Prefacedoi: 10.1088/1757-899X/889/1/011001pmid: N/A
Valery Dyadichev*1V.I. Vernadsky Crimean Federal University, Simferopol, Crimea, Russia*[email protected] Scientific Practical Conference «Materials science, shape-generating technologies and equipment 2020» (ICMSSTE 2020) was held in Yalta, Russia from 25 to 29 May 2020.ICMSSTE 2020 is organized by the: Federal State Autonomous Educational Institution of Higher Education «V. I. Vernadsky Crimean Federal University»; Federal State Autonomous Educational Institution of Higher Education «Sevastopol State University»; Federal State Autonomous Educational Institution of Higher Education «Polzunov Altai State Technical University»; Limited Liability Company “Engineering Centre The Best Available Technologies”.The Conference provides scientists, industry experts and business representatives from various countries with the opportunity to summarize and share innovative and latest scientific research developments in materials science, material properties, new materials and products manufacturing technologies, industrial equipment and tools, to discuss the development of nanomaterials and nanotechnologies, new equipment and technologies.
Peer review statementdoi: 10.1088/1757-899X/889/1/011002pmid: N/A
All papers published in this volume of IOP Conference Series: Materials Science and Engineering have been peer reviewed through processes administered by the proceedings Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.
Study of diffusion oxide hardening on intermetallic materialsChekalova, Elena; Zhuravlev, Andrey
doi: 10.1088/1757-899X/889/1/012001pmid: N/A
In the last decade, there has been a tendency to increase the use of titanium ortho-alloys on an intermetallic basis for the manufacture of critical parts. The technology of diffusion oxide hardening on intermetallic materials to increase hardness is proposed. The results of a metallographic study of the structure and phase composition of diffusion oxide hardening are presented. According to the results, the hardness of the VIT-1 intermetallic material in the initial state is 1250 MPa, and with hardening it is 1563 MPa, which is 25% higher than the base material.
The x-ray diffraction study of the composition of the powder materials from the waste steel X13Ageeva, E.V.; Khardikov, S.V.; Novikov, A. N.
doi: 10.1088/1757-899X/889/1/012002pmid: N/A
To restore and protect the surfaces of parts using a layer of molten metal, various methods of surfacing are used, differing from each other by melting methods and compositions of the welding medium: electric arc, flame, plasma, laser, induction, etc. With this technology, metals of various chemical composition, including copper, bronze, cast iron, as well as nickel, cobalt and chromium alloys can be deposited on the working surfaces of steel structures. There are several ways to obtain such powder materials. The most promising method for obtaining powder materials is the electro-erosion dispersion method (EED), which is distinguished by its ecological purity of the process and relatively low energy expenditure. To study the structure of the particles of the obtained powders, their X-ray structural analysis was performed on a RigakuUltima IV X-ray diffractometer.
X-ray diffraction analysis of sintered products from electro-erosion materials, obtained from Cr17 alloy wasteSysoev, A A; Grashkov, SA; Pivovar, NA
doi: 10.1088/1757-899X/889/1/012003pmid: N/A
This article presents the phase composition study of sintered samples from electro-erosion materials of the Cr17 alloy, obtained in lighting kerosene. It was established that the main phases in the sintered sample are FeCr0,29Ni0,16C0,06, Cr, Cr7C3.
Texture and anisotropy of the mechanical properties of 2 mm sheets of Mg-9Li-3Al-0.4Ce alloyYa Betsofen, S; Grushin, I A; Petrov, A A; Speransky, K A
doi: 10.1088/1757-899X/889/1/012004pmid: N/A
The phase composition, texture and anisotropy of the mechanical properties of 2 mm sheets of Mg-9Li-3Al-0.4Ce alloy were studied by X-ray diffraction and mechanical tests. It is shown that the alloy contains two solid solutions, the α phase with HCP lattice based on Mg and the β phase with BCC lattice based on Li. Intermetallic Al12Mg17 is also present in the alloy. Alloy sheets are characterized by a basal α-phase texture. At the same time, the most durable prismatic orientations are mainly located in the transverse rolling direction (TD), which leads to higher strength properties in this direction compared to the rolling direction (RD). The texture of the basicβ-phase in RD and TD does not differ and, accordingly, does not contribute to the anisotropy of strength properties.
Oxide films resistance to hydrogen penetration in VT6 titanium alloyGvozdeva, O N; Shalin, A V; Stepushin, A S
doi: 10.1088/1757-899X/889/1/012005pmid: N/A
The ability of hydrogen to penetrate through the oxide film formed during air-atmosphere annealing at elevated temperatures on VT6 titanium alloy samples was studied in this paper. It was investigated that oxide film prevents the penetration of up to 0.4 wt.% hydrogen. It was shown that it is possible to change the depth of hydrogen penetration and the surface layer structure by varying the amount of added hydrogen. It was determined that the formation of a finely dispersed surface structure after the thermal hydrogen treatment allows to increase the surface hardness by 8-10 HRC, compared to the center of material.