Cooling Rate Effect Study on the Microstructure and Hardness of Hypereutectic Aluminum Al-18%Si Elaborated by V-process
Journal Title: INTERNATIONAL JOURNAL OF ENGINEERING TRENDS AND TECHNOLOGY - Year 2014, Vol 7, Issue 2
Abstract
The solidification process significantly affects the microstructure and mechanical properties of molding workpiece, and there are numerous factors that affect this process. Much progress has been made in the research on the solidification effect on microstructure and mechanical properties. This study deals with the solidification in V-process, the main studied parameter is the massively cooling rate effect on the microstructure and hardness. The experimental study shows that when the surface is small, the solidification rate is higher and the microstructure is more refined than when the surface is large. However, the cooling rate is very important in the case of small section; it reaches a maximum value that equals to 5°C / s; with this rate, the average hardness value rises to 51.97 (HRA).
Authors and Affiliations
C. El akili , M. alami , A. bouayad
Keywords
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