Izvestiya vysshikh uchebnykh zavedenii. Fizika最新文献_第10页

Formation of microstructures and mechanical characteristics in electron beam additive manufacturing of an aluminum bronze with in-situ adjusting the heat input 原位调节热输入电子束增材制造铝青铜微结构的形成及力学特性

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/5/45

S. Tarasov, E. Kolubaev, N. Savchenko, D.A. Girianov, E. Moskvichev, A. Vorontsov, S. Nikonov, A. Chumaevskii, A. Panfilov, A. Zykova

{"title":"Formation of microstructures and mechanical characteristics in electron beam additive manufacturing of an aluminum bronze with in-situ adjusting the heat input","authors":"S. Tarasov, E. Kolubaev, N. Savchenko, D.A. Girianov, E. Moskvichev, A. Vorontsov, S. Nikonov, A. Chumaevskii, A. Panfilov, A. Zykova","doi":"10.17223/00213411/65/5/45","DOIUrl":"https://doi.org/10.17223/00213411/65/5/45","url":null,"abstract":"Microstructure and mechanical characteristics of aluminum bronze fabricated using electron beam additive manufacturing (EBAM) under adjusting the heat input as a function of the sample’s height have been investigated. It was shown that such an adjustment of the heat input had effect on the dendrite grain size and morphology as well as mechanical characteristics. Columnar high aspect ratio grains were formed during deposition at maximum heat input values. The columnar grain width in section parallel to the deposition direction was increasing in EBAM conducted at lower heat input. Tensile static testing showed that the tensile strength values were improving from 435 to 483 MPa in the process. Some moderate degree of anisotropy has been revealed between samples oriented by their tensile axes parallel and perpendicular to the deposition direction. Samples with tensile axes parallel to the deposition direction showed higher tensile strength and less plasticity as compared to those of samples with perpendicular orientations of their tensile axes. In addition, the heat input adjustment had no effect on the mean width of columnar grains measured in a section perpendicular to the deposition direction.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91200736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Influence of the helical rolling and controlled cooling to impact toughness of titanium alloy Ti-6Al-3Mo 螺旋轧制和控制冷却对Ti-6Al-3Mo钛合金冲击韧性的影响

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/5/22

A. E. Kuznetsova, E. Naydenkin, A. Yakovlev, J. Gomorova, I. Vlasov

{"title":"Influence of the helical rolling and controlled cooling to impact toughness of titanium alloy Ti-6Al-3Mo","authors":"A. E. Kuznetsova, E. Naydenkin, A. Yakovlev, J. Gomorova, I. Vlasov","doi":"10.17223/00213411/65/5/22","DOIUrl":"https://doi.org/10.17223/00213411/65/5/22","url":null,"abstract":"The paper studies the evolution of the structure, phase composition, and impact toughness of the Ti-6Al-3Mo titanium alloy after two types of processing, one of them is included heating and hot helical rolling with quenching in water (mode I). The additional air quenching is used between the rolling and quenching processes in mode II. This approach with combining two cooling stages (in air and in water) of the alloy makes possible to control the recrystallization time and form a gradient structure over the cross-section of the bar stock. The processing of titanium alloy according to mode I lead to decrease of impact strength. The addition of air-cooling stage (in mode II) leads to insignificant decrease hardness and increase toughness of alloy. The treatment by mode I and II of the titanium alloy lead to formation of the structure which contain large grains of the primary α-phase in thin-plate structure of the secondary α-phase in the β-phase. It is shown that the obtained structure states of alloy affect to crack propagation under impact loading and changing the amount of energy which spent to the complete destruction of the samples.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81607082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of double cascades by the bee colony algorithm for purification of regenerated uranium hexafluoride from isotopes232, 234, 236U 用蜂群算法优化双级联提纯同位素232,234,236u再生六氟化铀

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/5/56

S. S. Lubnin, E. Maslyukov, V. Palkin

{"title":"Optimization of double cascades by the bee colony algorithm for purification of regenerated uranium hexafluoride from isotopes232, 234, 236U","authors":"S. S. Lubnin, E. Maslyukov, V. Palkin","doi":"10.17223/00213411/65/5/56","DOIUrl":"https://doi.org/10.17223/00213411/65/5/56","url":null,"abstract":"We propose a double cascade scheme for reducing the concentration of232, 234, 236U isotopes in regenerated uranium hexafluoride. In the product of the first ordinary cascade the greatest decrease in the236U /235U mass ratio with enrichment in235U to a concentration of less than 20% is provided. To ensure the required concentrations, a special mode of operation of the stages. In the second ordinary cascade, which is fed by the product of the first, enrichment in isotopes232,234U is performed. The waste flow, purified from232, 234U, is diluted to a concentration of235U less than 5%. A method for calculating the parameters of cascades with stage separation factors corresponding to gas centrifuges is presented. A computational experiment was carried out on its basis. It was shown that the product obtained after dilution with respect to isotopes232, 234U meets the requirements of the ASTM C996-20 specification for the low-enriched commercial grade of uranium hexafluoride. The content of236U in it is several times lower than in the case of direct enrichment of regenerated uranium hexafluoride.","PeriodicalId":14647,"journal":{"name":"Izvestiya vysshikh uchebnykh zavedenii. Fizika","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87305209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electric arc plasma-chemical synthesis of the β-SiAlON phase β-SiAlON相的电弧等离子体化学合成

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/5/128

A. Klopotov, V. Shekhovtsov, G. Volokitin, O. Volokitin, K. Bezukhov

引用次数: 0

Powerful pulsed titanium ion beams formation of submillisecond duration from vacuum arc plasma 从真空电弧等离子体形成亚毫秒持续时间的强大脉冲钛离子束

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/11/138

A. Ryabchikov, S. Dektyarev, O. Korneva, D. Vakhrushev

引用次数: 0

Methods for plasma density estimations in large-volume hollow anode 大体积空心阳极等离子体密度的估计方法

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/7/112

N. Landl, Y. Korolev, A. Kozyrev, I. Lopatin

引用次数: 0

Dynamics of controlled streamer discharge at low air pressures 低气压下可控流线型放电动力学

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/7/119

E. Sosnin, V. Panarin, V. Skakun, E. Baksht, V. Kuznetsov, D. Sorokin

引用次数: 0

Analytical solution of the Schrödinger equation for the linear combination of the Hulthén and the class of Yukawa potentials hulthsamn和Yukawa势类线性组合Schrödinger方程的解析解

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/1/9

G. Bayramova

引用次数: 0

The production of a chargino pair in muon colliders (I) 介子对撞机中电荷对的产生(一)

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/5/95

A.K. Gulayeva, M. Gojayev, S. Abdullayev

引用次数: 0

Some features of temperature and strain rate sensitivity dependences of plastic flow of functional magnesium alloys 功能镁合金塑性流动的温度和应变率敏感性特征

Izvestiya vysshikh uchebnykh zavedenii. Fizika Pub Date : 2022-01-01 DOI: 10.17223/00213411/65/9/8

K. Kudasheva, M. Linderov, A. Brilevsky, A. Danyuk, I. Yasnikov, D. Merson

引用次数: 0