Advanced Aluminium Matrix Composites: The Critical Need of Automotive and Aerospace Engineering Fields
TL;DR: The applications of aluminium matrix composite materials are growing continuously in the field of automotive and aerospace because of their superior physical, mechanical and tribological properties as compared to base alloy as discussed by the authors.
About: This article is published in Materials Today: Proceedings.The article was published on 2015-01-01. It has received 178 citations till now. The article focuses on the topics: Advanced composite materials & Aluminium.
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TL;DR: A review on advances and trends of aluminium matrix composites for industrial uses is presented in this article, where the automotive industry is subjected to increasingly restrict fuel economy requirements by consumers, demanding improved comfort and safety.
208 citations
TL;DR: In this paper, a heat treatable TiB2/Al-3.5Cu-1.5Mg-1Si composite was successfully fabricated by selective laser melting (SLM).
Abstract: A heat treatable TiB2/Al-3.5Cu-1.5Mg-1Si composite was successfully fabricated by selective laser melting (SLM). The results show that the Q phase forms in the matrix of the as-fabricated TiB2/Al-3.5Cu-1.5Mg-1Si composite. After T6 heat treatment, the Q phase disappears and the AlxMny, Mg2Si and Al2Cu(Mg) phases are formed. The same results can be observed before and after heat treatment in the unreinforced Al-Cu-Mg-Si alloy. EBSD and TEM analyses indicate that the addition of the TiB2 particles results in a remarkable grain refinement, leading to enhanced strength of the TiB2/Al-Cu-Mg-Si composite in comparison to the unreinforced Al-Cu-Mg-Si alloy in both the as-fabricated and heat-treated conditions. Both grain refinement and Orowan strengthening contribute to the high strength of the heat treated TiB2/Al-Cu-Mg-Si composite.
123 citations
TL;DR: In this article, the authors aim to reduce the ambiguity between ignitability and flammability of Mg materials and bridge the gap in understanding by clearly demarcating the tests and standards available for the two.
94 citations
TL;DR: Aluminum metal matrix composites (AlMMCs) have been used for many engineering applications and are seen as new generation potential materials as discussed by the authors, and they offer great promise for producing composites with the required properties for certain applications with a wide variety of reinforcing materials.
87 citations
27 Apr 2021
TL;DR: In this paper, the development tendency and main applications of Al 7XXX alloys for aircraft structures are introduced, and the existing problems are simply discussed, and also the heat treatment processes for improving the properties are compared and analyzed.
Abstract: 7XXX series aluminum alloys (Al 7XXX alloys) are widely used in bearing components, such as aircraft frame, spars and stringers, for their high specific strength, high specific stiffness, high toughness, excellent processing, and welding performance. Therefore, Al 7XXX alloys are the most important structural materials in aviation. In this present review, the development tendency and the main applications of Al 7XXX alloys for aircraft structures are introduced, and the existing problems are simply discussed. Also, the heat treatment processes for improving the properties are compared and analyzed. It is the most important measures that optimizing alloy composition and improving heat treatment process are to enhance the comprehensive properties of Al 7XXX alloys. Among the method, solid solution, quenching, and aging of Al 7XXX alloys are the most significant. We introduce the effects of the three methods on the properties, and forecast the development direction of the properties, compositions, and heat treatments and the solution to the corrosion prediction problem for the next generation of Al 7XXX alloys for aircraft structures. The next generation of Al 7XXX alloys should be higher strength, higher toughness, higher damage tolerance, higher hardenability, and better corrosion resistance. It is urgent requirements to develop or invent new heat treatment regime. We should construct a novel corrosion prediction model for Al 7XXX alloys via confirming the surface corrosion environments and selecting the accurate and reliable electrochemical measurements.
70 citations
References
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TL;DR: In this paper, the effect of SiC volume fraction and particle size on the fatigue behavior of 2080 Al was investigated, and it was found that increasing volume fraction resulted in an increase in fatigue resistance.
Abstract: The effect of SiC volume fraction and particle size on the fatigue behavior of 2080 Al was investigated. Matrix microstructure in the composite and the unreinforced alloy was held relatively constant by the introduction of a deformation stage prior to aging. It was found that increasing volume fraction and decreasing particle size resulted in an increase in fatigue resistance. Mechanisms responsible for this behavior are described in terms of load transfer from the matrix to the high stiffness reinforcement, increasing obstacles for dislocation motion in the form of S’ precipitates, and the decrease in strain localization with decreasing reinforcement interparticle spacing as a result of reduced particle size. Microplasticity was also observed in the composite, in the form of stress-strain hysteresis loops, and is related to stress concentrations at the poles of the reinforcement. Finally, intermetallic inclusions in the matrix acted as fatigue crack initiation sites. The effect of inclusion size and location on fatigue life of the composites is discussed.
219 citations
"Advanced Aluminium Matrix Composite..." refers background in this paper
...It was studied that effect of SiC particulate volume fraction and particle size on the fatigue behaviour of 2080 Al and found that increasing volume and decreasing particle size resulted in an increase in fatigue resistance [6]....
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TL;DR: In this article, the role of surface technologies in the automotive industry is described and various hard coatings like nitrides, diamond and cBN are used on tools for the manufacturing process.
149 citations
"Advanced Aluminium Matrix Composite..." refers methods in this paper
...Linear static analysis of piston satisfied all stress and strain conditions and the design was suggested for engines in 2 wheeler segment [13, 14]....
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15 Aug 1994-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, various methods of synthesizing and processing the lightweight metals with enhanced physical and mechanical properties are then presented, including ingots and castings; rapid solidification; mechanical alloying; production and use of nanostructured materials; spray deposition; vapor deposition processes; thermochemical processing; metal matrix composites; and fusion joining.
Abstract: Aerospace systems and automobiles with improved performance require materials with enhanced characteristics compared to conventional state-of-the-art materials. For automobiles, this is particularly true for power-train use as opposed to body use. These improvements will come from advances in synthesis/processing rather than from the traditional frenzy to define microstructure-property relationships. For both types of applications, characteristics such as strength, temperature capability, ductility and “forgiveness” (fracture toughness, fatigue crack growth rate, etc.) must be as high as possible, while parameters such as density and cost must be minimized; the latter is of general concern for automobile use and relatively inexpensive light aircraft. Because of their low density, the light metals based on aluminum, magnesium, titanium, and the intermetallic titanium aluminides are particularly attractive for both types of applications. In this paper, advanced materials in general are discussed, followed by a consideration of advanced materials specifically in aerospace and automobile applications. Various methods of synthesizing and processing the lightweight metals with enhanced physical and mechanical properties are then presented. The processes discussed include ingots and castings; rapid solidification; mechanical alloying; production and use of nanostructured materials; spray deposition; vapor deposition processes; thermochemical processing; metal matrix composites; and fusion joining.
111 citations
"Advanced Aluminium Matrix Composite..." refers background in this paper
...must be as high as possible, while other parameters such as density and cost must be minimized; the latter is of general concern for automobile application and relatively inexpensive light aircraft [1]....
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...[1] shown that light weight materials can make a considerable contribution to enhanced fuel consumption, since a 10% reduction in vehicle weight translates to a 5....
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...[1] recommended that improved performance in aerospace and automotive requires enhancement in the behaviour in the materials of construction....
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TL;DR: In this paper, metal-matrix composites (MMCs) are fabricated by melt-stirring technique using aluminum (Al-6063)/SiC Silicon carbide reinforced particles.
Abstract: Metal Matrix Composites (MMC's) have evoked a keen interest in recent times for potential applications. Advance composite materials like Al/SiC metal matrix composite is gradually becoming very important materials in manufacturing industries e.g. aerospace, automotive and automobile industries due to their superior properties such as light weight, low density, high strength to weight ratio, high hardness, high temperature and thermal shock resistance, superior wear and corrosive resistance, high specific modulus, high fatigue strength etc. In this study aluminum (Al-6063)/SiC Silicon carbide reinforced particles metal-matrix composites (MMCs) are fabricated by melt-stirring technique. The MMCs bars and circular plates are prepared with varying the reinforced particles by weight fraction ranging from 5%, 10%, 15%, and 20%. The average reinforced particles size of SiC are 220 mesh, 300 mesh, 400 mesh respectively. The stirring process was carried out at 200 rev/min rotating speed by graphite impeller for 15 min. The microstructure and mechanical properties like Proportionality (MPa) limit, Tensile strength upper yield point (MPa), Tensile strength lower yield point (MPa), Ultimate tensile strength (MPa), Breaking strength(MPa), % Elongation, % Reduction in area, Hardness (HRB), Density (gm/cc), Impact Strength (N.m) are investigated on prepared specimens of MMCs. It was observed that the hardness of the composite is increased with increasing of reinforced particle weight fraction. The tensile strength and impact strength both are increased with rising of reinforced weight fraction. Different mechanical tests were conducted and presented by varying the particle size and weight fractions of SiC.
109 citations
"Advanced Aluminium Matrix Composite..." refers background or result in this paper
...[18] shown the following results in Figures 3, 4 & 5....
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...[18] aluminium (Al-6063)/SiC Silicon carbide reinforced particles metal-matrix composites....
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...[18] shown in their experiment that Impact Strength (Nm) decreases with the increase in reinforced particulate size (220 mesh, 300 mesh, 400 mesh) and increases with the increase in weight fraction( 5%,10%,15%,20%) of SiC particles....
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TL;DR: In this article, the authors examined changes to the abrasive wear resistance of aluminium-based composites when heat-treated to different ageing conditions, and the composites were the age-hardenable aluminium alloys 2014 Al or 6061 Al reinforced with 3 μm or 20 μm SiC particles.
97 citations