Microstructural Feature of As-cast A-356 Alloy Modifiers with the Addition of SrO
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2014年第3期
论文作者：Equihua Fabián García Adrián
文章页码：617 - 619
摘 要：To explore the effect of strontium on the structure of as-cast A356 alloy, the strontium was incorporated to the alloy by metallothermic reduction of SrO where the mineral was added to the melt through the submerged powders injection technique. The evaluation of the modifi cation of the eutectic silicon and the chemical analysis of samples were done using optical microscopy（OP） and inductively coupled plasma（ICP）, respectively, while microstructural analyses by scanning electron microscopy（SEM）, and the injection time was variable. Magnesium was added to the melt to increase the reactivity and reduce the surface tension of the molten aluminum. It was possible to increase the strontium content from 0 to 0.027% after 20 minutes treatment. This concentration was suffi cient to bring about full modifi cation structure of eutectic silicon of as cast alloy A 356 and the acceptable quality metallurgical of alloy.
Equihua Fabián5，García Adrián5
5. FIME Autonomous University of Coahuila Unit
摘 要：To explore the effect of strontium on the structure of as-cast A356 alloy, the strontium was incorporated to the alloy by metallothermic reduction of SrO where the mineral was added to the melt through the submerged powders injection technique. The evaluation of the modifi cation of the eutectic silicon and the chemical analysis of samples were done using optical microscopy（OP） and inductively coupled plasma（ICP）, respectively, while microstructural analyses by scanning electron microscopy（SEM）, and the injection time was variable. Magnesium was added to the melt to increase the reactivity and reduce the surface tension of the molten aluminum. It was possible to increase the strontium content from 0 to 0.027% after 20 minutes treatment. This concentration was suffi cient to bring about full modifi cation structure of eutectic silicon of as cast alloy A 356 and the acceptable quality metallurgical of alloy.
关键词：
