Structure and mechanical behavior of Al–Al4C3 composites

Abstract

Results obtained from an x-ray phase analysis and mechanical tests on compression of hot-pressed Al-Al 4 C 3 composites with 5 or 10 wt.% C added to the initial powder mixture are presented. It is shown that the higher is the amount of aluminum carbide formed under hot pressing, the higher are the yield stress and the effective elastic modulus of the composite.

Synthesis of Micro- and Nanoparticles of Metal Oxides and Their Application for Reinforcement of Al-Based Alloys

“…In this case individual properties of components of such composites are used efficiently (to the maximum extent). One of the possible and promising methods of improving the physical and mechanical properties (Young's modulus, ultimate tensile strength, yield strength, hardness, durability, and specific electrical and thermal properties) of Al-based metal-matrix composites (MMC) is the introduction of micro-and nanoparticles of oxides (nitrides, borides, and carbides) into the melt with subsequent solidification [2][3][4][5][6]. Methods of production of nonmetallic micro-and nanoparticles can significantly affect morphology and physical properties of nanopowders.…”

The Physical-Mechanical and Electrical Properties of Cast Aluminum-Based Alloys Reinforced with Diamond Nanoparticles

“…Micro-or nanoparticles of oxides, carbides, borides, etc., can be used as reinforcing species. Of great importance is the introduction of high-elastic-modulus detonation diamond nanoparticles into a soft aluminum matrix [2][3][4]. The elastic modulus of nanodiamonds is 880 GPa and the hardness is 70 GPa.…”

Structure, phase content and mechanical properties of aluminium with hard particles after shock-wave compaction

“…Compaction of Al powder as well as its mixtures with n-diamond [7][8][9] and alumina [4,13] (10 wt% of each) was investigated in the framework of this research. Investigation of such compositions along with practical use for production of particle-reinforced composite materials will make it possible to study influence of high-modulus components on Al compaction process.…”

“…At the same time this method of aluminum powder compaction makes it possible to change the type and quantity of reinforcement material, e.g. aluminum oxide nanoparticles, high-modulus carbon particles in the form of nanodiamonds (further n-diamonds) [7][8][9] etc. This enables creation of materials with desired properties.…”