Prediction of Properties of Metal upon Combined Alloy Processing of the Al–REM System Based on the Stepwise Evaluation of Their Mechanical Properties

Sidelnikov, S. B.; Загиров, Николай Наильич; Lopatina, Ekaterina Sergeevna; Galiev, Roman Ilsurovich; Рудницкий, Э. А.; Voroshilov, Denis Sergeevich; Сидельников, А. С.

doi:10.17073/0021-3438-2015-4-32-37

Cited by 4 publications

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“…To test the studied deformation modes, experimental studies were carried out on the CRE-200 installation, manufactured on the basis of the DUO 200 rolling mill according to the previously developed methodology [10,12,16,17,19,22]. The general technological scheme for producing wire is presented in Fig.…”

Section: Methods Of Carrying Out Researchesmentioning

confidence: 99%

“…2. The mechanical properties were determined using the following equipment: Walter + Bai AG universal electromechanical testing machines LFM 400 kN for rods and LFM 20 kN for wires ("Walter + Bai AG", Switzerland) in accordance with State standard 1497-84 for rods and State standard 10446-80 for wire [10,12,16,17,19,22]. Electrical resistivity ρ was measured on samples 1 m long using a "Vitok" ohmmeter in accordance with State standard 7229-76.…”

Section: Methods Of Carrying Out Researchesmentioning

confidence: 99%

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Development of Combined Machining Modes, Investigation of Mechanical Properties and Structure of Deformed Semi-Finished Products from Alloy 01417

Sidelnikov

Voroshilov

Motkov

et al. 2020

MSF

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The article presents the results of studies on the production of wire with a diameter of 0.5 mm from aluminum alloy 01417 with a content of rare-earth metals (REM) in the amount of 7-9% for aircraft construction needs. The deformation modes, the experimental technique and equipment for the implementation of the proposed technology described. The wire was obtained by drawing and bar rolling with subsequent drawing from a rod with a diameter of 5 mm, obtained previously using the process of combined rolling-extruding (CRE) from a continuous ingot with a diameter of 12 mm, cast in an electromagnetic mold (EMM). The wire obtained by the presented technology was subjected to 4 different heat treatment modes with annealing temperatures from 350 to 500 °C and holding time of 1 h in the furnace to achieve mechanical and electrophysical properties corresponding to TS 1-809-1038-2018. The level of strength and plastic properties obtained in the course of research required only one intermediate annealing. The microstructure of the wire was investigated and the modes were revealed that made it possible to obtain the required level of mechanical properties and electrical resistivity, satisfying TS 1-809-1038-2018.

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Section: Methods Of Carrying Out Researchesmentioning

confidence: 99%

Section: Methods Of Carrying Out Researchesmentioning

confidence: 99%

Development of Combined Machining Modes, Investigation of Mechanical Properties and Structure of Deformed Semi-Finished Products from Alloy 01417

Sidelnikov

Voroshilov

Motkov

et al. 2020

MSF

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“…According to refs. [36,38,67,69,78,79], the achieved heat resistance level of considered steels is ensured by the combined action of substructural (grain and subgrain boundaries, high dislocation density), solid-solution and dispersion hardening (M 23 C 6 carbides and MX carbonitrides). It is known that the creep rate and the time to fracture of steels at high temperatures control the return of the dislocation substructure.…”

Section: Martensitic Transformations In Stainless Steelsmentioning

confidence: 99%

“…At the same time, carbides M 23 C 6 and thermally stable carbonitrides of the MX type are considered as hardening phases, as is shown in many works [1,5,29,36,38,67,69,78,79]. laves phase and z-phase particles are undesirable.…”

Section: Martensitic Transformations In Stainless Steelsmentioning

confidence: 99%

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2022

Prog. Phys. Met.

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in clude high-alloyed white cast irons, high-speed steels (hSSs), highentropy alloys (hEAs), cold-formed die steels, cemented carbide alloys, particle-reinforced metal matrix composites (PMMCs), etc. [7][8][9][10]. A wide range of conventional and innovative technologies are focused to modify a working surface via structural and chemical modi fication as well as coating deposition to create protecting layers of up to several millimetres thick [11][12][13]. however, in many applications, the wearinduced volume loss is much bigger; thus, the parts should be manufactured from special materials ensuring higher bulk wear resistance. the increased requirements for wear-resistant materials imply using non-standard solutions when creating new types of tribological alloys. Multicomponent Cast Ironsone of the relatively new classes of wear-resistant alloys is 'multicomponent cast irons' (MCCIs), which were first proposed by Matsubara with coauthors [14,15] in the mid-1990s to increase the durability of rolls of hot rolling mills. the idea of MCCIs followed the known concept of alloying high-speed steel M2 (AStM A600), which implies the addition of several carbide-forming elements in approximately equal proportions (M2 steel contains 0.78-0.88 wt.% C, 5.50-6.75 wt.% W, 4.50-5.50 wt.% Mo, 3.75-4.50 wt.% Cr, and 1.75-2.20 wt.% V). A basic chemical composition of MCCI is (in wt.%) fe-2 C-5 Cr-5 Mo-5 W-5 V-5 Co [16]. Molybdenum and tungsten (which act similarly) are adopted in MCCIs to form complex carbides (Mo, W, fe) 2 C or M 2 C, and (Mo, W, fe) 6 C or M 6 C, where M denotes a metal (martensite). being dissolved in matrix, Mo and W improve the hardenability and promote the secondary precipitation hardening under tempering (which is important for hot temperature wear applications). Vanadium forms hard eutectic carbides (V, fe)C or (V, fe) 4 C 3 (denoted as MC); also, it takes part in secondary hardening. Chromium is partially dissolved in matrix inhibiting pearlite and bainite transformations, thus, enhancing the hardenability. In addition, Cr contributes to wear resistance through eutectic carbide M 7 C 3 , which is harder than cementite carbide. In their turn, carbides M 2 C, M 6 C, and MC are harder than M 7 C 3 . Cobalt decreases the hardenability but it greatly improves the high-temperature strength suppressing the heat-induced grain coarsening. thus, MCCIs feature a multiphase structure consisting of different hard carbides dispersed in the metallic matrix.the main feature which distinguishes MCCIs from M2-hSS is about two-fold increased carbon content (1.8-2.2 wt.%) [17]. Carbon concentration controls the crystallization path and the set of carbide phases in MCCIs. According to [18], carbon content is selected based on C bal

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Current Trends to Obtain Metals and Alloys with Ultrafine-Grained Structure

2022

Prog. Phys. Met.

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obtaining of materials with the improved and properly balanced physical and mechanical properties remains one of the main goals of materials science. At the same time, one of the most promising ways to improve the properties of metallic materials without changing and complicating their chemical and phase compositions is to obtain ultrafine-grained states within them. Such materials are characterized by high strength and high ductility. this combination of properties is crucially important for responsible products, where the weight and size of the part is important. for example, for medical implants, which, at maintaining the strength, can be made thinner, and, if the load is exceeded, it will not be broken, damaging the surrounding tissues, but will only bend and can be subsequently replaced. Such a combination of the strength and ductility is difficult to be obtained by other methods (e.g., heat treatment). however, for the bulk ultrafine-grained materials, in addition to the requirements for a grain size, there are also requirements for the isotropism and equiaxiality of grains, the misorientation boundaries of which should be predominantly high-angle. traditional deformation technologies (such as drawing and cold rolling) are also accompanied by structure refinement. however, in general, the substructure has a cellular character with grains elongated in the direction of drawing or rolling and contains a high proportion of low-angle boundaries. this fact contributes to the anisotropy of the properties of products in the absence of a combination of properties of high strength and ductility at the same time. over C i t a t i o n: A.b. Naizabekov, A.S. Kolesnikov, M.A. latypova, t.d. fedorova, and A.d. Mamitova, Current trends to obtain Metals and Alloys with Ultrafine-Grained Structure,

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Prediction of Properties of Metal upon Combined Alloy Processing of the Al–REM System Based on the Stepwise Evaluation of Their Mechanical Properties

Cited by 4 publications

References 0 publications

Development of Combined Machining Modes, Investigation of Mechanical Properties and Structure of Deformed Semi-Finished Products from Alloy 01417

Development of Combined Machining Modes, Investigation of Mechanical Properties and Structure of Deformed Semi-Finished Products from Alloy 01417

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Current Trends to Obtain Metals and Alloys with Ultrafine-Grained Structure

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