Russian Journal of Non-Ferrous Metals最新文献_第9页

Influence of Parameters of Melt Processing by Nanosecond Electromagnetic Pulses on the Structure Formation of Cast Aluminum Matrix Composites 纳秒电磁脉冲熔体加工参数对铸铝基复合材料组织形成的影响

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S1067821222040058

V. B. Deev, E. Kh. Ri, E. S. Prusov, M. A. Ermakov, E. D. Kim

{"title":"Influence of Parameters of Melt Processing by Nanosecond Electromagnetic Pulses on the Structure Formation of Cast Aluminum Matrix Composites","authors":"V. B. Deev, E. Kh. Ri, E. S. Prusov, M. A. Ermakov, E. D. Kim","doi":"10.3103/S1067821222040058","DOIUrl":"10.3103/S1067821222040058","url":null,"abstract":"The work is aimed at establishing the effect of nanosecond electromagnetic pulses (NEPs) with different amplitudes on the formation of the structure of cast aluminum matrix composites of the pseudo-binary Al–Mg2Si system with hypoeutectic (5 wt % Mg2Si) and hypereutectic (15 wt % Mg2Si) composition. With an increase in the amplitude of the generator of NEPs in alloys with 5 and 15 wt % Mg2Si, the structural components of the matrix alloy (α-solid solution and eutectic) are refined, while no significant differences in the sizes and morphology of primary crystals of Mg2Si in the hypereutectic range of compositions were observed in the entire range of tested variants of the amplitude of the generator of NEPs. Presumably, the observed nature of the influence of NEPs on the structure of composites in the hypereutectic region of compositions is associated with the features of their crystallization behavior. The temperature range of the existence of the two-phase region L + Mg2Si is much lower than the temperatures of irradiation with NEPs; apparently, in connection with this, NEPs do not affect the thermodynamic state of the interfaces “primary crystal Mg2Si–melt.” It has been shown that a promising option for the simultaneous modifying effect on all structural components of Al–Mg2Si aluminum matrix composites (solid solution, eutectic, primary Mg2Si particles) is a combination of thermal-rate treatment and irradiation of melts with NEPs, as well as additional processing of melts by NEPs during solidification.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"63 4","pages":"392 - 399"},"PeriodicalIF":0.8,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4322324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrometallurgical Processing of Spent Zinc-Manganese Batteries 废锌锰电池的湿法冶金处理

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S1067821222040095

E. B. Kolmachikhina, K. D. Naumov, D. I. Bludova, S. A. Sap’yanov, V. G. Lobanov, Z. M. Golibzoda

{"title":"Hydrometallurgical Processing of Spent Zinc-Manganese Batteries","authors":"E. B. Kolmachikhina, K. D. Naumov, D. I. Bludova, S. A. Sap’yanov, V. G. Lobanov, Z. M. Golibzoda","doi":"10.3103/S1067821222040095","DOIUrl":"10.3103/S1067821222040095","url":null,"abstract":"In this paper, the possibility of processing zinc-manganese batteries in alkaline solutions is studied. It is shown that three-stage washing can remove potassium chloride from the active mass of milled batteries. The regularities of influence of some parameters (temperature, amount of alkali and number of cycles) on the extraction of zinc into solution during alkaline leaching of a mixture of salt and alkaline batteries are established. The reason for the low extraction of zinc from this material is the presence of zinc and manganese compounds as heterolite and hydroheterolite that are difficult to dissolve in alkalis. It is found that, with an increase in the concentration of NaOH from 100 to 205 g/dm3, zinc extraction increases by 2.6 times, but a further increase in the concentration of NaOH, as well as an increase in temperature in the range of 30–85°C, does not affect the zinc extraction into solution. The optimal process parameters of leaching of salt and alkaline batteries at duration of 30 min and pulp density of 200 g/dm3 are determined as follows: temperature of 30°C, NaOH concentration of 390 g/dm3. Conducting experiments on the accumulation of zinc ions with repeated filtrate coursing for leaching shows that, upon increasing the concentration of alkali to 390 g/dm3, owing to cyclic treatment of solutions, it is possible to transfer the maximum possible amount of zinc into the solution without increasing the NaOH consumption. The zinc concentration in solutions after leaching was equal to 59 g/dm3, and the NaOH concentration was 300 g/dm3. The obtained solutions can be directed to zinc electrowinning and after that be returned for leaching.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"63 4","pages":"361 - 368"},"PeriodicalIF":0.8,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4325296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Novel Fabrication Approach for Ceramic Tiles from Red Mud and Steel Slag 赤泥和钢渣制备陶瓷砖的新方法

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S1067821222040083

Haitao Liu, Hengyao Dang, Wei Wang

引用次数: 0

Influence of High-Energy Ball Milling on the Microstructure, Phase Composition, and Microhardness of the Al–Mn–Cu Alloy 高能球磨对Al-Mn-Cu合金显微组织、相组成和显微硬度的影响

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S1067821222040137

O. A. Yakovtseva, A. S. Prosviryakov, V. V. Cheverikin, E. N. Zanaeva, A. V. Mikhaylovskaya

{"title":"Influence of High-Energy Ball Milling on the Microstructure, Phase Composition, and Microhardness of the Al–Mn–Cu Alloy","authors":"O. A. Yakovtseva, A. S. Prosviryakov, V. V. Cheverikin, E. N. Zanaeva, A. V. Mikhaylovskaya","doi":"10.3103/S1067821222040137","DOIUrl":"10.3103/S1067821222040137","url":null,"abstract":"The influence of the treatment time in a planetary ball mill on the morphology, phase composition, and microstructure of the Al–Mn–Cu-based alloy and the same alloy with nanodiamond particles is studied by X-ray diffraction and scanning electron microscopy. The phase composition of the alloy is determined by X-ray diffraction after casting and milling for 5–20 h. It is shown that nanodiamond particles contribute to the coarsening of granules. The effect was intensified with an increase in the milling time to 20 h. The granular size weakly depends on the processing time for the initial alloy. The Cu-bearing phases of solidification origin are dissolved during milling. The lattice parameter of the aluminum solid solution decreases after five hours of treatment to 0.4028–0.4030 nm, and it increases with further increase in milling time. Exothermic peaks associated with the precipitation of secondary phases are revealed for mechanically alloyed granules during heating. An increase in the milling time reduces the intensity of peaks. The solidus temperature of the alloys decreases after mechanical alloying. For the nanodiamond-bearing sample, a high-temperature exothermic effect, which can be associated to the formation of aluminum carbides or oxidation reactions in nanodiamond particles, is observed. The maximum microhardness is achieved after 5–10 h of milling, and the nanodiamond particles slightly increase the maximum microhardness from 316 to 330 HV. The results indicate the dissolution of copper and manganese in the aluminum solid solution during milling for 5 h and their precipitation with increasing milling time. Nanodiamond particles do not influence the dissolution of elements but accelerate the solid solution decomposition with increasing milling time.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"63 4","pages":"426 - 433"},"PeriodicalIF":0.8,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4325062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analysis of Temperature-Deformation Conditions for Rolling Aluminum Alloy Al–Mg–Sc Based on FEM Modeling 基于有限元模型的Al-Mg-Sc铝合金轧制温度变形条件分析

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S1067821222040071

Yu. V. Gamin, S. P. Galkin, X. D. Nguyen, T. K. Akopyan

{"title":"Analysis of Temperature-Deformation Conditions for Rolling Aluminum Alloy Al–Mg–Sc Based on FEM Modeling","authors":"Yu. V. Gamin, S. P. Galkin, X. D. Nguyen, T. K. Akopyan","doi":"10.3103/S1067821222040071","DOIUrl":"10.3103/S1067821222040071","url":null,"abstract":"The article discusses the features of radial shear rolling (RSR) of the aluminum alloy Al–Mg–Sc. The modeling of the RSR process by the finite element method in the QForm 3D program with variation of the elongation ratio per pass and the rolling speed has been implemented. On the basis of the results obtained, a study of the temperature field of the rod in the deformation zone has been carried out taking into account the cyclic deformation and the configuration of the flow trajectories. It is found that changes in the temperature field of the rod in the deformation zone are determined by the difference in the trajectory flow of the metal in the surface layers and in the axial zone. When the elongation ratio is varied from 1.6 to 2.4, heating occurs inconsistently from the center to the surface. The largest increase occurs for an area that is approximately 0.3R from the surface. For the axial zone, the temperature change in the deformation zone occurs smoothly and with an insignificant temperature difference of 5–10°C. The temperature on the surface of the rod has the greatest temperature fluctuations, which are explained by deformation heating and simultaneous contact with a cold roll during each deformation cycle. With a decrease in the rolling speed, a picture of the distribution of the temperature field of the rod in the deformation zone is observed, when the temperature of the central layers exceeds the surface temperature. Because of the long contact time of the rod with the roll, the surface temperature fluctuates up to 40–50°C with each deformation cycle. With an increase in the rolling speed, the amplitude of temperature fluctuations on the surface decreases, and the deformation heating increases. The obtained data on the relationship of controlled technological parameters with a change in the temperature field of the rod can be useful in the design of technological modes of rolling.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"63 4","pages":"417 - 425"},"PeriodicalIF":0.8,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4642145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Extraction of Zirconium from Its Oxide during Electrolysis of the KF–AlF3–Al2O3–ZrO2 Melts KF-AlF3-Al2O3-ZrO2熔体电解过程中氧化锆的萃取

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S106782122204006X

A. A. Filatov, A. Yu. Nikolaev, A. V. Suzdaltsev, Yu. P. Zaikov

{"title":"Extraction of Zirconium from Its Oxide during Electrolysis of the KF–AlF3–Al2O3–ZrO2 Melts","authors":"A. A. Filatov, A. Yu. Nikolaev, A. V. Suzdaltsev, Yu. P. Zaikov","doi":"10.3103/S106782122204006X","DOIUrl":"10.3103/S106782122204006X","url":null,"abstract":"Zirconium is one of the widely demanded materials, while the existing methods of its production are multistage and energy-intensive. The paper proposes a method for extracting zirconium from its oxide by electrolysis of low-temperature oxide-fluoride melt KF–AlF3–Al2O3–ZrO2 with a temperature of 750°C. For this purpose, the potentials for the electroreduction of zirconium and aluminum ions on a glassy carbon electrode have been determined by means of voltammetric methods. It was shown that the electroreduction of aluminum ions in the KF–AlF3–Al2O3 melt occurs at a potential more negative than –0.05 V relative to the aluminum electrode with the formation of a cathode peak in the potential range from –0.18 to –0.2 V. With the addition of 1 wt % of ZrO2, cathode current on the voltammogram begins at a potential more negative than 0 V, and the cathode peak is formed at a potential of about –0.1 V. Similar results were observed in the study of the cathode process in the KF–AlF3–Al2O3 melt with and without the addition of ZrO2 by means of square-wave voltammetry. It has been suggested that, because of the lower bond energy, zirconium-containing electroactive ions are discharged at a potential that is 0.05–0.08 V more positive than the discharge potential of aluminum-containing ions. At a graphite cathode potential of –0.1 and –0.3 V relative to the aluminum electrode, the electrolysis of the KF–AlF3–Al2O3–ZrO2 melt was carried out, and the elemental and phase composition of the obtained deposits was determined by X-ray phase analysis, scanning electron microscopy, and energy dispersive microanalysis. It was shown that, at a potential of –0.1 V, a deposit with 98.5–99.5 wt % zirconium can be obtained. This indicates a reliable possibility of selective extraction of zirconium by the proposed method.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"63 4","pages":"379 - 384"},"PeriodicalIF":0.8,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4322317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production of Filler Rod for Repair Welding of ZK51 (ML12) Magnesium Alloy Castings ZK51 (ML12)镁合金铸件补焊焊条的生产

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S1067821222040101

A. V. Koltygin, V. E. Bazhenov, S. A. Tavolzhanskii, S. V. Matveev, I. V. Plisetskaya, M. V. Belov, A. V. Samokhin, V. D. Belov

{"title":"Production of Filler Rod for Repair Welding of ZK51 (ML12) Magnesium Alloy Castings","authors":"A. V. Koltygin, V. E. Bazhenov, S. A. Tavolzhanskii, S. V. Matveev, I. V. Plisetskaya, M. V. Belov, A. V. Samokhin, V. D. Belov","doi":"10.3103/S1067821222040101","DOIUrl":"10.3103/S1067821222040101","url":null,"abstract":"In magnesium alloys castings, the casting defects such as shrinkage porosity often occur. Such defects can be suppressed by repair welding or surfacing using a special filler rod. Unfortunately, in Russia, a low amount of filler rod is consumed. Therefore, domestic enterprises do not manufacture it, limiting themselves to imports or homemade low-quality substitutes. Nevertheless, there is a need for filler rod, and recently it has become unprofitable to replace them with imported materials owing to a significantly increased price. Therefore, there is a need to study the technology of its production to replace imported filler rod with domestic material. Magnesium alloys based on the Mg–Zn–Zr (La, Nd) system SV1, SV122, and ZK51 (ML12) that used as a filler rod for repair welding of ZK51 alloy castings were studied in this work. The samples were obtained by permanent mold casting into aluminum molds followed by hot extrusion into a filler rod with a diameter of 4 mm. It was shown that all the investigated alloys could be obtained in the form of a rod with a diameter of 4 mm. Therefore, the investigated rod samples from the SV122 alloy were used as filler material for repair welding of ZK51 magnesium alloy castings. The weld seam in the T1 condition has an ultimate tensile strength (UTS) about 80% of the UTS of the casting material.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"63 4","pages":"409 - 416"},"PeriodicalIF":0.8,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4322598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Mn2AlB2 Material via Thermal Explosion 热爆炸法制备Mn2AlB2材料

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-09-07 DOI: 10.3103/S1067821222040022

Baoyan Liang, Dandan Zhu, Qi Zhang, Xiaochen Feng, Yanli Zhang, Wangxi Zhang, Jizhou Zhang, Li Yang

{"title":"Preparation of Mn2AlB2 Material via Thermal Explosion","authors":"Baoyan Liang, Dandan Zhu, Qi Zhang, Xiaochen Feng, Yanli Zhang, Wangxi Zhang, Jizhou Zhang, Li Yang","doi":"10.3103/S1067821222040022","DOIUrl":"10.3103/S1067821222040022","url":null,"abstract":"Mn/Al/B mixed powders were used as raw material for the thermal explosion reaction in a tubular furnace to rapidly prepare Mn2AlB2 ceramics with high content at low temperature. The effects of raw material ratio, raw material particle size, and NaCl additives on the synthesis of Mn2AlB2 were studied systematically. The formation mechanism of Mn2AlB2 was proposed. The thermal explosion reaction was induced when the preheating temperature was approximately 686.9°C. The materials with MnB, Al, and Mn2AlB2 were synthesized as main phases. Mn2B and AlMnx were obtained in small amounts. Increasing the content of Al or refining the Mn and B size in the raw material reduced the content of MnB and other impurities in the product significantly, thereby promoting the synthesis of Mn2AlB2. The thermal explosion products were porous, and the sintering degree was weak. Many lathed Mn2AlB2 grains with an approximate size of 4 μm were obtained. A mechanism for the thermal explosion synthesis of Mn2AlB2 was proposed.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"63 4","pages":"448 - 455"},"PeriodicalIF":0.8,"publicationDate":"2022-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4325071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Efim Pavlovich Slavsky. Vladikavkaz stage of the biography

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-08-19 DOI: 10.17073/0021-3438-2022-4-84-89

S. Chedzhemov

引用次数: 0

Effect of reduction ratio during cold rolling and final annealing temperature on the properties and microstructure of Al–Mg–Sc alloy sheets 冷轧压下率和最终退火温度对Al-Mg-Sc合金板材性能和组织的影响

IF 0.8 4区材料科学

Russian Journal of Non-Ferrous Metals Pub Date : 2022-08-19 DOI: 10.17073/0021-3438-2022-4-75-83

F. Grechnikov, Y. Erisov, S. Surudin, V. Razzhivin

{"title":"Effect of reduction ratio during cold rolling and final annealing temperature on the properties and microstructure of Al–Mg–Sc alloy sheets","authors":"F. Grechnikov, Y. Erisov, S. Surudin, V. Razzhivin","doi":"10.17073/0021-3438-2022-4-75-83","DOIUrl":"https://doi.org/10.17073/0021-3438-2022-4-75-83","url":null,"abstract":"The study covers the effect of the reduction ratio during cold rolling (εh) and the final annealing temperature of sheets rolled with different reduction ratios on the microstructure and the complex of mechanical and processing properties of cold-rolled sheets made of the V-1579 aluminum alloy of the Al–Mg–Sc system. It was established that as εh increases, the nature of plastic anisotropy changes slightly, and an increase in tensile strength and yield strength with a decrease in relative elongation is observed. In this case, the ultimate strength and yield strength anisotropy is practically absent. As the reduction ratio increases to 30–40 %, the relative elongation anisotropy increases, and its value in the rolling direction decreases more rapidly. However, after rolling with εh > 50 %, the relative elongation anisotropy practically disappears. Regardless of the annealing temperature, samples rolled with a higher reduction ratio have better strength properties. It was found that as the annealing temperature increases, the ultimate strength and yield strength decrease, and the relative elongation increases. In this case, softening with an increase in the annealing temperature occurs more intensively for samples rolled with a lower reduction. After annealing, the distribution nature of anisotropy indices in the sheet plane does not decrease and corresponds to the deformation type of textures for all analyzed modes. Moreover, the value of the in-plane anisotropy coefficient decreases in comparison with a cold-rolled sample. At the same time, processing properties of samples rolled with a higher degree of deformation after annealing are higher than those of samples rolled with a lower reduction, regardless of the annealing temperature.","PeriodicalId":765,"journal":{"name":"Russian Journal of Non-Ferrous Metals","volume":"13 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74025367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0