| Title: | Effect of Ti and S content on the properties and machinability of low-carbon ferritic–pearlitic steel |
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| Authors: | ID Arh, Boštjan (Author)
ID Tehovnik, Franc (Author)
ID Vode, Franci (Author)
ID Podgornik, Bojan (Author) |
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| Files: |  PDF - Presentation file, download (12,95 MB)
MD5: 01C4871825692633D7B1051AD1C1CC77
 URL - Source URL, visit https://www.mdpi.com/2075-4701/14/9/977
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IMT - Institute of Metals and Technology
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| Abstract: | This research was focused on the effect of Ti and S content on the formation of non-metallic inclusions and their influence on the mechanical properties and machinability of low-carbon ferritic– pearlitic steels. An analysis and classification of the non-metallic inclusions were carried out. The tensile strength and impact toughness were determined from samples taken in the rolling direction. Machinability investigations were carried out on a CNC turning machine and by analyzing the surface roughness. TiO-TiN inclusions are present in steels with an increased Ti content. In these steels, the hardness, tensile strength, and cutting forces increase with a higher proportion of Ti. In the second group of steels with increased contents of S, Al, and Ca, MnS and CaO-Al2O3-MnS non-metallic inclusions are formed. As the S content increases, the tensile strength and cutting forces decrease, while the impact toughness increases. In steels with added Ti, the This research was focused on the effect of Ti and S content on the formation of non-metallic inclusions and their influence on the mechanical properties and machinability of low-carbon ferritic– pearlitic steels. An analysis and classification of the non-metallic inclusions were carried out. The tensile strength and impact toughness were determined from samples taken in the rolling direction. Machinability investigations were carried out on a CNC turning machine and by analyzing the surface roughness. TiO-TiN inclusions are present in steels with an increased Ti content. In these steels, the hardness, tensile strength, and cutting forces increase with a higher proportion of Ti. In the second group of steels with increased contents of S, Al, and Ca, MnS and CaO-Al2O3-MnS non-metallic inclusions are formed. As the S content increases, the tensile strength and cutting forces decrease, while the impact toughness increases. In steels with added Ti, the machining is more difficult, but a finer surface is achieved after turning, while a higher S content results in an increased fraction of softer sulfide inclusions, which reduce the cutting forces but also result in a reduced surface quality. turning, while a higher S content results in an increased fraction of softer sulfide inclusions, which reduce the cutting forces but also result in a reduced surface quality. |
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| Keywords: | non-metallic inclusions, mechanical properties, machinability, surface roughness |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 28.08.2024 |
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| Publisher: | MDPI |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-16 |
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| Numbering: | Vol. 14, iss. 9 |
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| Source: | Švica |
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| PID: | 20.500.12556/DiRROS-20314  |
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| UDC: | 620.1 |
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| ISSN on article: | 2075-4701 |
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| DOI: | 10.3390/met14090977 |
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| COBISS.SI-ID: | 206205699 |
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| Copyright: | © 2024 by the authors |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 3. 9. 2024;
Št. članka: 977;
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| Publication date in DiRROS: | 03.09.2024 |
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| Views: | 260 |
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| Downloads: | 449 |
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