Details

Title

Utilization of Heat Treatment Aimed to Spheroidization of Eutectic Silicon for Silumin Castings Produced by Squeeze Casting

Journal title

Archives of Foundry Engineering

Yearbook

2012

Numer

No 1

Publication authors

Keywords

heat treatment ; Silicon spheroidization treatment ; Casting with crystallization under pressure (Direct squeeze casting) ; Hypoeutectic aluminium alloy

Divisions of PAS

Nauki Techniczne

Description

Archives of Foundry Engineering continues the publishing activity started by Foundry Commission of the Polish Academy of Sciences (PAN) in Katowice in 1978. The initiator of it was the first Chairman Professor Dr Eng. Wacław Sakwa – Corresponding Member of PAN, Honorary Doctor of Czestochowa University of Technology and Silesian University of Technology. This periodical first name was „Solidification of Metals and Alloys” , and made possible to publish the results of works achieved in the field of the Basic Problems Research Cooperation. The subject of publications was related to the title of the periodical and concerned widely understand problems of metals and alloys crystallization in a casting mold. In 1978-2000 the 44 issues have been published. Since 2001 the Foundry Commission has had patronage of the annually published “Archives of Foundry” and since 2007 quarterly published “Archives of Foundry Engineering”. Thematic scope includes scientific issues of foundry industry:

  • Theoretical Aspects of Casting Processes,
  • Innovative Foundry Technologies and Materials,
  • Foundry Processes Computer Aiding,
  • Mechanization, Automation and Robotics in Foundry,
  • Transport Systems in Foundry,
  • Castings Quality Management,
  • Environmental Protection.

Abstract

This paper describes the possibility of using very short periods of solution annealing in the heat treatment of unmodified hypoeutectic silumin alloy AlSi7Mg0,3 casted by method of casting with crystallization under pressure with forced convection (direct squeeze casting process). Castings prepared at different casting parameters were subjected to special heat treatment called SST (Silicon Spheroidization Treatment), which were originally used only for the modified silumin alloys to spheroidization of eutectic silicon. Temperature holding time in solution annealing of T6 heat treatment is limited in the SST process to only a few minutes. It was studied the effect of casting parameters and periods of solution annealing on ultimate strength, yield strength, and especially ductility that in the unmodified silumin alloy castings is relatively low.

Publisher

The Katowice Branch of the Polish Academy of Sciences

Date

2012

Type

Artykuły / Articles

Identifier

ISSN 2299-2944

References

Woehrer J. (2003), Thixoforming - Premium Components Made From Aluminum Alloys by the Billet Route, Die Casting Engineer, 110. ; Wendinger B. (2004), Thixoforming - Serial Parts and New Opportunities for High Ductile Application, null. ; Batyšev A. (1990), Crystalization of Metals and Alloys Under Pressure, Metallurgija. ; Stanček, L. (1990). Influence of Aluminum Alloys Solidification by Pressure. Final Report of the Subtask in National Plan of Basic Research No. III-I-4-02-06. Bratislava. (in Slovak). ; Stanček L. (2007), Instrument for Casting with Crystallization Under Pressure with Increasing of Flow Intensity, null. ; Chai G. (1992), Some Factors Affecting the Modification of Aluminium Silicon Alloys by Addition of Strontium Containing Master Alloys, AFS Transaction's Society, 100, 92. ; NADCA Product Specification Standards for Die Castings Produced by the Semi-Solid and Squeeze Casting Processes. (1999). NADCA Publication #403. (2<sup>nd</sup> ed.). Rosemont, Illinois.

DOI

10.2478/v10266-012-0021-1

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