Microstructural changes of aluminium alloy A319 on cooling slope plate

Ahmad Muhammad Aziz, Mohd. Zaidi Omar, Zainuddin Sajuri, Mohd Shukor Salleh

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The cooling slope (CS) casting process is one of the simplest methods for producing a non-dendritic microstructure. To more clearly determine how this microstructure is formed, specifically in A319, requires an examination of how the dendritic microstructure evolves along the entirety of the CS plate. Yet until now, there are still unclear on the verification of microstructures changes on the CS plate. Based on experimental results, this paper offers an explanation for the mechanism involved in producing a nearly globular microstructure in A319. In addition, the mechanism is verified by using the planimetry method. Moreover a quantitative method is used to determine the grain size and shape factor to provide further support for the proposed mechanism. The solid fraction of α-Al at the impact zone is 70% which is the highest compared to other zones. Grain size and shape factor shown a decreasing and increasing value respectively from the impact zone until the bottom zone.

Original languageEnglish
Pages (from-to)121-127
Number of pages7
JournalJurnal Teknologi
Volume78
Issue number6-9
DOIs
Publication statusPublished - 2016

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Aluminum alloys
Cooling
Microstructure
Grain size and shape
Casting

Keywords

  • Evolution
  • Semi-solid processing
  • Solid fraction

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Microstructural changes of aluminium alloy A319 on cooling slope plate. / Aziz, Ahmad Muhammad; Omar, Mohd. Zaidi; Sajuri, Zainuddin; Salleh, Mohd Shukor.

In: Jurnal Teknologi, Vol. 78, No. 6-9, 2016, p. 121-127.

Research output: Contribution to journalArticle

Aziz, Ahmad Muhammad ; Omar, Mohd. Zaidi ; Sajuri, Zainuddin ; Salleh, Mohd Shukor. / Microstructural changes of aluminium alloy A319 on cooling slope plate. In: Jurnal Teknologi. 2016 ; Vol. 78, No. 6-9. pp. 121-127.
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