Microstructure evolution of AlSi10Mg alloy in RAP process

İbrahim Tütük; Serhat Acar; Gökhan Özer; Kerem Altuğ Güler

doi:10.1515/mt-2024-0078

Article

Microstructure evolution of AlSi10Mg alloy in RAP process

İbrahim Tütük
İbrahim Tütük graduated with MSc degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul, Turkey in 2022. He is working as a researcher at Fatih Sultan Mehmet Vakif University. His main research areas are physical metallurgy, casting, and additive manufacturing.
, Serhat Acar
Dr. Serhat Acar graduated with PhD degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul, Turkey in 2023. He is working as a research assistant at Yildiz Technical University in the Department of Metallurgical and Materials Engineering. His main research areas are casting, aluminium alloys and physical metallurgy.
, Gökhan Özer
Dr. Gökhan Özer, graduated with PhD degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul. He is working as an associate professor at Fatih Sultan Mehmet Vakif University. His main research areas are physical metallurgy, casting, and additive manufacturing.
and Kerem Altuğ Güler
Prof. Dr. Kerem Altuğ Güler, graduated with PhD degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul. He is working as a professor at Yildiz Technical University in the Department of Metallurgical and Materials Engineering. His main research areas are casting, aluminum alloys and physical metallurgy.

Published/Copyright: October 28, 2024

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From the journal Materials Testing Volume 66 Issue 11

Abstract

With its computer-aided layer-by-layer production approach, additive manufacturing (AM) and powder bed laser fusion (PBLF) paved the way to produce metallic parts more precisely than any other manufacturing technique. However, the combinability and the interaction of this relatively new manufacturing technique with the other near-net shape production techniques is still a mystery. In this study, the recrystallization and partial melting (RAP) behavior, which is a feedstock production approach for semisolid forming methods, investigated on AlSi10Mg parts produced by PBLF and conventional casting were compared in terms of microstructural and hardness evaluations. After the reheating process, the globalization of Si particles and the breakdown of the Si network around the melt pools were displayed with light microscope and scanning electron microscope (SEM) images. The hardness values of the PBLF as-fabricated specimens were found to be significantly higher than the as-cast specimens; however, the values were almost equaled after the RAP treatment and even got lower on the bottom and top regions of the PBLF samples after 20 min of reheating because of the enlarged shrinkage porosities and the coarsened morphology.

Keywords: additive manufacturing; powder bed laser fusion; AlSi10Mg; recrystallization and partial melting

Corresponding author: İbrahim Tütük, Aluminium Test Education and Research Center (ALUTEAM), Fatih Sultan Mehmet Vakif Universitesi, Karaağaç caddesi, Sütlüce mahallesi, No: 12/A, Beyoğlu/İstanbul, 34445, İstanbul, Türkiye, E-mail: ibrahimttk55@gmail.com

About the authors

İbrahim Tütük

İbrahim Tütük graduated with MSc degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul, Turkey in 2022. He is working as a researcher at Fatih Sultan Mehmet Vakif University. His main research areas are physical metallurgy, casting, and additive manufacturing.

Serhat Acar

Dr. Serhat Acar graduated with PhD degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul, Turkey in 2023. He is working as a research assistant at Yildiz Technical University in the Department of Metallurgical and Materials Engineering. His main research areas are casting, aluminium alloys and physical metallurgy.

Gökhan Özer

Dr. Gökhan Özer, graduated with PhD degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul. He is working as an associate professor at Fatih Sultan Mehmet Vakif University. His main research areas are physical metallurgy, casting, and additive manufacturing.

Kerem Altuğ Güler

Prof. Dr. Kerem Altuğ Güler, graduated with PhD degree in Metallurgical and Materials Engineering from Yildiz Technical University, Istanbul. He is working as a professor at Yildiz Technical University in the Department of Metallurgical and Materials Engineering. His main research areas are casting, aluminum alloys and physical metallurgy.

Research ethics: Not applicable.
Informed consent: Not applicable.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.
Use of Large Language Models, AI and Machine Learning Tools: None declared.
Conflict of interest: All other authors state no conflict of interest.
Research funding: None declared.
Data availability: Not applicable.

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Published Online: 2024-10-28

Published in Print: 2024-11-26

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Articles in the same Issue

https://doi.org/10.1515/mt-2024-0078

Keywords for this article

additive manufacturing; powder bed laser fusion; AlSi10Mg; recrystallization and partial melting