The Influence of Strontium on the Microstructure of Cast Magnesium Alloys Containing Aluminum and Calcium

Archives of Metallurgy and Materials

T. Rzychoń¹  B. Dybowski¹  A. Kiełbus¹ 

[1] SILESIAN UNIVERSITY OF TECHNOLOGY, KATOWICE, POLAND

关键词: Key words:: Magnesium alloys;    Microstructure;    Cast Mg-Al-Ca-Sr Alloys;   

DOI  :  10.1515/amm-2015-0026

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

The structure of Mg-9Al-2Ca-xSr alloys is composed of a-Mg grains and the Al2Ca and Al4 Sr phases in the interdendritic areas. These phases are formed as a result of eutectic reactions. Globular particles of the Al8Mn5 phase are observed within the interior of the grains. The addition of strontium to Mg-9Al-2Ca-0.4Mn alloys causes the formation of the Al4Sr phase and increase of its volume fraction with increasing strontium levels. Moreover, increase of the strontium amount causes a decrease of aluminum content in the a-Mg solid solution.

【 授权许可】

Unknown