Role of trace nanoparticles in manipulating the widmanstatten structure of low carbon steel

Wang, Bingxu; Qiu, Feng; Cai, Gaoshen; Cui, Weiwei; Hu, Zirui; Zhang, He; Tyrer, Na; Barber, Gary C.

doi:10.1016/j.matlet.2021.130853

Cited by 15 publications

(9 citation statements)

References 8 publications

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“…However, based on studies using only a light microscope, its role in morphology has not yet been determined. It can only be assumed that due to the probable presence of coniferous ferrite in these areas, the microstructure will be bainitic [ 26 , 27 , 28 , 29 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

“…The measured differences in microhardness were a consequence of the joining process used: manual, CMT, laser, and solid and flux-cored wire. Moreover, for the MAG 135 and 138 processes, in which the additional material was used, the difference in the recorded microhardness values was caused by the different content of Si and Mn, which influenced the solution hardening resulting in the increase in microhardness [ 28 , 29 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

“…Large temperature gradients accompanying heating by the laser beam, combined with the variability of the amount of energy at a given point of the joint, can cause a very rapid temperature increase and subsequent rapid cooling [ 34 ]. Bearing in mind that the acceleration of the rate of temperature changes also causes a change in the temperature at which the phase changes take place, it is also possible to consider the variant that there is no typical kinetics of changes in the HAZ, and it is possible not to obtain a regular austenite grain at the HAZ showing low hardness [ 28 , 29 , 30 , 34 ]. In addition, the analyzed material is cold-rolled steel, and therefore contains a high density of dislocation, which allows us to analyze the possibility of healing or even recrystallization processes in a more classic approach.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the analyzed material is cold-rolled steel, and therefore contains a high density of dislocation, which allows us to analyze the possibility of healing or even recrystallization processes in a more classic approach. Of course, it should be noted that high-strain recrystallization leads to grain refinement, and, thus, material strengthening, and requires thermodynamic conditions for nucleation and new grain growth, which may be difficult to achieve with rapidly changing processes [ 26 , 27 , 28 , 29 , 30 ]. Verification of the indicated hypotheses is possible through more detailed microstructure studies, especially with the use of transmission electron microscopy (TEM), which is planned at the next stages of the research.…”

Section: Resultsmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Joints Depending on the Process Used

et al. 2022

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Today, numerous design solutions require joining thin-walled sheets or profiles as the traditional methods of welding with a consumable electrode in gas shielding, most often used in production processes, do not work well. The reason for this is that a large amount of heat is supplied to the joint, causing numerous welding deformations, defects, and incompatibilities. Moreover, the visual aspect of the connections made more and more often plays an equally crucial role. Therefore, it is important to look for solutions and compare different joining processes in order to achieve production criteria. The paper compares the properties of a 1.5 mm thick steel sheet joined by the manual and robotic MAG 135 and 138 welding process, manual and robotic laser welding, CMT welding with the use of solid or flux-cored wire, and butt welding. The macro- and microstructure, as well as the microhardness distribution of individual regions of the joints, were analyzed depending on the type of joining technology used. Furthermore, the mechanical properties of individual zones of joints were investigated with the use of a digital image correlation system. On the basis of the obtained test results, it was found that the joints made by the processes of manual laser welding and butt welding were characterized by a very regular weld shape, the smallest joint width, and greater grain refinement compared to other analyzed processes. Moreover, this method was characterized by the narrowest zone of hardness increase, only 3 mm, compared to, e.g., a joint made in the process of robotic welding CMT, for which this zone was more than twice as wide. Furthermore, the heat-affected zone for the joints made in this way, in relation to the welds produced by the MAG 135/138 method, was, respectively, 2 and 2.7 times smaller.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Joints Depending on the Process Used

et al. 2022

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“…However, it is difficult to add nanoparticles to liquid steel [35,47,61,62] due to the large specific gravity difference between liquid steel and nanoparticles [63][64][65][66][67]. Nanoparticles easily adsorb contamination and thus affect the strengthening effect [68,69].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Wear Resistance on H13 Tool and Die Steels by Trace Nanoparticles

Kou

Dai

Wang

et al. 2022

Metals

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In order to improve the impact toughness and wear resistance of the tool and die steels, this study innovatively prepared strengthened H13 steels with different contents of single-phase TiC and dual-phase TiC + TiB2 through in situ nanoparticle/Al master alloys at room temperature. The microstructure evolution and mechanical properties as well as wear resistance were investigated. Results indicate that the H13 steel with 0.02 wt.% dual-phase TiC + TiB2 nanoparticles has a more uniform and finer microstructure, and the mechanical properties and wear resistance are significantly improved. The yield strength, maximum tensile strength, breaking strain, uniform elongation, product of strength plasticity, and unnotched and U-notched impact toughness of H13 steel with 0.02 wt.% dual-phase TiC + TiB2 are higher than that of H13 steel. In addition, the volume wear rate, maximum scratch depth and width reach 7.1 × 10−11 m3/m, 6050 nm and 90 μm, respectively, which are reduced by 44.5%, 30.1% and 45.5% compared with that of H13 steel. Refining the microstructure and improving impact toughness and wear resistance of H13 tool steel through trace nanoparticles can provide important inspiration for industrial applications.

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Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB₂ Particles

Zhang,

Wang,

Qiu

et al. 2023

Adv Eng Mater

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Herein, nanoparticle‐reinforced carbon steels are innovatively prepared through the use of TiC‐TiB2/Al master alloys. The effects of nanoparticles on the microstructure and wear performance of carbon steels are investigated. It is found that the addition of nanoparticles inhibits the Widmanstatten structure. Also, the nanoparticles promote the formation of pearlite with finer lamellar structure and reduce the grain size. During the liquid–solid and solid–solid phase transformations, the nanoparticles act as heterogeneous cores to improve the nucleation rate. For wear tests, the presence of nanoparticles enhances the wear resistance of carbon steels. Carbon steels with 0.02 wt% nanoparticles show the lowest wear volume loss rate under each test condition. The excellent wear performance is related to the high hardness of substrates, inhibiting dislocation movement due to the refined microstructure and nanoparticles, and withstanding the external loads by nanoparticles. The findings obtained in this work can provide a new approach to fabricate high‐wear‐resistant carbon steels.

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Role of trace nanoparticles in manipulating the widmanstatten structure of low carbon steel

Cited by 15 publications

References 8 publications

Microstructure and Mechanical Properties of Joints Depending on the Process Used

Microstructure and Mechanical Properties of Joints Depending on the Process Used

Enhancement of Wear Resistance on H13 Tool and Die Steels by Trace Nanoparticles

Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB₂ Particles

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Role of trace nanoparticles in manipulating the widmanstatten structure of low carbon steel

Cited by 15 publications

References 8 publications

Microstructure and Mechanical Properties of Joints Depending on the Process Used

Microstructure and Mechanical Properties of Joints Depending on the Process Used

Enhancement of Wear Resistance on H13 Tool and Die Steels by Trace Nanoparticles

Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB2 Particles

Contact Info

Product

Resources

About

Dry Sliding Wear Properties of Annealed Carbon Steels Matrix Composites by Nanosized TiC‐TiB₂ Particles