Phase composition of the products of encrustation of the channels of magnetodynamic feeders for aluminum alloys

Refractories ◽  
1988 ◽  
Vol 29 (3-4) ◽  
pp. 190-193
Author(s):  
S. V. Blokhina ◽  
A. V. Kosinskaya ◽  
Zh. D. Bogatyreva
Keyword(s):  
Phase Composition ◽  
Aluminum Alloys

Investigation of the Effect of Implantation of Aluminum Alloys by Gas and Metal Ions on the Structure and Phase Composition of the Implanted Layer

2021 ◽  
Vol 887 ◽  
pp. 235-241
Author(s):  
Viktor V. Ovchinnikov ◽  
Irina A. Kurbatova ◽  
Elena Vladimirovna Luk'yanenko
Keyword(s):  
Phase Composition ◽  
Aluminum Alloys ◽  
Radiation Dose ◽  
Cellular Structure ◽  
Ion Current ◽  
Subgrain Structure ◽  
Entire Volume ◽  
Average Width ◽  
Cladding Layer ◽  
Ion Current Density

The article presents studies of the structure and phase composition of aluminum alloys after ion implantation. It is shown that the effect of accelerated ions (Cu + Pb) (E = 30 keV, j = 100 μA / cm2) on an alloy without a cladding layer already at a dose of 1016 cm - 2 leads to the formation of a developed subgrain structure in the initially deformed alloy. With an increase in the ion current density and radiation dose, the cellular structure of the implanted aluminum alloys becomes more regular - well-formed cells are observed practically throughout the entire volume of the sample under study. The average width of the dislocation-free regions reaches 2.5 μm with the width of the boundaries not exceeding 0.6 μm.

Scientifically Based Choice of Heat-Resistant Cast Aluminum Alloys of New Generation

2013 ◽  
Vol 372 ◽  
pp. 49-53 ◽  
Author(s):  
Aliya Amenova ◽  
Nikolay Belov ◽  
Dauletkhan Smagulov ◽  
Ainagul Toleuova
Keyword(s):  
Phase Composition ◽  
Aluminum Alloys ◽  
Heat Resistance ◽  
Phase Analysis ◽  
Base Alloy ◽  
Cast Aluminum ◽  
Heat Resistant ◽  
Cast Aluminum Alloys ◽  
New Generation

The phase composition of the AlNiMnFeSiZr system is analyzed as applied to heat resistant nikalines (aluminum alloys of a new generation based on Ni containing eutectic), which are strengthened by the Al3Zr (L12) nanoparticles. It is shown that the presence of iron and silicon considerably complicates the phase analysis when compared with the AN4Mts2 base alloy. Silicon strongly widens the crystallization range, which increases the tendency of the alloy to form hot cracks during casting. It is shown that economically doped nikaline AN2ZhMts substantially exceeds the most heat resistant cast aluminum alloys of the AM5 grade in the totality of its main characteristics (heat resistance and mechanical and production properties).

The influence of chemical and phase composition on mechanical, tribological and electrical properties of Silver-Aluminum alloys

2018 ◽  
Vol 119 ◽  
pp. 680-687 ◽  
Author(s):  
Mamoun Taher ◽  
Fang Mao ◽  
Pedro Berastegui ◽  
Anna M. Andersson ◽  
Ulf Jansson
Keyword(s):  
Phase Composition ◽  
Aluminum Alloys ◽  
Electrical Properties

Polyphase Eutectics of Aluminum Alloys: Effect of Phase Composition

2019 ◽  
Author(s):  
Malgorzata Warmuzek
Keyword(s):  
Aluminum Alloy ◽  
Phase Composition ◽  
Aluminum Alloys ◽  
Liquid Alloy ◽  
Nucleation And Growth ◽  
Intermetallic Phases ◽  
Eutectic Phase ◽  
Local Cooling ◽  
Microstructural Effects ◽  
Alloy Microstructure

The polyphase eutectics (α-Al+intermetallic+Si) constituting the final aluminum alloy microstructure were characterized by their phase composition, growth mechanism, and morphology of eutectic crystals. The main groups of eutectic phase constituents were presented with a special attention paid to intermetallic phases. Morphology of different types of polyphase eutectics, among those divorced, was characterized and presented (as microscopic images) on microphotographs. The microstructural effects of stable and metastable phases competition in the stage of nucleation and growth of polyphase eutectics as affected by local cooling rate and liquid alloy composition were described. Some examples of the evolution of the phase composition of eutectics in commercial alloys due to modifications of technological procedures were presented.

Analysis of Microstructure and Properties of Micro-Arc Oxidation Coatings on 2A12 Aluminum Alloys for Marine Applications

2018 ◽  
Vol 52 (4) ◽  
pp. 120-128
Author(s):  
Yan Shen ◽  
Prasanta K Sahoo ◽  
Yipeng Pan
Keyword(s):  
Wear Resistance ◽  
Phase Composition ◽  
Aluminum Alloys ◽  
Complex Environments ◽  
Oxide Coatings ◽  
Marine Industry ◽  
Industry Applications ◽  
Micro Arc Oxidation ◽  
Anticorrosion Performance ◽  
Marine Applications

AbstractThere has been widespread use of 2A12 aluminum alloys in marine industry applications with exposure to harsh and complex environments. Ceramic oxide coatings were carried out on the surface of 2A12 aluminum alloys by a micro-arc oxidation (MAO) process. The microstructure, phase composition, wear resistance, and corrosion behavior of the MAO coatings were investigated experimentally. This paper mainly focuses on the experimental work to determine the effect of MoS2 concentration in the base electrolyte on the properties of MAO coatings. The results show that the MoS2 concentration greatly affects the preparation of MAO coating during the process. The coating becomes compact, smooth, and of the highest thickness on the surface when the concentration of nano-MoS2 particles is at 2.0 g/L. Furthermore, incorporation of nano-MoS2 particles significantly improves the wear resistance of MAO coatings when compared to the case without MoS2 particles. In addition, the best anticorrosion performance can be obtained among all coated samples by adding 2.0 g/L MoS2 nanoparticles in electrolyte.

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