Consideration is given to the solidification of a typical hypoeutectic alloy
, containing 7% silicon.
Figure 1b shows regularly-shaped graphite flakes in a hypoeutectic alloy
with high C content.
The Role of Iron in the Nucleation of Eutectic Silicon in Aluminum-Silicon Hypoeutectic Alloys
As part of a larger program to establish statistically validated mechanical properties for E357-T6 sand castings, this weld repair study was designed to consolidate industry best practices to establish an AFS Recommended Practice for the in-process weld repair of aluminum-silicon hypoeutectic alloys
, develop mechanical properties to demonstrate the efficacy of the practice, and develop statistical data that facilitates acceptance of the weld practice.
The research team will develop a practice for in-process weld repair of aluminum-silicon hypoeutectic alloys
, track the mechanical properties to demonstrate the effectiveness of the practice and provide a statistical basis for acceptance.
For hypoeutectic alloys
, liquidus (TL) should have a well-defined plateau indicating dendritic growth.
In aluminum-silicon (Al-Si) hypoeutectic alloys
, strontium is often added for modification of the Si structure during the alloying process.