽  
Powder Particles

The option of creating a composite material based on high manganese steel by the method of dynamic alloying in the superdeep penetration mode by flows of powder particles is considered. The dynamic effect of powdered microparticles on a matrix billet transforms the original cast steel into a composite material and leads to a change in mechanical properties.

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.

scholarly journals Microstructure of Cast High-Manganese Steel Containing Titanium

2016 ◽  
Vol 16 (4) ◽  
pp. 163-168 ◽  
Author(s):  
G. Tęcza ◽  
A. Garbacz-Klempka
Keyword(s):  
Heat Treatment ◽  
Solution Heat Treatment ◽  
Cast Steel ◽  
Mining Industry ◽  
Manganese Steel ◽  
Hadfield Steel ◽  
High Manganese ◽  
High Manganese Steel ◽  
The Matrix ◽  
Titanium Carbides

Abstract Widely used in the power and mining industry, cast Hadfield steel is resistant to wear, but only when operating under impact loads. Components made from this alloy exposed to the effect of abrasion under load-free conditions are known to suffer rapid and premature wear. To increase the abrasion resistance of cast high-manganese steel under the conditions where no dynamic loads are operating, primary titanium carbides are formed in the process of cast steel melting, to obtain in the alloy after solidification and heat treatment, the microstructure composed of very hard primary carbides uniformly distributed in the austenitic matrix of a hardness superior to the hardness of common cast Hadfield steel. Hard titanium carbides ultimately improve the wear resistance of components operating under shear conditions. The measured microhardness of the as-cast matrix in samples tested was observed to increase with the increasing content of titanium and was 380 HV0.02 for the content of 0.4%, 410 HV0.02 for the content of 1.5% and 510 HV0.02 for the content of 2 and 2.5%. After solution heat treatment, the microhardness of the matrix was 460÷480 HV0.02 for melts T2, T3 and T6, and 580 HV0.02 for melt T4, and was higher than the values obtained in common cast Hadfield steel (370 HV0.02 in as-cast state and 340÷370 HV0.02 after solution heat treatment). The measured microhardness of alloyed cementite was 1030÷1270 HV0.02; the microhardness of carbides reached even 2650÷4000 HV0.02.

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

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

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.

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