A method of production of sintered strips by electric resistance rolling

Saifullin, R.N.; Natalenko, V.S.

doi:10.1080/09507116.2010.540865

Cited by 5 publications

(3 citation statements)

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“…Authors in [9] proposed the mathematical model of the coating formation on the surface of cylindrical parts with electric contact wire surfacing. In the work of [10], there is a mathematical model of forming of sintered tape reinforced by metal grid for increasing mechanical properties using the electric contact seam welding. Normal contact stresses in thermal deformation zone are determined.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Thermostressed State of Coating Formation at Electric Contact Surfacing of “Shaft” Type Parts

Berezshnaya

Gribkov

Kuznetsov

2016

Advances in Materials Science and Engineering

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The forming of coating at electric contact surfacing is considered. The mathematical model of the coating formation is developed. The method of numerical recurrent solution of the finite-difference form of static equilibrium conditions of the selected elementary volume of coating is used. This model considers distribution of thermal properties and geometric parameters along the thermal deformation zone during the process of electric contact surfacing by compact material. It is found that the change of value of speed asymmetry factor leads to increasing of the friction coefficient in zone of surfacing. This provides the forming of the coating of higher quality. The limitation of the technological capabilities of equipment for electric contact surfacing is related to the size of recoverable parts and application of high electromechanical powers. The regulation of the speed asymmetry factor allows for expanding the technological capabilities of equipment for electric contact surfacing. The nomograms for determination of the stress on the roller electrode and the finite thickness of the coating as the function of the initial thickness of the compact material and the deformation degree are shown.

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Section: Introductionmentioning

confidence: 99%

Investigation of Thermostressed State of Coating Formation at Electric Contact Surfacing of “Shaft” Type Parts

Berezshnaya

Gribkov

Kuznetsov

2016

Advances in Materials Science and Engineering

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“…Previous studies suggest that direct resistance heating is highly promising to achieve the best combination of titanium properties compared to the other conventional oven heating and cooling methods such as water quenching [28][29][30][31][32][33][34]. The resistive heating followed by air-cooling leads to formation of ne martensitic microstructure with mechanical properties superior to the costly bimodal α + β titanium microstructure [28].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Densification and Improvement of Cold Spray Additively Manufactured Ti-6Al-4V Properties via Electro Plastic Treatment

Khalik¹,

Zahiri²,

Masood³

et al. 2023

Preprint

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Large-scale industrial application of additively manufactured (AM) components in general, and specifically cold sprayed additive manufactured (CSAM), is limited due to the nature of this technology and the resulting product’s porosity and embrittlement. To improve the final properties of additive manufactured material, many lengthy, complex, or expensive post-treatments have been proposed. Reducing the environmental impact, cost and time required for additive manufacturing will allow for greater use in industrial applications. A novel thermomechanical treatment known as in-situ electro-plastic treatment (ISEPT) is used in this study to treat CSAM Ti-6Al-4V alloy known as grade 5 titanium. The Ti-6Al-4V alloy has approximately three times the strength and hardness of Commercial Purity Titanium (CP-Ti) with lower ductility and a dual-phase (α + β) microstructure that poses challenges during for the CSAM process. Compared to CP-Ti, the results showed that CSAM Ti-6Al-4V presented double the porosity and triple the number of ISEPT passes that presented ~ 2 µm ultra-fine grain microstructure. The ultrafine structures strength of the ISEPT material was superior to that of CSAM Ti-6Al-4V. The ISEPT passes consolidated the CSAM (α + β) dual-phase Ti-6Al-4V and allowed for nucleation of equiaxed grains at the vicinity of former CSAM splats boundaries. Formation of lamellar colonies within the splat’s inner regions was observed. The role of ISEPT conditions on rapid elimination of porosity and evolution of cold spray splat boundaries via dynamic recrystallization of Ti-6Al-4V were discussed.

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“…In the work [16], there is a mathematical model of a sintered tape formation by reinforced metal lath for increasing mechanical characteristics using the method of electrocontact surfacing. e normal contact stresses in the center of deformation are determined.…”

Section: Introductionmentioning

confidence: 99%

The Finite Element Modulation of Thermostressed State of Coating Formation at Electric Contact Surfacing of “Shaft” Type Parts

Berezshnaya

Gribkov

Borovik

et al. 2019

Advances in Materials Science and Engineering

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The finite element modulation of forming of coating at electric contact surfacing is provided. This model considers distribution of thermal properties and geometric parameters along the thermal deformation zone during the process of electric contact surfacing by tapes. It is found that the change of the value of the speed asymmetry factor leads to increasing of the friction coefficient in the zone of surfacing which is caused by the increasing of the tangential contact stresses in the zone of contact of the electrode tape with the surface of the part. This leads to the forming of the coating with higher adhesion strength, and thereby the higher quality of the restored part under the lower operating regimes such as current pulse, force of the roller electrode, and duration of the current pulse is achieved. Mentioned above allows to decrease the thermal influence on the structure of the material.

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A method of production of sintered strips by electric resistance rolling

Cited by 5 publications

References 0 publications

Investigation of Thermostressed State of Coating Formation at Electric Contact Surfacing of “Shaft” Type Parts

Investigation of Thermostressed State of Coating Formation at Electric Contact Surfacing of “Shaft” Type Parts

Simultaneous Densification and Improvement of Cold Spray Additively Manufactured Ti-6Al-4V Properties via Electro Plastic Treatment

The Finite Element Modulation of Thermostressed State of Coating Formation at Electric Contact Surfacing of “Shaft” Type Parts

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