OBTAINING OF UFG STRUCTURE OF Zr-1% Nb ALLOY BY RADIAL-SHEAR ROLLING

Arbuz, Alexandr; Kawałek, A.; Ozhmegov, Kirill; Daniyeva, Nurgul; Panin, Evgeniy

doi:10.37904/metal.2020.3485

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…RSR-related research is mostly dedicated to the formation of the structure and properties of the round billets of different materials: titanium and its alloys [6][7][8][9], copper and its alloys [10,11], magnesium alloys [12][13][14][15][16], nickel alloys [17], zirconium alloys [18], aluminum and its alloys [19,20], and steels of different chemical compositions for various applications [21][22][23][24][25][26]. The combination of RSR with other metal-forming techniques is effective in terms of distinctive features formation.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Kinematic Condition of Radial Shear Rolling and Estimation of Its Influence on a Titanium Billet Microstructure

Skripalenko

Karpov²,

Рогачев

et al. 2022

Materials

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The finite element method (FEM) computer simulation of the three-high radial shear rolling of Ti-6Al-4V alloy round billets was conducted using QForm software. The simulation was performed for the MISIS-100T rolling mill’s three passes according to the following rolling route: 76 mm (the initial billet diameter) →65 mm→55 mm→48 mm (the final billet diameter). The change in the total velocity values for the points on the radius of the 48 mm diameter billet was estimated while passing the rolls’ draft. The relative increase in the accumulated strain was estimated for the same points. Then, experimental shear rolling was performed. Grain sizes of the α- and β-phases were estimated in the cross section of the final billet at the stationary stage of rolling. The grain size distribution histograms for different phases were plotted. An area was found in the billet’s cross section in which the trend of change in the total velocity of the points changed. This area represented a neutral layer between the slowing peripheral segments of the billet and the accelerating central segments of the billet. Inside this neutral layer, the limits of the cylindrical surface radius value were estimated. Experimental radial shear rolling was performed to compare the experimental rolling results (the billet microstructure investigation) with the computer simulation results. The computer simulation obtained two estimations of the radius limits: 8–16 mm (based on the analysis of the total velocity change) and 12–16 mm (based on the accumulated strain’s relative increment change). The experimental rolling obtained two more estimations of the radius limits: 8.4–19.5 mm and 11.3–19.7 mm—based on the results of the microstructure investigation. It was confirmed that varying the kinematic and deformation parameters of radial shear rolling allows regulation of the thickness of the peripheral fine-grain layer and the diameter of the central coarse-grain layer of the rolled billets.

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Section: Introductionmentioning

confidence: 99%

Simulation of the Kinematic Condition of Radial Shear Rolling and Estimation of Its Influence on a Titanium Billet Microstructure

Skripalenko

Karpov²,

Рогачев

et al. 2022

Materials

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Research of Three-High Screw Rolling of Aluminum Billets with Copper Inserts at Different Rolls Feed Angles

Skripalenko,

Rogachev,

Bazhenov

et al. 2023

Metals

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Three-high screw-rolling of aluminum alloy ingots was carried out at 12- and 20-degrees rolls feed angles. The ingots had two copper, cylindrical inserts oriented along the ingot axis: the center of one insert coincided with the ingot’s center, and the center of the other insert coincided with the ingot’s half-radius. The effect of the rolls feed angle value on the aluminum and copper microstructure as well as the hardness formation was established. X-ray study and three-dimensional modeling allowed the copper insert twisting angle to be estimated along the rolled billet axis. It also allowed detection of the number of breaks of the insert located in the ingot’s center and the insert located in the ingot’s half-radius depending on the rolls feed angle value.

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OBTAINING OF UFG STRUCTURE OF Zr-1% Nb ALLOY BY RADIAL-SHEAR ROLLING

Cited by 2 publications

References 17 publications

Simulation of the Kinematic Condition of Radial Shear Rolling and Estimation of Its Influence on a Titanium Billet Microstructure

Simulation of the Kinematic Condition of Radial Shear Rolling and Estimation of Its Influence on a Titanium Billet Microstructure

Research of Three-High Screw Rolling of Aluminum Billets with Copper Inserts at Different Rolls Feed Angles

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