Effect of Cu Content and Growth Velocity on the Microstructure Properties of the Directionally Solidified Al-Mn-Cu Ternary Alloys

Authors

  • Uğur BÜYÜK Erciyes University, Faculty of Education, Department of Science Education
  • Emin ÇADIRLI Niğde Ömer Halisdemir University, Faculty of Arts and Sciences, Department of Physics
  • Hasan KAYA Erciyes University, Faculty of Education, Department of Science Education
  • M. İzzettin YILMAZER Erciyes University, Faculty of Education, Department of Science Education

DOI:

https://doi.org/10.38063/ejons.490

Keywords:

Aluminum alloys, Solidification, Cell-dendritic transition, Dendrite arm spacing

Abstract

In this work, influences of composition (Cu content) and growth velocity (V) on the microstructure (dendritic spacing) of Al–Mn–Cu ternary alloys have been investigated. Al–1.9Mn–xCu (x=0.5, 1.5 and 5 wt. %) alloys were prepared using metals of 99.90% high purity in the vacuum atmosphere. These alloys were directionally solidified upwards under various growth velocities (8.3–978 ?m/s) using a Bridgman-type directional solidification furnace at a constant temperature gradient (7.1 K/mm). Measurements of primary dendrite arm spacing (??) of the samples were carried out and then expressed as functions of growth velocity and Cu content. Especially, cell-dendritic transition was detected for low growth velocity (41.6 ?m/s) for alloys containing 0.5 and 1.5Cu. It has been found that the values of???decrease with increasing V and decreasing Cu content.

Published

2021-12-20

How to Cite

BÜYÜK, U., ÇADIRLI, E., KAYA, H., & YILMAZER, M. İzzettin. (2021). Effect of Cu Content and Growth Velocity on the Microstructure Properties of the Directionally Solidified Al-Mn-Cu Ternary Alloys. EJONS INTERNATIONAL JOURNAL, 5(20), 756–764. https://doi.org/10.38063/ejons.490