Double Modification Of AlSi9Mg Alloy With Boron, Titanium And Strontium

Archives of Metallurgy and Materials

T. Lipiński¹ 

[1] UNIVERSITY OF WARMIA AND MAZURY IN OLSZTYN, FACULTY OF TECHNICAL SCIENCES, DEPARTMENT OF MATERIAL AND MACHINE TECHNOLOGY, 11 OCZAPOWSKIEGO STR., 10-957 OLSZTYN, POLAND;

关键词: Keywords: Al-Si alloys;    silumin;    mechanical properties;    modification;    boron;    titanium;    strontium;   

DOI  :  10.1515/amm-2015-0394

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 microstructure of an unmodified AlSi9Mg alloy comprises large primary α phase dendrites, eutectic β phase crystals and eutectic α phase. This composition is responsible for the alloy’s low strength parameters, and it limits the extent of practical applications. The mechanical properties of hypoeutectic silumins can be improved through chemical modification as well as traditional or technological processing. Modification improves the mechanical properties of alloys through grain refinement. This study presents the results of double modification of an AlSi9Mg alloy with strontium, boron and titanium. The influence of the analyzed modifiers on the microstructure and mechanical properties of the processed alloy was presented in graphs. The modification of a hypoeutectic AlSi9Mg alloy improved the alloy’s properties. The results of the tests indicate that the mechanical properties of the modified alloy are determined by the sequence in which the components are introduced to the alloy.

【 授权许可】

Unknown