Development of new casting magnesium-based alloys with increased mechanical properties

Shalomeev, V.; Tsivirco, Eduard; Vnukov, Yuri; Osadchaya, Yekaterina; Makovskyi, S

doi:10.15587/1729-4061.2016.73384

Cited by 7 publications

(7 citation statements)

References 6 publications

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“…If this ratio is larger, the binding energy of the solvent atoms and alloying elements is reduced, and, as a consequence of the curvature of the crystal lattice, solubility of alloying elements is decreased. Another important condition for the solubility of an element in the base metal, according to [31], is the difference in the electronegativities of elements that should not exceed 0.2...0.4.…”

Section: Selecting the Alloying System And Analysis Into The Influmentioning

confidence: 99%

Design and examination of the new biosoluble casting alloy of the system Mg–Zr–Nd for osteosynthesis

Shalomeev¹,

Aikin²,

Chorniy³

et al. 2019

EEJET

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Section: Selecting the Alloying System And Analysis Into The Influmentioning

confidence: 99%

Design and examination of the new biosoluble casting alloy of the system Mg–Zr–Nd for osteosynthesis

Shalomeev¹,

Aikin²,

Chorniy³

et al. 2019

EEJET

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“…Complex alloyed solid solutions are formated in the result of the dissolubility of the elements in Magnesium with definite proximity of their atomic diameters, which according to Hume-Rothery [6], should be differ not more than 15 %. If this rule is not followed, there is a decrease of the binding energy of atoms of the dissolvent and alloying elements and due to the distortion of the crystal lattice of the matrix their dissolubility decreases.…”

Section: Strengthening Of Metals and Alloys By Disperse Particlesmentioning

confidence: 99%

High-quality magnesium-based alloys with improved properties for engineering

Shalomeev¹,

Tsivirko²,

Aikin³

2019

Innovative Materials and Technologies in Metallurgy and Mechanical Engineering

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Purpose. To give a theoretical analysis and a reasonable choice of the main alloying elements for the development of magnesium alloys with a high level of properties. Methods of research. Metallographic and X-ray research methods. Determination of mechanical properties under tension (GOST 1497-84) and long-term strength at elevated temperatures (GOST 9651-84). Results. It is shown the relationship between the state diagrams and the melting point of the selected alloying elements with the heat resistance of magnesium alloys. Perspective elements for improvement of the heat resistance of Magnesium alloys are Nd, Ge, Ag, Y, Sc, Zr, Si, Ti and Hf. These elements form complex intermetallic phases, differed by topology and morphology. Under their influence macro-and micrograins of metal are grinded and the microhardness of structural components increases. As the content of alloying elements in the alloy increased, the size of spherical intermetallides grew, general number of the intermetallides increased and the strength and durability of the alloy improved. It has been established that the heat resistance of Magnesium alloys depends first on the number of thermal resistant intermetallic phase, the content of which related to the melting temperature of alloying elements. Scientific novelty. Based on an analysis of binary phase diagrams and the atomic-electronic structure of the elements, it was determined a number of alloying elements that provide the best combination of mechanical and heatresistant properties of cast magnesium alloys. Practical value. The use of new Magnesium alloys with high complex of mechanical properties and heat-resistance increased reliability and durability of structural components and parts used in different industries, such as engineering and aircraft engines manufacture.

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“…Alloys of the Mg-Zr-Nd system are promising materials for the production of various molded parts in aerospace engineering [25,26]. They have a fine-grained structure, high physical and mechanical properties, and heat resistance, but have a tendency to crystallize cracks [26,27].…”

Section: Introductionmentioning

confidence: 99%

“…This welding technique does not produce a high-quality weld. Defects such as micro-cracks and micro-pores can appear in the weld and seam area [25,28].…”

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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Development of new casting magnesium-based alloys with increased mechanical properties

Cited by 7 publications

References 6 publications

Design and examination of the new biosoluble casting alloy of the system Mg–Zr–Nd for osteosynthesis

Design and examination of the new biosoluble casting alloy of the system Mg–Zr–Nd for osteosynthesis

High-quality magnesium-based alloys with improved properties for engineering

Casting Welding from Magnesium Alloy Using Filler Materials That Contain Scandium

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