Material properties of cast aluminium alloys produced by various casting processes

Mitsuhiro Okayasu, Kohei Ota, Shuhei Takeuchi, Tetsuro Shiraishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The material and mechanical properties of cast aluminium alloys, produced using various casting technologies, have been investigated experimentally. In this study, several casting processes were selected, including gravity casting (GC), cold-chamber diecasting (CD), hot-chamber diecasting (HD), squeeze diecasting (SQ), twin rolled continuous casting (TRC) and heated mould continuous casting (HMC). Although all cast samples were made of the same aluminium alloy of Al-Si-Cu (ADC12), different material properties were obtained, in particular microstructural characteristics, crystal orientation and residual stress. In this instance, the microstructures of the GC and CD samples were formed mainly of coarse α-Al phase and needle-shaped eutectic structures; and a microstructure of fine round grain and tiny eutectic structures were observed for the HC, TRC and HMC samples. On the other hand, spherical shaped α-Al phase with a relatively large size was detected in SQ. The different microstructural characteristics led to different mechanical properties. A uniformly orientated lattice structure was detected in the HMC and SQ samples, which gave high material ductility. High internal compressive stress high dislocation density, arising from the rolling process, led to the high tensile properties for the TRC procedure. Various cast defects, such as blow holes and shrinkage porosity, were detected in GC and CD, which gave a reduction in their tensile properties.

Original languageEnglish
Title of host publicationLight Metals Technology 2013
PublisherTrans Tech Publications Ltd
Pages241-244
Number of pages4
ISBN (Print)9783037857663
DOIs
Publication statusPublished - Jan 1 2013
Externally publishedYes
Event6th International Light Metals Technology Conference, LMT 2013 - Old Windsor, United Kingdom
Duration: Jul 24 2013Jul 26 2013

Publication series

NameMaterials Science Forum
Volume765
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other6th International Light Metals Technology Conference, LMT 2013
CountryUnited Kingdom
CityOld Windsor
Period7/24/137/26/13

Keywords

  • Aluminium alloy
  • Casting
  • Mechanical properties
  • Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Okayasu, M., Ota, K., Takeuchi, S., & Shiraishi, T. (2013). Material properties of cast aluminium alloys produced by various casting processes. In Light Metals Technology 2013 (pp. 241-244). (Materials Science Forum; Vol. 765). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.765.241