Application of Atomic Force Microscopy for Stainless Steel Microstructure Study at Various Kinds of Heat Treatment

Shlyakhova, G. V.; Bochkareva, A. V.; Баранникова, С. А.; Зуев, Л. Б.; Martusevich, E. V.

doi:10.17073/0368-0797-2017-2-133-139

Cited by 2 publications

(4 citation statements)

References 5 publications

(5 reference statements)

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“…The horizontal samples had higher cooling rates during the manufacturing process; therefore, they formed a more uniform distribution of needle-like martensite. The microstructure of the printed samples is similar to the microstructure of the 40 × 13 steel after quenching and low tempering [28,29]. Figure 10a,b shows the martensite with a needle-like structure.…”

Section: Study Of the Microstructure And Microhardness Of The Printed...mentioning

confidence: 57%

“…The microstructure of the printed samples is similar to the microstructure of the 40 × 13 steel after quenching and low tempering [ 28 , 29 ]. Figure 10 a,b shows the martensite with a needle-like structure.…”

Section: Study Of the Influence Of The Modes For Obtaining Samples Vi...mentioning

confidence: 99%

“…As a result, the hardness of these samples turned out to be lower. The hardness values of the obtained samples correspond to the hardness of the 40 × 13 steel after quenching and low tempering (HRC50-55) [ 28 , 29 ].…”

Section: Study Of the Influence Of The Modes For Obtaining Samples Vi...mentioning

confidence: 99%

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Production of Workpieces from Martensitic Stainless Steel Using Electron-Beam Surfacing and Investigation of Cutting Forces When Milling Workpieces

Martyushev

Kozlov

et al. 2023

Materials

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The aim of this study was to investigate cutting force when milling 40 × 13 stainless steel samples obtained via electron-beam surfacing. The samples were obtained by surfacing the wire made from the martensitic 40 × 13 stainless steel. The microstructure of the samples and the hardness are discussed in the present study. Emphasis is placed on the study of cutting forces when handling the samples. The structure of the samples obtained by electron-beam surfacing consisted of tempered martensite. The average hardness of the samples was similar to the hardness obtained after quenching and tempering the samples—576 HV for horizontally printed workpieces and 525 HV for vertically printed workpieces. High-speed milling, high-efficiency milling, and conventional milling have been proven to be suitable for handling such workpieces. This study shows that an increase in milling width leads to a gradual decrease in specific cutting force. As the milling depth increases, the specific cutting force decreases intensively at first but then more slowly with time. Machining the workpieces made of the martensitic stainless steel and produced by electron-beam surfacing requires the use of purely carbide mills with a diameter of at least 12 mm. Using a high-speed steel as a tool material results in the rapid failure of the tool. The cutting conditions during the investigation allowed for a decrease in the temperature of the cutting edge, cutting force, and the low-rigid end mill bending. Therefore, this study has made it possible to select modes that allow for a reduction in the vibration of the lathe-fixture-tool-part system.

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Section: Study Of the Microstructure And Microhardness Of The Printed...mentioning

confidence: 57%

Section: Study Of the Influence Of The Modes For Obtaining Samples Vi...mentioning

confidence: 99%

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Production of Workpieces from Martensitic Stainless Steel Using Electron-Beam Surfacing and Investigation of Cutting Forces When Milling Workpieces

Martyushev

Kozlov

et al. 2023

Materials

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“…На межслоевых границах отсутствуют трещины, и граница расплавленной ванны также отсутствует. Микроструктура изготовленных образцов аналогична микроструктуре стали 40X13 после закалки и низкого отпуска [29][30][31][32][33]. Мартенсит имеет игольчатое строение.…”

Section: исследование микроструктуры напечатанных образцовunclassified

Milling martensitic steel blanks obtained using additive technologies

Martyushev,

Kozlov,

et al. 2023

Metal Working and Material Science

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Introduction. In recent years, more attention has been paid to additive wire printing technologies. Due to the peculiarities of printing with wire, the hardness of the workpiece is significantly higher than with traditional forging. An increase in hardness leads to an increase in cutting force. The aim of the work is to study the cutting force during milling workpieces of stainless steel 0.4 C-13 Cr obtained by electron-beam surfacing. Research Methods The specimens were obtained by surfacing wire from martensitic stainless steel 0.4 C-13 Cr. The microstructure of the specimens was studied in this work. The main attention was paid to the study of cutting forces during the processing of specimens. The work investigate specimens obtained by electron-beam surfacing with 0.4 C-13 Cr steel wire. The cutting forces arising during milling of these specimens are determined. To carry out the research work, a standard methodology for conducting experiments to determine cutting forces was chosen. However, to determine the forces Pz and Py, a four-flute (z = 4) milling cutter was used and the milling width was less than 2 mm. Results and discussion. The structure of the specimens obtained by electron-beam surfacing is tempered martensite. It is established that high-speed milling, high-efficiency milling and conventional milling are suitable for processing such workpieces. For processing thin-walled workpieces made of martensitic stainless steel after its manufacture by the method of electron-beam surfacing, it is necessary to use only carbide cutters with a diameter of at least 12 mm. The cutting modes obtained in the study make it possible to reduce the temperature of the cutting edge, cutting force and bending of a low-rigid end mill. So, in the course of the study, it was possible to select modes that reduce the vibration of the machine-device-tool-part system.

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Application of Atomic Force Microscopy for Stainless Steel Microstructure Study at Various Kinds of Heat Treatment

Cited by 2 publications

References 5 publications

Production of Workpieces from Martensitic Stainless Steel Using Electron-Beam Surfacing and Investigation of Cutting Forces When Milling Workpieces

Production of Workpieces from Martensitic Stainless Steel Using Electron-Beam Surfacing and Investigation of Cutting Forces When Milling Workpieces

Milling martensitic steel blanks obtained using additive technologies

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