Effects of strain rate on mechanical properties in tension of a commercial aluminium alloy used in armour applications

This paper investigated the effect of magnesium as a dispersion strengthening material on some mechanical properties of 1200-Aluminium (Al-Fe-Si) alloy, a typical commercial aluminium alloy used in the production of household utensils. 1200-Aluminium (Al-Fe-Si) alloy containing varying percentages of the dispersion hardening material (i.e. Magnesium) were produced and mechanical tests namely; hardness, tensile strength and impact strength were carried out. Also, the microstructures of the cast materials were studied. The results showed that increase in magnesium content, as dispersion hardening material improved the hardness, tensile strength and caused a slight decrease in impact strength of the 1200-Aluminium alloy. It is inferred from this work that using magnesium as a dispersion hardening material brings about corresponding improvement in some mechanical properties of 1200-Aluminium (Al-Fe-Si) alloy. Keywords: Magnesium, Aluminium alloy, dispersion strengthened, reinforced alloy, crystallographic formation Depth, Geothermal Energy

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Effect of deformation at elevated temperature before age-hardening on the mechanical properties of 2024 commercial aluminium alloy

Scripta Metallurgica et Materialia ◽

10.1016/0956-716x(91)90340-7 ◽

1991 ◽

Vol 25 (8) ◽

pp. 1987-1990 ◽

Cited By ~ 17

Author(s):

S.G. Mazzini ◽

J.C. Caretti

Keyword(s):

Mechanical Properties ◽

Elevated Temperature ◽

Aluminium Alloy ◽

Age Hardening ◽

Commercial Aluminium

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THE INFLUENCE OF CHEMICAL COMPOSITION AND HEAT TREATMENT ON THE MECHANICAL PROPERTIES AND WORKABILITY OF THE ALUMINIUM ALLOY EN AW 5454

Materiali in tehnologije ◽

10.17222/mit.2021.155 ◽

2021 ◽

Vol 55 (5) ◽

Author(s):

Alenka Šalej Lah ◽

Maja Vončina ◽

Irena Paulin ◽

Jožef Medved ◽

Peter Fajfar ◽

...

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Chemical Composition ◽

Aluminium Alloy ◽

Base Alloy ◽

Deformation Behaviour ◽

Compression Tests ◽

Cast State ◽

Cast Slab ◽

Commercial Aluminium

The influence of chemical composition and heat treatment on the mechanical properties and formability of the selected commercial aluminium alloy EN AW 5454 was investigated. The main properties of alloy 5454 from the AA 5xxx series are very good corrosion resistant and has good formability. From the cast slab a 50 mm thick slice was taken in the width cross section in the slab centre. One half of the slice was homogenised for 10 hours at a temperature of 530 °C. The cast and homogenised samples were investigated using light and scanning electron microscopy. For the study of the influence of the heat treatment, samples in the as-cast state were annealed in the laboratory furnace at a temperature of 530 °C for 4, 6, 8, 10 and 12 hours. To study the influence of chemical composition, four different samples were prepared: the first without additions, the second with an addition of 1 wt% Mn, the third with 3 wt% Mg and the fourth with an addition of both elements, Mn and Mg. The XRF analyses confirmed the desired chemical composition of all four produced alloys. Half of each alloy’s sample was homogenised at the same temperature and time as the base alloy in the as-cast state. The hot deformation behaviour of the different alloys was investigated using cylindrical hot compression tests performed on a Gleeble 1500D thermo-mechanical simulator. By comparing flow curves a high influence of the thermo-mechanical parameters on the alloy formability can be seen. The alloy has good workability and with the addition of Mn and Mg, the stress values are higher than those of the base alloy.

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High strain rate superplastic flow stress and post-deformation mechanical properties of mechanically alloyed 2024 aluminium alloy reinforced with SiC particles

Materials Science and Technology ◽

10.1179/mst.1997.13.12.1039 ◽

1997 ◽

Vol 13 (12) ◽

pp. 1039-1044 ◽

Cited By ~ 5

Author(s):

K. Matsuki ◽

H. Kawakami ◽

M. Tokizawa ◽

S. Murakami

Keyword(s):

Mechanical Properties ◽

Flow Stress ◽

High Strain Rate ◽

Strain Rate ◽

Aluminium Alloy ◽

High Strain ◽

Superplastic Flow ◽

Mechanically Alloyed ◽

Sic Particles

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Effect of Compressive Strain Rate on Microstructure and Mechanical Properties of 7050 Aluminium Alloy

Advances in Materials Science and Engineering ◽

10.1155/2021/4953609 ◽

2021 ◽

Vol 2021 ◽

pp. 1-8

Author(s):

Qiang Shen ◽

Luochuang Huang ◽

Yan Li ◽

Kang Yu ◽

Dezheng Liu

Keyword(s):

Mechanical Properties ◽

Strain Rate ◽

Aluminium Alloy ◽

Compressive Strain ◽

Testing Machine ◽

Fracture Morphology ◽

Automobile Manufacturing ◽

Grain Sizes ◽

Universal Testing ◽

Microstructure And Mechanical Properties

7050 aluminium alloy is a superior material used in the areas of aerospace and automobile manufacturing. In this work, homogeneous cast cylinder samples of 7050 aluminium alloy with size of Φ80 mm × 100 mm were compressed isothermally at 350°C with compressive strain rate of 0.1 s−1,1 s−1, and 10 s−1, respectively. The samples were then processed into standard tensile specimens, and then tensile testing was done by using the GL8305 universal testing machine. The grain sizes and fracture morphology were analyzed by the SEM observation and cellular automaton (CA) method. The effect of compressive strain rate on microstructure and mechanical properties of 7050 aluminium alloy was investigated. The results show the following. (1) Grain refinement occurred after compression. The grain sizes of the samples decrease with the decrease of compressive strain rate. The grain sizes in the radial edge and the axial center of the cylinder samples are the smallest. (2) The tensile strength and breaking elongation rate were improved when compared to the original alloy. The mechanical properties of samples compressed with compressive strain rate of 0.1 s−1 are the best. (3) The fracture morphology of the samples shows that the fracture of the samples is ductile fracture. The sizes and depths of dimples increased with the decrease of grain sizes.

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