Microalloyed Magnesium Alloys with High Complex of Properties

Belikov, S.; Shalomeev, V.; Цивірко, Е. І.; Aikin, N.; Sheyko, S.

doi:10.7449/2017/mst_2017_84_91

Cited by 11 publications

(11 citation statements)

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“…Thus, the best properties of the magnesium alloy are achieved by filtration through a complex filter containing limestone, magnesite and graphite. The use of a complex filter [7] in the production of castings from magnesium alloys can improve their quality, physical and mechanical properties and increase the yield of suitable castings.…”

Section: Research Resultsmentioning

confidence: 99%

“…Various fluxes are widely used to protect and refine the liquid magnesium alloy, however, in this case there is a risk of contamination of the metal with flux and its refining products [7][8][9], which leads to flux corrosion and reduces the quality of implants. To improve their quality, melt filtration is used before pouring it into the mold [10,11] using materials capable of adsorbing flux, non-metallic inclusions [12,13] and providing high quality metal and improved mechanical properties [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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REFINING OF BIOSOLUBLE ALLOY OF Mg-Nd-Zr SYSTEM FOR MANUFACTURE OF IMPLANTS

Shalomeev

Tabunshchyk

Matiukhin

et al. 2022

METAL 2022 Conference Proeedings

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Currently, biosoluble materials are widely used for the manufacture of implants, among which the most promising are magnesium alloys. Magnesium is a natural element of the body -it is contained in bone and muscle tissue, is involved in various metabolic processes. In addition, magnesium and its biocorrosion products have excellent biocompatibility. The main advantage of magnesium alloys is the positive effect of magnesium on the human body, but their quality does not meet the requirements for their use in the human body. It is possible to increase the properties of magnesium alloys as a result of improving the processes of refining and modification of liquid melt. The technology of modification of cast magnesium alloys of Mg-Zr-Nd system by dispersed graphite powder is proposed. It is shown that the optimal carbon additive in the amount of 0.05 -0.1 wt% C improves the mechanical properties due to grain grinding and additional strengthening of structural components. A complex filter containing equal amounts of magnesite, graphite and limestone is proposed, which provides an increased level of refining of the melt to obtain high quality casting. It is shown that the use of a complex carbon-containing filter provides not only efficient refining of the melt, but also its additional modification. In the structure of the alloy there is an increased amount of intermetallic γ-phase, which increases the microhardness of the structural components of the alloy and improves its physical and mechanical characteristics.

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Section: Research Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

REFINING OF BIOSOLUBLE ALLOY OF Mg-Nd-Zr SYSTEM FOR MANUFACTURE OF IMPLANTS

Shalomeev

Tabunshchyk

Matiukhin

et al. 2022

METAL 2022 Conference Proeedings

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show abstract

“…At various enterprises, these castings are made from complex alloy cast steels (110G1ZL, 300X28H2, 60X2SML, 35KHNL, 34KHNML, 10KHFTBch, etc. ), containing such scarce and expensive elements as nickel, molybdenum, and others, which was not always technically justified and economically justified [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The durability increasing of high-wear cast parts of mining and processing equipment

Shalomeev,

Brykov,

Sheiko

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The analysis of the operation of rapidly wearing parts of the ore-grinding equipment was carried out. It has been established that unloading grates and ladles are fast-wearing parts of layered fracture mills and determine their downtime between repairs. The possibility of improving the mechanical properties of medium-carbon steel 40HL due to the reduction of harmful impurities is shown. The effects of modification with aluminum, vanadium, calcium, and rare earth metals on structural formation, mechanical, and operational properties of steel are investigated. It was established that the complex modification of cast steel 40HL (0.04…0.1% vanadium, 0.15% silicon calcium and 0.15% rare earth metals) allows to significantly increase its mechanical properties and wear resistance. The separate and joint influence of aluminum, vanadium, calcium and rare metals on the austenite grain size and hardening of steel was studied. The proposed modification technology makes it possible to obtain a fine grain, through-hardening of castings and ensure reliable and long-lasting operation of ball mills.

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“…The usage of scandium alloys is currently constrained by their relatively high cost. However, the requirement to reduce the weight and metal consumption of structures allows the prediction of their widespread use in the near future and ensures the creation of a unified welding technology of complex alloyed magnesium alloys with an improved set of properties [31][32][33]. The solution to this urgent problem is the central task of research.…”

Section: Introductionmentioning

confidence: 99%

Casting Welding from Magnesium Alloy Using Filler Materials That Contain Scandium

et al. 2022

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Based on the results achieved in systematic studies of structure formation and the formation of multicomponent phases, a scandium-containing filler metal from system alloy Mg-Zr-Nd for welding of aircraft casting was developed. The influence of scandium in magnesium filler alloy on its mechanical and special properties, such as long-term strength at elevated temperatures, was studied by the authors. It is established that modification of the magnesium alloy with scandium in an amount between 0.05 and 0.07% allows a fine-grained structure to be obtained, which increases its plasticity up to 70% and heat resistance up to 1.8 times due to the formation of complex intermetallic phases and the microalloying of the solid solution. Welding of the aircraft castings made of magnesium alloy with scandium-containing filler material allows obtaining a weld with a dense homogeneous fusion zone and the surrounding area without any defects. The developed filler material for welding surface defects (cracks, chips, etc.) formed during operation on aircraft engine bodies makes it possible to restore cast body parts and reuse them. The proposed filler material composition with an improved set of properties for the welding of body castings from Mg-Zr-Nd system alloy for aircraft engines makes it possible to increase their reliability and durability in general, extend the service life of aircraft engines, and obtain a significant economic effect.

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Microalloyed Magnesium Alloys with High Complex of Properties

Cited by 11 publications

References 0 publications

REFINING OF BIOSOLUBLE ALLOY OF Mg-Nd-Zr SYSTEM FOR MANUFACTURE OF IMPLANTS

REFINING OF BIOSOLUBLE ALLOY OF Mg-Nd-Zr SYSTEM FOR MANUFACTURE OF IMPLANTS

The durability increasing of high-wear cast parts of mining and processing equipment

Casting Welding from Magnesium Alloy Using Filler Materials That Contain Scandium

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