Influence of continuous casting speeds on cast microstructure and mechanical properties of an ADC14 alloy

Yoon Seok Lee, Yuya Makino, Jun Nitta, Eunkyung Lee

Research output: Contribution to journalArticle

Abstract

To improve the mechanical properties of the casting alloys, various attempts have been made to use alternative casting technologies. The Ohno continuous casting (OCC) process is a unidirectional solidification method, which leads to high-quality cast samples. In this study, the Al- Si-Cu-Mg alloy was cast at casting speeds of 1 mm/s, 2 mm/s, and 3 mm/s, by the OCC process. The aim of this study is to investigate the effects of the casting process parameters, such as casting speeds and cooling conditions, on the crystallization characteristics and mechanical properties of OCC-Al- Si-Cu-Mg alloy. Particularly, secondary dendrite arms spacing of α-Al dendrites in OCC samples significantly decreases with increasing casting speed. Moreover, the mean tensile strength of the samples, produced at the highest casting speed of 4.0 mm/s, is significantly higher than that for the samples produced at a casting speed of 1.0 mm/s.

Original languageEnglish
Article number625
JournalMetals
Volume10
Issue number5
DOIs
Publication statusPublished - May 2020

Keywords

  • Aluminum alloy
  • Casting speed
  • Dendritic spacing
  • Gravity casting
  • Ohno continuous casting
  • Solidification

ASJC Scopus subject areas

  • Materials Science(all)

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