Internal Stress Development during Fatigue Cycling of High-Strength Al/SiC Metal Matrix Composites

2006 ◽  
pp. 769-774
Author(s):  
Michael E. Fitzpatrick
Keyword(s):  
Internal Stress ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
High Strength ◽  
Matrix Composites ◽  
Fatigue Cycling ◽  
Stress Development

scholarly journals Wettability in Metal Matrix Composites

Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1034
Author(s):  
Massoud Malaki ◽  
Alireza Fadaei Tehrani ◽  
Behzad Niroumand ◽  
Manoj Gupta
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Interfacial Strength ◽  
High Strength ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Metal Matrix Nanocomposites ◽  
Aerospace Applications ◽  
Matrix Nanocomposites

Metal matrix composites (MMCs) have been developed in response to the enormous demand for special industrial materials and structures for automotive and aerospace applications, wherein both high-strength and light weight are simultaneously required. The most common, inexpensive route to fabricate MMCs or metal matrix nanocomposites (MMNCs) is based on casting, wherein reinforcements like nanoceramics, -carbides, -nitrides, elements or carbon allotropes are added to molten metal matrices; however, most of the mentioned reinforcements, especially those with nanosized reinforcing particles, have usually poor wettability with serious drawbacks like particle agglomerations and therefore diminished mechanical strength is almost always expected. Many research efforts have been made to enhance the affinity between the mating surfaces. The aim in this paper is to critically review and comprehensively discuss those approaches/routes commonly employed to boost wetting conditions at reinforcement-matrix interfaces. Particular attention is paid to aluminum matrix composites owing to the interest in lightweight materials and the need to enhance the mechanical properties like strength, wear, or creep resistance. It is believed that effective treatment(s) may enormously affect the wetting and interfacial strength.

scholarly journals Tensile and fatigue properties of fiber-reinforced metal matrix composites Cf/5056Al

2021 ◽  
Vol 30 ◽  
pp. 2633366X2092971
Author(s):  
Ying Ba ◽  
Shu Sun
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
High Strength ◽  
Longitudinal Direction ◽  
Fatigue Properties ◽  
Matrix Composites ◽  
Weak Interface ◽  
Fiber Reinforced ◽  
Alloy Matrix ◽  
Medium Strength

Fiber-reinforced metal matrix composites have mechanical properties highly dependent on directions, possessing high strength and fatigue resistance in fiber longitudinal direction achieved by weak interface bonding. However, the disadvantage of weak interface combination is the reduction of transversal performances. In this article, tensile and fatigue properties of carbon fiber-reinforced 5056 aluminum alloy matrix (Cf/5056Al) composite under the condition of medium-strength interface combination are carried out. The fatigue damage mechanisms of Cf/5056Al composite under tension–tension and tension–compression loads are not the same, but the fatigue life curves are close, which may be the result of the medium-strength interface combination.

scholarly journals Recent Developments towards Commercialization of Metal Matrix Composites

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2828
Author(s):  
Dae-Young Kim ◽  
Hyun-Joo Choi
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Chemical Properties ◽  
High Strength ◽  
Electronic Energy ◽  
Matrix Composites ◽  
Wide Range ◽  
Recent Developments ◽  
Processing Material ◽  
And Chemical Properties

Metal matrix composites (MMCs) are promising alternatives to metallic alloys. Their high strength-to-weight ratios; high temperature stabilities; and unique thermal, electrical, and chemical properties make them suitable for automotive, aerospace, defense, electrical, electronic, energy, biomedical, and other applications. The wide range of potential combinations of materials allows the properties of MMCs to be tailored by manipulating the morphology, size, orientation, and fraction of reinforcement, offering further opportunities for a variety of applications in daily life. This Special Issue, “Metal Matrix Composites”, addresses advances in the material science, processing, material modeling and characterization, performance, and testing of metal matrix composites.

scholarly journals Fatigue and Fracture Behavior of Al6061-B4C Aluminium Matrix Composites

2020 ◽  
Vol 9 (4) ◽  
pp. 2121-2125
Keyword(s):  
Fracture Toughness ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Density Ratio ◽  
High Hardness ◽  
High Strength ◽  
Casting Process ◽  
Matrix Composites ◽  
Reaction Products ◽  
Automobile Engineering

In the present day engineering design and development activities many Scientists, Researchers and Engineers are striving hard to develop new and better engineering materials, which accomplishes high strength, low weight and energy efficient materials since the problems of environment and energy are major threshold areas. The development of new materials is growing day by day to replace the conventional materials in aerospace, marine engineering, automobile engineering industries etc., Hence, composite materials are found to be an alternative. A variety of metals and their alloys such as Aluminum, Magnesium and Titanium are comprehensively used as matrix materials. Among these Aluminium alloys have been used extensively, because of their excellent strength, low density, corrosion resistance and toughness. Similarly, many researchers have attempted to develop aluminum based metal matrix composites using different reinforcements such as SiC, Al2O3, B4C, TiC, TiO2, B4C etc., are added to the matrix to get required MMC’s. Among these reinforcements, B4C emerged as an exceptional reinforcement due to its high strength to density ratio, possesses high hardness and avoid the formation of interfacial reaction products with aluminum. Hence, in this paper attempts are made to fabricate Al 6061-3, 6, 9 and 12 wt.% B4C metal matrix composites by stir casting process to study fatigue life and fracture toughness as per ASTM standards. It is evident that fatigue strength and fracture toughness of the composites were enhanced with the addition of the wt.% of the reinforcement.

scholarly journals EXPERIMENTAL STUDIES ON MECHANICAL PROPERTIES OF EGLASS SHORT FIBRES & FLY ASH REINFORCED AL 7075 HYBRID METAL MATRIX COMPOSITES

2013 ◽  
pp. 179-183
Author(s):  
PRABHAKAR KAMMER ◽  
DR. H.K. SHIVANAND ◽  
SANTHOSH KUMAR. S
Keyword(s):  
Wear Resistance ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Experimental Studies ◽  
High Strength ◽  
Damping Capacity ◽  
Matrix Composites ◽  
Standard Size ◽  
Specific Strength ◽  
Hybrid Metal Matrix Composites

Conventional monolithic materials have limitations in achieving good combination of strength, stiffness, toughness and density. To overcome these shortcomings and to meet the ever increasing demand of modern day technology, composites are most promising materials of recent interest. Metal matrix composites (mmcs) possess significantly improved properties including high specific strength, specific modulus, damping capacity and good wear resistance compared to unreinforced alloys. Among the mmc’s aluminum composites are predominant in use due to their low weight and high strength. The key features of mmc’s are specific strength and stiffness, excellent wear resistance, high electrical and thermal conductivity. The present investigation aims at the development of aluminium based e-glass and flyash particulate reinforced hybrid metal matrix composites. The test specimens are prepared as per astm standard size by turning and facing operations to conduct tensile and compression test.

Automotive Light-Weighting Using Aluminium Metal Matrix Composites

2015 ◽  
Vol 828-829 ◽  
pp. 485-491 ◽  
Author(s):  
Francis Nturanabo ◽  
Leonard M. Masu ◽  
Gonasagren Govender
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Manufacturing Industry ◽  
High Strength ◽  
The Other ◽  
Current Status ◽  
Matrix Composites ◽  
Automotive Manufacturing ◽  
Light Weighting ◽  
Aluminium Metal

The automotive manufacturing industry, worldwide, has been engaged in a race to produce lightweight vehicles. Consequently, the industry continues to deploy significant resources in developing and utilising advanced lightweight materials and cutting-edge technologies in the manufacture of new vehicle models that are energy efficient, more reliable, safer, more user-friendly and less polluting; without compromising the other important vehicle attributes such as, size, cargo space and payload, structural integrity, power and acceleration. Mass reduction is one consistent and cost-effective strategy that can be combined with other efficiency improvement strategies and technologies to meet the requirements of fuel economy and emission reduction. The materials used in automotive light-weighting must fulfil several criteria imposed by regulation and legislation with the environment in addition to satisfying customer requirements. The choice for light, high strength automotive materials is between advanced high-strength steel (AHSS) on one hand, and composites of aluminium (aluminium metal matrix composites (AlMMCs)), magnesium and polymers, on the other. In this paper, the potential of AlMMCs as a replacement for most steels and aluminium alloys in the manufacture of automotive parts and components is discussed as well as their current status and future trends of utilisation in automotive light-weighting.

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