Computer simulation of mechanical properties and distortions during the quenching of steel

Smoljan, Božo; Iljkić, Dario; Hanza, Sunčana Smokvina; Jokić, Milenko; Štic, Lovro

doi:10.1088/1757-899x/400/4/042053

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…The lower face is cooled by a water jet, for the four specimens, the coefficient of transfer of heat is calculated starting from the equation (1) for a coefficient of Prandtl equal to 1, according to Bejan and Kraus [9]. The others faces are cooled by natural convection of the air; we have two cases who present ourselves, that is to say, the faces are horizontal and the coefficient of transfer of heat is calculated with the equation (2); or the faces vertical and one uses the equation (3), the formulas are drawn from the book Heat Transfer Handbook de Bejan and Kraus [17].…”

Section: Boundary and Initial Conditionsmentioning

confidence: 99%

“…Qamar [8] presented a tool to assess hardenability by simulating with a CFD method while using estimates of the heat transfer rate, the cooling rate was found to be sensitive to the water jet speed. Smoljan et al [9] developed a mathematical model for the simulation of mechanical properties during quenching, mechanical properties were predicted taking into account their dependence on temperature, the model was able to simulate 3D parts, such as complex cylinders, cones, and spheres.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Thermal Barriers on the Martensitic Transformation in a Bar Jominy

Rezini,

Baki

2023

Strojnícky Časopis - Journal of Mechanical Engineering

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The shape and geometry of a part influence the cooling behavior during a martensitic transformation; an experimental study carried out on a control Jominy bar was compared with other bars fitted with one, two, and three slots; the results show differences in hardness along the specimen, the hardness with a slit and more is greater than the hardness on a sample without a slit, this is valid on the cooled side of the specimen, the further away from the side cooled plus the difference is minimal; the study was completed with a simulation on bars with and without slits, the results of the temperature contours show an acceleration of the cooling on the cooled side of the bars provided with slits; far from the cooled face the influence of the slits is weak.

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Section: Boundary and Initial Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Barriers on the Martensitic Transformation in a Bar Jominy

Rezini,

Baki

2023

Strojnícky Časopis - Journal of Mechanical Engineering

View full text Add to dashboard Cite

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Plasma-induced destruction of Candida albicans cell wall components: A reactive molecular dynamics simulation

Wang

Pang

Zou

et al. 2021

Biochemical and Biophysical Research Communications

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ReaxFF-based molecular dynamics simulation of DNA molecules destruction in cancer cells by plasma ROS

et al. 2019

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Medical applications of plasma have been a hot topic of research recently. Studies have shown that cold atmospheric pressure plasma (CAP) plays a beneficial role in cancer treatments and can selectively kill cancer cells. Some reactive oxygen species (ROS) in plasma react with cancer cells, altering the cellular structure and inducing apoptosis. Currently, however, it is difficult to determine the microscopic mechanism of the reaction between plasma and cancer cells. In this work, a reactive force field was used to model the deoxyribonucleic acid (DNA) damage caused by three ROS (O, OH, and H2O2) at the atomic level. The simulation showed that the ROS of CAP reacted with the DNA of cancer cells, breaking important chemical bonds in DNA molecules and damaging the genes of cancer cells. Therefore, the reaction between ROS and DNA molecules affects gene transcription, replication, and reproduction of cancer cells and inhibits their unlimited proliferation. O atoms, OH radicals, and H2O2 can damage DNA molecules at different structural positions, causing major irreversible damage to the molecular structure of the DNA.

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Computer simulation of mechanical properties and distortions during the quenching of steel

Cited by 3 publications

References 11 publications

Effect of Thermal Barriers on the Martensitic Transformation in a Bar Jominy

Effect of Thermal Barriers on the Martensitic Transformation in a Bar Jominy

Plasma-induced destruction of Candida albicans cell wall components: A reactive molecular dynamics simulation

ReaxFF-based molecular dynamics simulation of DNA molecules destruction in cancer cells by plasma ROS

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