Influence of Al5FeSi Phases on the Cracking of Castings at Al-Si Alloys

被引：6

作者：

Hren, I ^{[1
]}

Svobodova, J. ^{[1
]}

Michna, S. ^{[1
]}

机构：

[1] Univ JE Purkyne Usti Nad Labem, Fac Mech Engn, Inst Technol & Mat, Pasteurova 7, Usti Nad Labem 40096, Czech Republic

来源：

ARCHIVES OF FOUNDRY ENGINEERING | 2018年 / 18卷 / 04期

关键词：

Aluminium alloy; Intametallic phase; Low pressure casting; Structure; Iron contamination;

D O I：

10.24425/afe.2018.125180

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The research described in this contribution is focused on fractographic analysis of the fracture area of newly developed eutectic silumin type AlSi9NiCuMg0.5 (AA 4032), which was developed and patented by a team of staff of the Faculty of Mechanical Engineering. The paper presents determination of the cause of casting cracks in operating conditions. Fractographic analysis of the fracture area, identification of the structure of the casting, identification of structural components on the surface of the fracture surface and chemical analysis of the material in the area of refraction were performed within the experiment. Al-Si alloys with high specific strength, low density, and good castability are widely used in pressure-molded components for the automotive and aerospace industries. The results shown that the inter-media phases Fe-Al and Fe-Si in aluminium alloys lead to breakage across the entire casting section and a crack that crossed the entire cross section, which was confirmed by EDS analysis.

引用

页码：120 / 124

页数：5

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