Aluminium and aluminium alloys. Chemical composition and form of wrought products

Due to low density and good mechanical properties, aluminium alloys are widely applied in transportation industry. Moreover, they are characterized by the specific physical properties, such as high electrical conductivity. This led to application of the hypoeutectic Al-Si-Mg alloys in the power generation industry. Proper selection of the alloys chemical composition is an important stage in achievement of the demanded properties. The following paper presents results of the research on the influence of alloys chemical composition on their properties. It has been revealed that Si and Ti addition decreases electrical conductivity of the Al-Si-Mg alloys, while Na addition increases it. The mechanical properties of the investigated alloys are decreased by both silicon and iron presence. Sodium addition increases ductility of the Al-Si-Mg alloys.

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Fatigue Properties of Aluminium Alloys for Uniaxial Cyclic Loads

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.598.13 ◽

2014 ◽

Vol 598 ◽

pp. 13-19

Author(s):

Ewelina Böhm ◽

Tadeusz Łagoda

Keyword(s):

Fatigue Strength ◽

Chemical Composition ◽

Aluminium Alloys ◽

Cyclic Fatigue ◽

Fatigue Tests ◽

Fatigue Properties ◽

Cyclic Loads ◽

Fatigue Characteristics

The paper presents an analysis of aluminium and its alloys in terms of fatigue strength. The paper contains information in terms of cyclic fatigue tests of aluminium alloys. On the basis of available literature data, Basquin fatigue characteristics have been designated. On their basis a comparison between chosen fatigue characteristics of aluminium alloys with different chemical composition and element percentage in the substance have been done.

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Influence of Chemical Composition on Porosity in Aluminium Alloys

Archives of Foundry Engineering ◽

10.2478/afe-2014-0026 ◽

2014 ◽

Vol 14 (2) ◽

pp. 5-8 ◽

Cited By ~ 3

Author(s):

L. Kucharčík ◽

M. Brůna ◽

A. Sládek

Keyword(s):

Chemical Composition ◽

Aluminum Alloys ◽

Aluminium Alloys ◽

Pure Aluminum ◽

Mold Material ◽

Solidification Shrinkage ◽

Melt Temperature ◽

Aluminum Castings ◽

Gas Segregation ◽

Final Amount

Abstract Porosity is one of the major defects in aluminum castings, which results is a decrease of a mechanical properties. Porosity in aluminum alloys is caused by solidification shrinkage and gas segregation. The final amount of porosity in aluminium castings is mostly influenced by several factors, as amount of hydrogen in molten aluminium alloy, cooling rate, melt temperature, mold material, or solidification interval. This article deals with effect of chemical composition on porosity in Al-Si aluminum alloys. For experiment was used Pure aluminum and four alloys: AlSi6Cu4, AlSi7Mg0, 3, AlSi9Cu1, AlSi10MgCu1.

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