Optimization of the Composition and Structure of Deformable Heat Resistant Aluminum Alloy

2019 ◽  
Vol 946 ◽  
pp. 156-161
Author(s):  
Ainagul Toleuova ◽  
Bakhyt Balbekova ◽  
Irina Erakhtina
Keyword(s):  
Phase Diagram ◽  
Aluminum Alloys ◽  
Computer Calculation ◽  
Corrosion Resistant ◽  
Heat Resistant ◽  
Composition And Structure ◽  
Polythermal Sections ◽  
Temperatures Of Phase Transformations ◽  
The Cost ◽  
New Generation

The necessity of finding scientifically grounded methods for the development of new heat-resistant, wear-resistant and corrosion-resistant aluminum alloys is presented in the present work. For this purpose, the analysis of modern methods for computer calculation of phase diagrams in multicomponent metal systems using the Thermo-Calc program was carried out. Therefore, a quantitative analysis of the phase diagram the Al-Cu-Mn-Zr system was carried out, as the basis of deformable high-temperature aluminum alloys. Isothermal and polythermal sections of the phase diagram were calculated in this system. The temperatures of phase transformations were calculated. The mass and volume fractions of the phases in the studied alloys were calculated. The range of concentrations and temperatures at which the maximum amount of dispersoids Al20Cu2Mn3 may be achieved, was defined. The minimum amount of Al2Cu phase is calculated, which should correspond to the best heat resistance of alloys. It is substantiated that in the alloys of a new generation of ALTEK type, the use of homogenization and quenching operations is inexpedient, which implies the possibility of a significant reduction in the cost of heat treatment in comparison with industrial alloys, such as 1201.

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).

Heat resistant and corrosion resistant aluminum alloys hardened with oxide phase

1982 ◽  
Vol 24 (3) ◽  
pp. 213-216
Author(s):  
B. A. Gromov ◽  
B. I. Matveev ◽  
V. F. Zagorodneva
Keyword(s):  
Aluminum Alloys ◽  
Oxide Phase ◽  
Corrosion Resistant ◽  
Heat Resistant

Technological quality assurance of surfaces of products made of corrosion-resistant aluminum alloys during turning

2020 ◽  
pp. 3-12
Author(s):  
Vyacheslav V. Maksarov ◽  
Alexey D. Khalimonenko ◽  
Taras S. Golikov ◽  
Dmitry D. Maksimov
Keyword(s):  
Quality Assurance ◽  
Aluminum Alloys ◽  
Corrosion Resistant ◽  
Technological Quality

scholarly journals LeafGo: Leaf to Genome, a quick workflow to produce high-quality De novo genomes with Third Generation Sequencing technology

2021 ◽  
Author(s):  
Patrick Driguez ◽  
Salim Bougouffa ◽  
Karen Carty ◽  
Alexander Putra ◽  
Kamel Jabbari ◽  
...  
Keyword(s):  
De Novo ◽  
Rapid Development ◽  
Plant Genome ◽  
Plant Genomics ◽  
High Quality ◽  
High Molecular Weight Dna ◽  
Tissue Samples ◽  
Sequencing Technologies ◽  
The Cost ◽  
New Generation

AbstractRecent years have witnessed a rapid development of sequencing technologies. Fundamental differences and limitations among various platforms impact the time, the cost and the accuracy for sequencing whole genomes. Here we designed a complete de novo plant genome generation workflow that starts from plant tissue samples and produces high-quality draft genomes with relatively modest laboratory and bioinformatic resources within seven days. To optimize our workflow we selected different species of plants which were used to extract high molecular weight DNA, to make PacBio and ONT libraries for sequencing with the Sequel I, Sequel II and GridION platforms. We assembled high-quality draft genomes of two different Eucalyptus species E. rudis, and E. camaldulensis to chromosome level without using additional scaffolding technologies. For the rapid production of de novo genome assembly of plant species we showed that our DNA extraction protocol followed by PacBio high fidelity sequencing, and assembly with new generation assemblers such as hifiasm produce excellent results. Our findings will be a valuable benchmark for groups planning wet- and dry-lab plant genomics research and for high throughput plant genomics initiatives.

Distribution on microhardness, chemical composition and structure over a layer of heat-resistant highyardness alloy formed by multilayer plasma surfacing in a nitrogen medium

2021 ◽  
pp. 75-80
Author(s):  
N.N. Malushin ◽  
◽  
D.A. Romanov ◽  
A.P. Kovalev ◽  
L.P. Bashchenko ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Surface Morphology ◽  
Elemental Composition ◽  
High Quality ◽  
Heat Resistant Alloy ◽  
Resistant Alloy ◽  
Heat Resistant ◽  
Slag Inclusions ◽  
Composition And Structure ◽  
Plasma Surfacing

Microhardness distributions, surface morphology, and elemental composition of a deposited layer of a heat-resistant alloy of the type P2M8U steel formed by plasma surfacing in a protective-alloying nitrogen medium are studied. It was established that the surfacing technology and surfacing material allows to obtain a high-quality deposited alloy without cracks, pores, slag inclusions and defects of macro- and microstructure. It has been established that the deposited material is pearlite grains at the boundaries and grain junctions of which are carbonitrides based on iron, tungsten, chromium, molybdenum, aluminum (Fe6 W6 NC and AlN).

Optimizing Casing Cut and Pull Operations Efficiency Using Ultrasonic Logging Data

2021 ◽  
Author(s):  
Tonje Winther ◽  
Guillermo Andres Obando Palacio ◽  
Amit Govil
Keyword(s):  
Data Interpretation ◽  
Economic Life ◽  
P Efficiency ◽  
Sonic Log ◽  
The Status ◽  
Exploration Drilling ◽  
Well Abandonment ◽  
The Cost ◽  
New Generation

Abstract Thousands of wells will enter the plug and abandonment (P&A) phase across the Norwegian Continental Shelf (NCS), either for permanent well abandonment or section abandonment with subsequent sidetracks. In the medium and long term, more wells will be added to follow the same path as exploration, drilling, and production continues. The cost of abandonment operations demands improvement of how P&A operations are performed. A critical, and often time-consuming operation, of well or section abandonment is to cut and pull (C&P) some of the casing strings. Uncertainties about the status of the annular contents and the material within it, such as settled solids, contaminated cement, or well geometry might pose restraints that could hinder the C&P efficiency. The uncertainties may cause operations to deviate from the plan, increasing the time and the costs required. New-generation ultrasonic tools, in combination with sonic tools, provide information about the annulus material with a detailed map of the axial and azimuthal variations of the annulus contents. The geometric position of the inner pipe can be determined relative to the outer casing or borehole using advanced measurements. Logging with ultrasonic and sonic tools is a noninvasive method that can increase the efficiency of C&P operations. In this paper we discuss three case studies of wells ranging from 2 to 40 years old. Some of the wells have reached the end of their economic life and are now ready for permanent plug and abandonment (PP&A) or slot recovery. Each case is unique with different casing sizes being retrieved, along with varied annulus contents observed from ultrasonic and sonic log data. The innovative use of the data interpretation with advanced workflows decreased uncertainties about the annulus contents and enabled following an informed C&P strategy. In all three cases, the casing sections were retrieved without difficulties from the recommended depths of the analysis. Casing milling was performed in intervals where C&P was not supported by the data analysis.

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