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Licensed Unlicensed Requires Authentication Published by De Gruyter November 24, 2023

Effects of compaction pressure on microstructure, mechanical properties, and machining characteristics of sintered AISI 316L steel

  • Mehmet Akif Erden

    Mehmet Akif Erden is a Professor Biomedical Engineering at Karabuk University, Turkey. His research interests focus on biomaterials, powder metallurgy, and alloyed PM steels.

    , Uğur Köklü

    Uğur Köklü (Corresponding Author) is currently a Professor at the Mechanical Engineering at Karamanoğlu Mehmetbey University, Turkey. His research work focuses on the mechanical drilling of metals and composite materials.

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    , Ahmet Serdar Güldibi

    Ahmet Serdar Güldibi is currently an Assistant Professor at the Manufacturing Engineering, Karabuk University, Turkey. His research work focuses on the machining of metals.

    and Muhammed Elitaş

    Muhammed Elitaş is currently an Assistant Professor at the Mechanical Engineering, Bilecik Şeyh Edebali University, Turkey. His research interests focus on welding and powder metallurgy.

From the journal Materials Testing

Abstract

In this study, the effect of compaction pressure on the properties of AISI 316L and its machining performance was evaluated. AISI 316L powders were subjected to three different compaction pressures (550, 650, and 750 MPa). Subsequently, the samples were sintered in an argon atmosphere at a constant temperature of 1523.15 K. The microstructure, hardness, and mechanical properties of the materials were investigated. To examine the effect of compaction pressure on drilling characteristics (thrust force, torque, surface roughness, chip formation, and burr formation), the samples were subjected to dry drilling at different feed rates and cutting speeds. It was observed that increasing the compaction pressure resulted in smaller grain sizes in the microstructure, increased hardness, and higher tensile strength. Higher compaction pressure led to higher thrust force and torque, whereas lower compaction pressure resulted in improved hole surface quality and shorter chips. Additionally, at higher cutting speeds, the color of the chips changed due to the elevated temperatures associated with increased cutting speeds.


Corresponding author: Uğur Köklü, Karamanoglu Mehmetbey Universitesi, Karaman, 70200, Türkiye, E-mail:

About the authors

Mehmet Akif Erden

Mehmet Akif Erden is a Professor Biomedical Engineering at Karabuk University, Turkey. His research interests focus on biomaterials, powder metallurgy, and alloyed PM steels.

Uğur Köklü

Uğur Köklü (Corresponding Author) is currently a Professor at the Mechanical Engineering at Karamanoğlu Mehmetbey University, Turkey. His research work focuses on the mechanical drilling of metals and composite materials.

Ahmet Serdar Güldibi

Ahmet Serdar Güldibi is currently an Assistant Professor at the Manufacturing Engineering, Karabuk University, Turkey. His research work focuses on the machining of metals.

Muhammed Elitaş

Muhammed Elitaş is currently an Assistant Professor at the Mechanical Engineering, Bilecik Şeyh Edebali University, Turkey. His research interests focus on welding and powder metallurgy.

  1. Research ethics: Not applicable.

  2. Author contributions: Mehmet Akif Erden carried out the manufacturing of the samples and manufacturing process. He is also responsible for microstructural examinations with Muhammed Elitaş. Uğur Köklü carried out machining experiments, measurements, evaluating chip formation and drill hole quality. Ahmet Serdar Güldibi carried out the hardness and tensile tests. Muhammed Elitaş carried out the whole organization, writing, evaluating, and designing of the paper. “The authors have accepted responsibility for the entire content of this manuscript and approved its submission.”

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: None declared.

  5. Data availability: Not applicable.

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Published Online: 2023-11-24
Published in Print: 2024-01-29

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