Refinement of Al-Si eutectic grains - A novel method to produce high integrity Al-Si alloy castings

Liming Lu, Kazuhiro Nogita, Arne K. Dahle

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

1 Citation (Scopus)

Abstract

Eutectic modification with Sr, Na or Sb yields a refined fibrous silicon morphology which can improve the tensile ductility of cast Al-Si alloys. However, many companies choose not to use modifiers due to increased scrap rates and negligible beneficial effects on the mechanical properties because of alterations in the porosity characteristics of the castings. Here we report a novel method to modify Al-Si alloys which reduces the porosity of the castings while maintaining the well-modified silicon structure, thus producing consistent high performance Al-Si alloy castings. This new invention is based on the grain refinement of the Al-Si eutectic grains, or cells.

Original languageEnglish
Title of host publicationLight Metals 2007 - Proceedings of the Technical Sessions presented by the TMS Aluminum Committee at the TMS 2007 Annual Meeting and Exhibition
Pages697-702
Number of pages6
Publication statusPublished - Aug 20 2007
EventTMS 2007 Annual Meeting and Exhibition - Orlando, FL, United States
Duration: Feb 25 2007Mar 1 2007

Other

OtherTMS 2007 Annual Meeting and Exhibition
CountryUnited States
CityOrlando, FL
Period2/25/073/1/07

Fingerprint

eutectics
integrity
Eutectics
Silicon
Porosity
porosity
scrap
inventions
Grain refinement
Patents and inventions
silicon
ductility
Ductility
casts
mechanical properties
Mechanical properties
cells
Castings
Industry

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry

Cite this

Lu, L., Nogita, K., & Dahle, A. K. (2007). Refinement of Al-Si eutectic grains - A novel method to produce high integrity Al-Si alloy castings. In Light Metals 2007 - Proceedings of the Technical Sessions presented by the TMS Aluminum Committee at the TMS 2007 Annual Meeting and Exhibition (pp. 697-702)

Refinement of Al-Si eutectic grains - A novel method to produce high integrity Al-Si alloy castings. / Lu, Liming; Nogita, Kazuhiro; Dahle, Arne K.

Light Metals 2007 - Proceedings of the Technical Sessions presented by the TMS Aluminum Committee at the TMS 2007 Annual Meeting and Exhibition. 2007. p. 697-702.

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

Lu, L, Nogita, K & Dahle, AK 2007, Refinement of Al-Si eutectic grains - A novel method to produce high integrity Al-Si alloy castings. in Light Metals 2007 - Proceedings of the Technical Sessions presented by the TMS Aluminum Committee at the TMS 2007 Annual Meeting and Exhibition. pp. 697-702, TMS 2007 Annual Meeting and Exhibition, Orlando, FL, United States, 2/25/07.
Lu L, Nogita K, Dahle AK. Refinement of Al-Si eutectic grains - A novel method to produce high integrity Al-Si alloy castings. In Light Metals 2007 - Proceedings of the Technical Sessions presented by the TMS Aluminum Committee at the TMS 2007 Annual Meeting and Exhibition. 2007. p. 697-702
Lu, Liming ; Nogita, Kazuhiro ; Dahle, Arne K. / Refinement of Al-Si eutectic grains - A novel method to produce high integrity Al-Si alloy castings. Light Metals 2007 - Proceedings of the Technical Sessions presented by the TMS Aluminum Committee at the TMS 2007 Annual Meeting and Exhibition. 2007. pp. 697-702
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