Improvement of metallurgical properties of A356 aluminium alloy by AlCrFeSrTiBSi master alloy

Tanju Teker; Serdar Osman Yılmaz; Alper Karakoca

doi:10.1515/mt-2022-0407

Article

Improvement of metallurgical properties of A356 aluminium alloy by AlCrFeSrTiBSi master alloy

Tanju Teker
Prof. Dr. Tanju Teker, born in Sivas in 1971, works in Sivas Cumhuriyet University, Faculty of Technology, Department of Manufacturing Engineering, Sivas, Turkey. He graduated in Metallurgy Education from Gazi University, Ankara, Turkey, in 1997. He received his MSc and PhD degrees from Firat University, Elazig, Turkey in 2004 and 2010, respectively. His research interests metal coating techniques, casting, fusion and welding solid-state welding methods.
, Serdar Osman Yılmaz
Prof. Dr. Serdar Osman Yılmaz, born in Elazig in 1966, works in Tekirdag Namık Kemal University, Faculty of Engineering, Department of Mechanical Engineering, Corlu, Tekirdag, Turkey. He received his BSc from METU University, Ankara, Faculty of Engineering, Metallurgy and Materials Engineering Department in 1989, his MSc from the Institute of Science and Technology, Metallurgy Department in 1992 and his Ph.D from the University of Firat, Institute of Science and Technology, Metallurgy Department, Elazig, in 1998. He studied metal coating techniques, surface modification, welding, casting and wear.
and Alper Karakoca
Alper Karakoca, born in Manisa in 1990, works in Tekirdag Namik Kemal University, Faculty of Engineering, Department of Mechanical Engineering, Tekirdag, Turkey. He graduated in Mechanical Engineering from Istanbul Technical University, Istanbul, Turkey, in 2013. He received his MSc degrees from Tekirdag Namik Kemal University, Tekirdag, Turkey in 2017. His research interests aluminum cast alloys, thermomechanical processes.

Published/Copyright: February 3, 2023

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From the journal Materials Testing Volume 65 Issue 2

Abstract

A new AlCrFeSrTiBSi master alloy was manufactured by in situ synthesis in Al melt, and compared with AlBSr master alloy. Microstructures of A356 alloy modified with AlCrFeSrTiBSi master alloy were investigated, and the structural details of the new cast A356 alloy were evaluated by X-ray diffraction (XRD), optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), microhardness and differential thermal analysis (DTA). AlBSr master alloy typically formed α-Al and granular SrB₆ phases in A356, and the samples inoculated with AlCrFeSrTiBSi master alloy consisted of additionally AlCrFeSi phase with irregular blocks. The addition of 0.1 wt%AlCrFeSrTiBSi alloy to the A356 alloy significantly refined and modified the grain structure together. The structure of eutectic Si converted from acicular form to fibrous. The size of α-Al dendrites declined from ∼1000 μm to ∼100 μm. The strength values of the A356 alloy were developed by ∼70% with the addition of 0.1 wt%AlCrFeSrTiBSi master alloy.

Keywords: aging; aluminum alloy; metallurgical properties; microstructure

Corresponding author: Tanju Teker, Sivas Cumhuriyet University, Faculty of Technology, Department of Manufacturing Engineering, 58140, Sivas, Türkiye, E-mail: tanjuteker@cumhuriyet.edu.tr

About the authors

Tanju Teker

Prof. Dr. Tanju Teker, born in Sivas in 1971, works in Sivas Cumhuriyet University, Faculty of Technology, Department of Manufacturing Engineering, Sivas, Turkey. He graduated in Metallurgy Education from Gazi University, Ankara, Turkey, in 1997. He received his MSc and PhD degrees from Firat University, Elazig, Turkey in 2004 and 2010, respectively. His research interests metal coating techniques, casting, fusion and welding solid-state welding methods.

Serdar Osman Yılmaz

Prof. Dr. Serdar Osman Yılmaz, born in Elazig in 1966, works in Tekirdag Namık Kemal University, Faculty of Engineering, Department of Mechanical Engineering, Corlu, Tekirdag, Turkey. He received his BSc from METU University, Ankara, Faculty of Engineering, Metallurgy and Materials Engineering Department in 1989, his MSc from the Institute of Science and Technology, Metallurgy Department in 1992 and his Ph.D from the University of Firat, Institute of Science and Technology, Metallurgy Department, Elazig, in 1998. He studied metal coating techniques, surface modification, welding, casting and wear.

Alper Karakoca

Alper Karakoca, born in Manisa in 1990, works in Tekirdag Namik Kemal University, Faculty of Engineering, Department of Mechanical Engineering, Tekirdag, Turkey. He graduated in Mechanical Engineering from Istanbul Technical University, Istanbul, Turkey, in 2013. He received his MSc degrees from Tekirdag Namik Kemal University, Tekirdag, Turkey in 2017. His research interests aluminum cast alloys, thermomechanical processes.

Acknowledgments

The authors are grateful to the Turaş Gas Armatures Industry and Trade Inc. and Kayalar Copper Alloys Industry and Trade. Inc. for their assistance in conducting the experiments.

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: No potential conflict of interest was reported by the authors.

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Published Online: 2023-02-03

Published in Print: 2023-02-23

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Articles in the same Issue

https://doi.org/10.1515/mt-2022-0407

Keywords for this article

aging; aluminum alloy; metallurgical properties; microstructure