Master alloy for modification and grain refining of hypoeutectic and eutectic alloys Al-Si casting.

摘要

A master alloy for modification and refining grain casting alloys, hypoeutectic and eutectic, containing Al-Si as an essential element, which contains, in addition to unavoidable contaminants, nucleating additions and Modifier Ti, B and Sr, characterized in that Ti content is between 0, 5 and 2, 0% by weight, the content of B is between 0, 5 and 2, 0% by weight, the content of Sr is between 3 0 and 12 0% by weight and a Ti / B ratio that is between 0, 8 and 1, 4.