Fine-grained structure and properties of a Ni2MnIn alloy after a settling plastic deformation

Musabirov, I. I.; Safarov, I. M.; Nagimov, M. I.; Sharipov, I. Z.; Коледов, В. В.; Mashirov, A. V.; Rudskoi, A. I.; Mulyukov, R. R.

doi:10.1134/s1063783416080217

Cited by 13 publications

(5 citation statements)

References 20 publications

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“…al. [17] performed compression testing on off-stoichiometric Ni 2 MnIn at elevated temperatures. At 773 K, the material reached a peak stress of approximately 475 MPa, while at 973 K, the peak stress was reduced below 200 MPa.…”

Section: Main Textmentioning

confidence: 99%

“…al. [17] exhibited deformation of up to approximately 1.5 true strain at 773 K, with significant pores and cracking present in the deformed structure. At 873 K, the material only exhibits a small amount of cracking, but shows significant amounts of dynamic recrystallization of up to 1.8 true strain.…”

Section: Main Textmentioning

confidence: 99%

“…There are also several works that reference mechanical properties which involve non-stoichiometric Heusler alloys. These works include modeling predictions of elastic properties as the chemistry moves from one stable alloy to another [14, 15, 16], as well as doping for improvement in giant magnetocaloric effect [17], thermoelectrics [5, 6], and magnetic shape memory alloys [7, 9, 18].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical properties of Heusler alloys

Everhart

Newkirk

2019

Heliyon

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Heusler alloys have been a significant topic of research due to their unique electronic structure, which exhibits half-metallicity, and a wide variety of properties such as magneto-calorics, thermoelectrics, and magnetic shape memory effects. As the maturity of these materials grows and commercial applications become more near-term, the mechanical properties of these materials become an important factor to both their processing as well as their final use. Very few studies have experimentally investigated mechanical properties, but those that exist are reviewed within the context of their magnetic performance and application space with specific focus on elastic properties, hardness and strength, and fracture toughness and ductility. A significant portion of research in Heusler alloys are theoretical in nature and many attempt to provide a basic view of elastic properties and distinguish between expectations of ductile or brittle behavior. While the ease of generating data through atomistic methods provides an opportunity for wide reaching comparison of various conceptual alloys, the lack of experimental validation may be leading to incorrect conclusions regarding their mechanical behavior. The observed disconnect between the few available experimental results and the numerous modeling results highlights the need for more experimental work in this area.

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Section: Main Textmentioning

confidence: 99%

Section: Main Textmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical properties of Heusler alloys

Everhart

Newkirk

2019

Heliyon

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“…As a result of the relative movements of the two parallel hydraulic cylinders, it becomes possible to move the clamping jaws both in a straight line and at an angle within the limits determined by the actions of the connecting rod mechanism. Eight programmable coordinates formed by moving the rods of the hydraulic cylinders from each side of the press table are simultaneously controlled by a special software control system with feedback (Izamshah et al, 2011;Musabirov et al, 2016;Ivanov, 2018). Collapsible presses with (numerical program management) CNC provide realization of various kinematic schemes of forming by the tightness of a shell of the complex spatial form.…”

Section: Introductionmentioning

confidence: 99%

The System of Informational Choice of the Kinematic Scheme for the Formation of Shells of a Complex Spatial Form

Mikheev¹,

Grechnikova²,

Roslyakov³

et al. 2019

Int J Math, Eng, Manag Sci

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Three kinematic schemes are studied, which differ from one another in the route of technological operations. Each of these kinematic schemes has its own set of power stages of shaping and stages of free bending or bending of the ends of the sheet blank. In addition, the quantitative values of the angular parameters of a particular kinematic scheme are determined. Numerical experiments have been carried out, which give complete information about the distribution of the shell thickness as discrete values in one or another element. The result is statistical processing of this information, the scope of the predicted values and comparison with the tolerance on the thickness of the peel used in aviation enterprises.

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“…При этом необходимо учитывать влияние пластической деформации на микроструктуру интерметаллида, а так-же влияния температурно-скоростных условий на пла-стическую деформацию [26,27].…”

Section: Introductionunclassified

The stress-strain state and the microstructure in disk-shaft solid-phase bonds of dissimilar nickel-based alloys

Валитов¹,

Akhunova²,

Galieva³

et al. 2017

LoM

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Finite-element calculations have been carried out to determine the strain distribution formed during welding by a combination of pressure and shear in samples imitating the constituent parts of a "disk-shaft" type gas-turbine engine bimetallic component made of heterophase nickel-based superalloys. A physical simulation of this process has also been carried out. Computer simulations were accomplished using a two-dimensional axysymmetric model by means of DEFORM-2D package. EP975 and EK79 alloys with ultrafine-grained (UFG) structure were chosen as the materials for the disk and shaft, respectively. The initial strain rate was 10 -5 s -1, and the welding temperature 1100°C. The behavior of materials was described by experimental curves obtained for EP975 and EK79 alloys under a uniaxial compression at the welding temperature. According to known experimental data, shear strain near the welded surfaces improves the solid-phase bond quality and strength. Additionally, the solid-phase bond quality is enhanced by grain refinement, which leads to an increase of the area of grain boundaries and to accelerated grain boundary diffusion. The results of computer simulations have revealed that in order to increase the area of regions with large shear strain values one has to increase the displacement of the shaft relative to the disk. From physical simulation, it has been concluded that a high quality solid-phase bond formation is promoted by a small shear strain of EK79 and EP975 alloys with UFG structure under superplasticity conditions. Basing on the studies carried out, a possibility of obtaining a "disk-shaft" type part from EP975 and EK79 nickel alloys with a preliminarily processed UFG structure using solid-phase bonding by means of pressure and shear welding has been shown.

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Fine-grained structure and properties of a Ni2MnIn alloy after a settling plastic deformation

Cited by 13 publications

References 20 publications

Mechanical properties of Heusler alloys

Mechanical properties of Heusler alloys

The System of Informational Choice of the Kinematic Scheme for the Formation of Shells of a Complex Spatial Form

The stress-strain state and the microstructure in disk-shaft solid-phase bonds of dissimilar nickel-based alloys

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