Reviews on the Influences of Alloying elements on the Microstructure and Mechanical Properties of Aluminum Alloys and Aluminum Alloy Composites (original) (raw)

" Impact of Aluminum Alloys and Microstructures on Engineering Properties -Review "

From post twentieth century use of aluminium alloys increases drastically in automobile and aerospace industries. The aluminium alloy takes the advantage of " strength to weight ratio " and corrosion properties over other structural element such as steel and its alloys. The altered mechanical properties are achieved in aluminium alloy by using different strengthening techniques such as age hardening etc. The favourable mechanical properties are explained by revealing the microstructure of corresponding alloy and intermediate phase compounds during formation of corresponding alloy. Hence study of microstructure and their impact on mechanical properties is essential. In the present review paper the microstructure of aluminium alloys series are explained and their emphasis on the mechanical properties are discussed. By doing so, the research gap and the flow of research fields are exposed for further development

Reviews on effect of Additions the alloying element on the Microstructure and Mechanical Properties of Aluminum Alloys

International journal of engineering and technology, 2020

In recent year’s aluminum and aluminum alloys are widely used in automotive industries. These are light weight (density of about 2.7g/cc),having good malleability and formability, high corrosion resistance and high electrical and thermal conductivity. High machinability and workability of aluminum alloys are prone to porosity due to gases dissolved during melting processes. However, in the engineering application pure aluminum and its alloys still have some problems such as relatively low strength, unstable mechanical properties. The microstructure can be modified and mechanical properties can be improved by alloying. In this paper, the effect of addition of the alloying element on Aluminum Alloys and to study the modification of the iron intermetallic andthe microstructural refinement through the formation of secondary phases. The microstructure can be modified and mechanical properties can be improved by alloying, cold working and heat treatment in this regards, this paper reports...

Aluminum Alloys in Automotive Application [No. of Words: 4563

Automobile tend to become heavier as the safety and comfort features are improved. On the other hand around 20% of CO2 emitted as a result of human activity on Earth comes from transportation. To diminishing of the greenhouse gases emission, one of the ideas is to reduce the fuel consumption. It can be achieved by introducing a new powertrain solutions and lowering overall vehicle weight. The reduction of vehicle weight may be obtained by modifying the design of part and structures and application of a new material i.e. Aluminium alloys. In today’s generation it has to emphasize that the weight reduction is very important for combustion engine driven vehicles and electric driven vehicles as well. In case of electric vehicles, they typically have a very narrow operational range usually lower than 200 km. So mass lowering is especially desirable. Even small weight reduction decreases energy consumption of Electric Vehicle and as a consequence increases its range, which is a crucial parameter for users. The properties of the two main alloy systems of non-heat treatable (Al -Mg -Mn) and heat treatable (Al –Mg -Si) alloys used for automobile application are presented here. Their specific properties, principal differences, effect of alloying elements, grain size and their influence on strength and formability are described.

APPLICATION OF ALUMINUM AND ALUMINUM ALLOYS IN ENGINEERING

Applied Engineering Letters, 2018

The paper deals with the considerations related to the basic properties and application of primarily aluminum alloys and composite materials for different purposes with the focus on the automotive industry. Through the description of the basic characteristics of aluminum alloys, the starting points for their application in different technical systems are given. On the other hand, the advantages and disadvantages of the use of certain aluminum alloys, along with the guidance and compounds and elements whose use is further enhanced and enriched by aluminum alloys, are predominantly presented. The application of aluminum alloys in the automotive industry, as well as the particular types of aluminum based materials used for individual aggregates and circuits of motor vehicles, as well as their behaviour in different operating modes are imposed as a key chapter of the work. Ultimately, the advantages that are primarily achieved with the vehicle are obtained by the use of aluminum alloys and composites, with the conclusion that there is still space in the field, further improvement of the characteristics of aluminum alloys, and in the field of expansion of the diapason of their application.

Investigation of Microstructure of Aluminum Based Composite Material Obtained by Mechanical Alloying

Metals and Materials International, 2020

Aluminum, zinc, magnesium, copper and silicon carbide powders were alloyed by mechanical alloying (MA) at certain ratios and for different periods. At the same time, the zinc effect on the microstructure was investigated by keeping the ratio of zinc in the mixture at different ratios for each mixture. X-ray diffraction (XRD) analysis was carried out to investigate the different phases. Analyzes of the microstructures of alloys with different alloying times were investigated by scanning electron microscopy (SEM) and optical microscope. The powders obtained by the MA method sintered in an argon atmosphere, which is a protective gas, to obtain billets from the powder samples. Finally, the billets were polished and then examined under an optical microscope.

The influence of the modifying elements on the microstructure, mechanical, and deformation properties of aluminum alloys

Frontiers in Materials

In the current work, the standard A242 aluminum cast alloy is modified using the stir casting method with titanium (Ti) (0.5% wt.) and boron (B) (0.1% wt.) modifiers. Polarized optical and scanning electron microscopy were utilized to examine the A242 base microstructure, and A242 + TiB modified alloys; the results revealed that the modified A242 + TiB alloy was refined by 13.5 times more than the as-cast alloy. The mechanical properties were investigated experimentally using compression test in addition to the hardness test; the results revealed that the ultimate compressive strength of the A242 + TiB modified alloy was increased by 9.0% more than those of the A242 standard alloy. Moreover, the yield stress was enhanced by 40% at room temperature and 20% at 250 °C. The dynamic properties were studied using a free vibration impact test to study the modifiers’ effect on the dynamic behavior. The grain refinement notably impacted the damping capacity; due to the as-cast inhomogeneity,...

Effect of Chemical Composition Variation on Microstructure and Mechanical Properties of a 6060 Aluminum Alloy

Journal of Materials Engineering and Performance, 2004

The 6XXX series aluminum alloys (Al-Mg-Si) are widely used in many different engineering and architectural applications. These alloys usually undergo a thermal treatment, which consists of a heat treatment solution and artificial aging, since the desirable mechanical properties depend on the microstructural state of the material. The recycling of materials has been increasing recently for economic and ecologic reasons. By using scrap as raw material, important reductions in energy and total costs can be achieved, and, at the same time, negative environmental impacts can be greatly reduced. In the present work, the possibility of using a larger amount of scrap as raw material in the production of an AA 6060 alloy is evaluated by analyzing the difference in microstructure and mechanical properties between a commercial 6060 alloy and a variation with higher Fe and lower Si contents that was specially produced for this study. Both materials were placed into a heat treatment solution at 560°C for 1 h, and then underwent water quenching followed by artificial aging at 180°C for different periods of time. Hardness and tension tests were used to evaluate the mechanical properties. Light and transmission electron microscopy have been used to determine important features such as grain size before and after being placed into the heat treatment solution, and the characteristics of the second-phase particles in the two materials. This study leads to the conclusion that a higher amount of scrap material can be used in the production of 6060 Al alloy without significant changes in mechanical properties compared with the more usual compositions.

Analysis of the Microstructure and Selected Properties of the Aluminium Alloys Used in Automotive Air-Conditioning Systems

Metals, 2017

The results of microstructure examinations and studies of selected mechanical properties of four aluminium alloys used in the production of automotive airconditioning ducts (AA3103, AA5049, AA6060, AA6063) before and after the ASTM G85:A3 SWAAT Test (Sea Water Acetic Acid Test) for corrosion resistance are presented. Materials used for the manufacture of such components should be temperature stable, and therefore thermal resistance tests were carried out in a wide range of temperatures, i.e., −25 • C, 25 • C, 40 • C, 60 • C, 80 • C, 100 • C, 140 • C, 180 • C, and 220 • C. Annealing was performed for 72 h and 240 h, followed by cooling in water. The obtained results have proved that the non-precipitation-hardenable AA3103 and AA5049 alloys remain stable in the entire range of the investigated temperatures. The measured microhardness of these alloys was 43-46 HV0.1 for AA3103 and 56-64 HV0.1 for AA5049. The microhardness of the 6xxx series aluminium alloys was not stable in the investigated range of temperatures. The maximum was observed in the temperature range of 100-140 • C, which corresponded to the precipitation process of intermetallic phases, as further confirmed by microstructure observations. After the corrosion test, the mechanical properties and elongation decreased by about 5-20%.

Research on the Mechanical Behavior of Some Aluminum-Based Alloys

European Journal of Materials Science and Engineering, 2021

The mechanical properties of Al-Si alloys have been investigated. Abrasion wear resistance is an important analysis being used in various applications so there are many laboratory testing methods to determine it. In this article, we've looked at one of the ways to determine wear resistance using a scratch tester as a relatively easy, efficient, and fast test method. Materials used in the tests were: Al-Si (Al 94.30; Si 2.24, Fe 0.84) alloy. The coefficient of friction and wear of the samples were determined both by the methods of testing the wear and by investigating them in correlation with their mechanical properties.

A Study of Microstructure and Mechanical Property of Aluminium – Alumina Metal Matrix

Aluminium alloys are widely used in aerospace and automobile industries due to their low density and good mechanical properties, better corrosion resistance and wear, low thermal coefficient of expansion as compared to conventional metals and alloys. The excellent mechanical properties of these materials and relatively low production cost make them a very attractive candidate for a variety of applications both from scientific and technological viewpoints. The aim involved in designing metal matrix composite materials is to combine the desirable attributes of metals and Ceramics. Present work is focused on the study of behaviour of Aluminium Cast Alloy (LM6) with and Al2O3 composite produced by the stir casting technique. Different % age of reinforcement is used. Tensile test, Impact test and wear test performed on the samples obtained by the stir casting process. optical microscope was performed to know the presence of the phases of reinforced material.