Reviews on effect of Additions the alloying element on the Microstructure and Mechanical Properties of Aluminum Alloys (original) (raw)
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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, cold working and heat treatment in this regards, this paper reports the influences of some alloying elements on the microstructures and mechanical properties of Aluminum alloys and aluminum alloy composites.
" 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
Study of impact of addition alloying element in aluminium alloy: A Review
Journal of emerging technologies and innovative research, 2017
Recent 20 th century, aluminum and aluminum alloys drastically used in automotive industries like automobile and aerospace locomotive industries because of its various mechanical properties like strength malleability and formability corrosion resistance, electrical and thermal conductivity good machinability. The microstructure of corresponding alloy and intermediate phase compounds during formation of corresponding alloy change the addition of alloying element which effect on mechanical properties. In present research paper shows the use of aluminum and aluminum alloys with containing other alloy elements, with their effects and micro structural behavior and wear behavior at various speed load condition.
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,...
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.
2014
There has been large interest in combining the light weight of aluminium with varied excellent mechanical properties that a metal should poses for various industrial applications. This interest has led to vigorous researches in improving the mechanical properties of aluminium.This paper therefore investigatesthe effect of macro additions of zinc and nickel on the mechanical and microstructural properties of a modified 7xxx aluminium alloy. In this investigation, a corresponding relationship has been established between the microstructure and the properties of aluminium. Using the process of stir casting, Zinc was added to Al2.5Mg7Ni and Al2.5Mg2Ni to cast samples which were later homogenized at 550 o C and tempered (T6). Mechanical properties including, tensile strength, tensile elongation, hardness and fracture strength were investigated. Result shows that cast samples containing 15wt%Zn and 2wt%wtNi exhibited superior tensile strength (128.5MPa) and (0.0419) which is attributed to...
The incessant failure of aluminium alloy in service is one of the major obstacle facing industrialist and manufacturers. The urgent desire for low density, cheaper and super workability of material necessitate changing from aluminium alloy to composite materials, Aluminium metal matrix composite has been produced as a result of high specific strength, cheaper rate and resistance to wear which found major structural application in aerospace and automotive industry. Stir casting technique has been used because it is simple, flexible and applied in production of large quantity of materials. Agricultural and agro industrial waste products which are cheaper and easily available like rice husk ask, flyash, bagasse ash and graphite has been utilized as reinforcements in aluminium matrix. This paper presents a review on improvement of aluminium alloy for engineering application. The study shows that inclusion of agro industrial waste improved mechanical properties of the developed material.
INFLUENCE OF HEAT TREATMENT ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF 6061 ALUMINUM ALLOY
The process of heat treatment is the method by which metals are heated and cooled in a series of specific operations that never allow the metal to reach the molten state. The purpose of the heat treatment is to cause desire changes in the metallurgical structure and thus in the properties of metal parts. The aim of this research is to study the influence of heat treatment and natural aging mechanism on the microstructure and mechanical properties of aluminum alloy 6061. The aluminum alloy 6061 sample heat treated using T4 method which is heat treated at 550°C, 575°C and 600°C and then naturally aged at ambient environment for 3 hours. After heat treated process, the effects were investigated in terms of microstructure using metallurgical analysis and mechanical properties by tensile tests and hardness test. Tensile tests show that the yield stress and UTS have high value when heat treated at 600°C where 103.28693 MPa and 195.246895 MPa meanwhile the Young modulus heat treated at 550°C have high value; 84417.95106 MPa. For heat treatment specimens, the high VHN is specimen's heat treated at 600°C which have value 85.7 and the lower VHN value is specimen's heat treated at 550°C with value 57.5. The heat treatment process result soft aluminum alloy 6061. Lastly for microstructure observation, different microstructure appear within different heat treatment temperature. From the data and result that already determined, it achieved the objectives and scope of this research. viii
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.