High-Temperature Mechanical Properties of Aluminum Alloy Matrix Composites Reinforced with Zr and Ni Trialumnides Synthesized by In Situ Reaction

WAl12 reinforced 2024 aluminum alloy matrix composites were prepared by powder metallurgy with tungsten particles and W50Al50 alloy particles. The effects of WAl12 on the mechanical properties of 2024 aluminum alloy composites at room temperature and high temperature were studied, and the friction behavior was characterized. The results show that intermetallic WAl12 phase forms in the composite by 2024 aluminum alloy and tungsten. The mechanical properties and friction behavior can be improved by the formation of intermetallic WAl12 phase. The tensile strength of 2024 aluminum alloy at room temperature and 180 °C can be improved by adding tungsten less than 1.5 at.%. Adding 2.0 at.% tungsten can reduce the friction coefficient by 20 % and the scratch width by 40 %. The tensile fracture surface of the sample was analyzed by scanning electron microscopy (SEM), indicating that WAl12 intermetallic phase is closely connected with the aluminum matrix.

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Characterization of Microstructure and Hardness of Aluminum Alloy Matrix Composites Reinforced with Boron Fiber (Coarse and Fine) Particles Prepared by Powder Metallurgy Technique

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.j9530.1081219 ◽

2019 ◽

Vol 8 (12) ◽

pp. 5437-5444

Keyword(s):

Mechanical Properties ◽

Aluminum Alloy ◽

Powder Metallurgy ◽

Fine Particles ◽

Matrix Composites ◽

Alloy Matrix ◽

Boron Fiber ◽

The Matrix ◽

Aluminum Alloy Matrix

Powder metallurgy is one of the best methods to achieve uniform distribution of reinforcement in to the matrix. In this Paper, characterization of microstructure and hardness of aluminum alloy matrix composites reinforced with boron fiber particles prepared by powder metallurgy technique are investigated. The effects of boron fiber (Coarse particles size of 120 µm and Fine particles size of 50 µm) on mechanical properties were studied. Increasing the reinforcement of boron fiber content with 5%, 10% and15% into the matrix improved the mechanical properties. The percentage of boron fiber reinforcement increasing the strength of the hardness number is also increasing simultaneously, the aluminum alloys and boron fiber particles on the microstructure and mechanical properties of the composites were investigated. X-ray diffraction (XRD) and scanning electron microscopy (SEM) with Energy dispersive spectrum (EDS) analyses indicated. Analysis and observing microstructure of the composite is boron fiber particles are uniformly dispersed in the aluminum alloy matrix composites.

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DURALCAN F3S.xxS

Alloy Digest ◽

10.31399/asm.ad.al0329 ◽

1994 ◽

Vol 43 (10) ◽

Keyword(s):

Fracture Toughness ◽

Silicon Carbide ◽

Compressive Strength ◽

Aluminum Alloy ◽

High Temperature ◽

Base Alloy ◽

Alloy Matrix ◽

Reinforced Composite ◽

Temperature Performance ◽

Aluminum Alloy Matrix

Abstract Duralcan F3S.xxS is a heat treatable aluminum alloy-matrix gravity composite. The base alloy is similar to Aluminum 359 (Alloy Digest Al-188, July 1969); the discontinuously reinforced composite is silicon carbide. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and fatigue. It also includes information on high temperature performance. Filing Code: AL-329. Producer or source: Alcan Aluminum Corporation.

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