The Influence of Synthesis Modes on Operational Properties of Oxide Ceramic Coatings on Aluminum Alloys

Imbirovych, Nataliya; Povstyanoy, Oleksandr; Zaleta, Olha; Shymchuk, Sergey; Priadko, Olga

doi:10.1007/978-3-030-77719-7_53

Cited by 10 publications

(2 citation statements)

References 14 publications

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“…The fracture surface of the 300 o C-treated sample (Fig. 5a) consists of the facets of quasi-cleavage alternating with the areas of the dimples (with the microvoids of less than 1 μm diameter) which are characteristic of the ductile rapture [29,31]. The fracture surface of the 350 o C-treated samples performs the same pattern with a higher fraction of the "dimple" areas (Fig.…”

Section: Resultsmentioning

confidence: 82%

Effect of Austempering Parameters on Microstructure and Tensile/Impact Behaviours of Micro-Alloyed TRIP-Assisted Steel

Zurnadzhy,

Efremenko,

Halfa

et al. 2023

MSF

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The article is aimed at studying the effect of austempering temperature below and above Ms temperature on the phase-structural state and mechanical properties of 0.2 wt.% C TRIP-assisted steel micro-added with Nb, V, Mo, Cr. The samples were austenitized at a temperature close to the Ac3 point (900 °C) and held at 300 °C (below Ms), 350 °C (close to Ms) and 400 °C (above Ms) for 5-20 min. The work was performed using optical microscopy (OM), transmission electron microscopy (TEM), X-ray diffraction, and tensile/impact testing. It was found that austempering at the aforementioned modes ensures the multiphase structure consisting of carbide-free bainite, tempered martensite, ferrite and retained austenite (in different combinations). The optimal was austempering at a temperature close to Ms which provided an advanced complex of tensile properties (PSE of 23.9 GPa×%) and V-notched impact toughness (95 J/cm2). TRIP-effect contributed to these properties while the strain hardening process tended to be prolonged with increasing the austempering temperature.

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Section: Resultsmentioning

confidence: 82%

Effect of Austempering Parameters on Microstructure and Tensile/Impact Behaviours of Micro-Alloyed TRIP-Assisted Steel

Zurnadzhy,

Efremenko,

Halfa

et al. 2023

MSF

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“…In this context, the eutectic particles are preferred because they are finer, more numerous, and located much closer to each other, which increases the extent of the “shadow zone” in the matrix. Moreover, due to their small size, the eutectic inclusions are less prone to chipping and spalling-off [ 61 , 65 ]. The appearance of large primary inclusions of M 2 (B,C) 5 is accompanied by a decreasing number of “Chinese-script” eutectic particles, which deteriorates the protection of the matrix from abrasion.…”

Section: Discussionmentioning

confidence: 99%

Investigations of Abrasive Wear Behaviour of Hybrid High-Boron Multi-Component Alloys: Effect of Boron and Carbon Contents by the Factorial Design Method

et al. 2023

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This paper is devoted to the evaluation of the “three-body-abrasion” wear behaviour of (wt.%) 5W–5Mo–5V–10Cr-2.5Ti-Fe (balance) multi-component (C + B)-added alloys in the as-cast condition. The carbon (0.3 wt.%, 0.7 wt.%, 1.1 wt.%) and boron (1.5 wt.%, 2.5 wt.%, 3.5 wt.%) contents were selected using a full factorial (32) design method. The alloys had a near-eutectic (at 1.5 wt.% B) or hyper-eutectic (at 2.5–3.5 wt.% B) structure. The structural micro-constituents were (in different combinations): (a) (W, Mo, and V)-rich borocarbide M2(B,C)5 as the coarse primary prismatoids or as the fibres of a “Chinese-script” eutectic, (b) Ti-rich carboboride M(C,B) with a dispersed equiaxed shape, (c) Cr-rich carboboride M7(C,B)3 as the plates of a “rosette”-like eutectic, and (d) Fe-rich boroncementite (M3(C,B)) as the plates of “coarse-net” and ledeburite eutectics. The metallic matrix was ferrite (at 0.3–1.1 wt.% C and 1.5 wt.% B) and “ferrite + pearlite” or martensite (at 0.7–1.1 wt.% C and 2.5–3.5 wt.% B). The bulk hardness varied from 29 HRC (0.3 wt.% C–1.5 wt.% B) to 53.5 HRC (1.1 wt.% C–3.5 wt.% B). The wear test results were mathematically processed and the regression equation of the wear rate as a function of the carbon and boron contents was derived and analysed. At any carbon content, the lowest wear rate was attributed to the alloy with 1.5 wt.% B. Adding 2.5 wt.% B led to an increase in the wear rate because of the appearance of coarse primary borocarbides (M2(B,C)5), which were prone to chipping and spalling-off under abrasion. At a higher boron content (3.5 wt.%), the wear rate decreased due to the increase in the volume fraction of the eutectic carboborides. The optimal chemical composition was found to be 1.1 wt.% C–1.5 wt.% B with a near-eutectic structure with about 35 vol.% of hard inclusions (M2(B,C)5, M(C,B), M3(C,B), and M7(C,B)3) in total. The effect of carbon and boron on the abrasive behaviour of the multi-component cast alloys with respect to the alloys’ structure is discussed, and the mechanism of wear for these alloys is proposed.

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Effect of Ti-Zr Ligature on Microstructure and Mechanical Properties of Automotive Silumin

Berladir

Говорун

Botko

et al. 2022

Lecture Notes in Mechanical Engineering

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The Influence of Synthesis Modes on Operational Properties of Oxide Ceramic Coatings on Aluminum Alloys

Cited by 10 publications

References 14 publications

Effect of Austempering Parameters on Microstructure and Tensile/Impact Behaviours of Micro-Alloyed TRIP-Assisted Steel

Effect of Austempering Parameters on Microstructure and Tensile/Impact Behaviours of Micro-Alloyed TRIP-Assisted Steel

Investigations of Abrasive Wear Behaviour of Hybrid High-Boron Multi-Component Alloys: Effect of Boron and Carbon Contents by the Factorial Design Method

Effect of Ti-Zr Ligature on Microstructure and Mechanical Properties of Automotive Silumin

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