Russian Metallurgy (Metally)最新文献

Experimental and Statistical Optimization of Thinning Ratio in Deep Drawing of SUS 304 Stainless Steel sus304不锈钢拉深减薄比的实验与统计优化

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-03 DOI: 10.1134/S0036029525600464

Lai Dang Giang, Tran Duc Hoan

{"title":"Experimental and Statistical Optimization of Thinning Ratio in Deep Drawing of SUS 304 Stainless Steel","authors":"Lai Dang Giang,  Tran Duc Hoan","doi":"10.1134/S0036029525600464","DOIUrl":"10.1134/S0036029525600464","url":null,"abstract":"This study investigates the thinning behavior in the deep drawing of SUS 304 stainless steel cylindrical cups by combining controlled experiments with statistical analysis and metaheuristic optimization. A Box–Behnken Design (BBD) was employed to systematically evaluate the effects of die radius, blank holder force (BHF), and friction coefficient, the latter determined through tribological tests under three lubrication conditions. Wall thickness measurements at eight predefined positions along the cup profile revealed that the most severe thinning consistently occurred at the wall–bottom transition. A quadratic regression model was developed and validated by analysis of variance (ANOVA), demonstrating high statistical adequacy, with BHF identified as the dominant factor, followed by friction coefficient and die radius. Significant effects were also observed for the die radius–friction interaction and the nonlinear influence of BHF. Numerical optimization was then performed using the Particle Swarm Optimization (PSO) algorithm, which identified the optimum forming condition at a die radius of 6 mm, BHF of 41.1 kN, and a friction coefficient of 0.024, corresponding to a minimum thinning ratio of 5.42%. Experimental verification confirmed the prediction with a deviation of only 4.31%. The findings establish a statistically validated framework for minimizing thinning in stainless steel deep drawing and provide benchmark data for FEM calibration together with practical guidelines for die design and lubrication strategies in industrial applications.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2025 12","pages":"2106 - 2116"},"PeriodicalIF":0.3,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606547","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

Electrophoresis of Colloidal Silver Metal Solution 胶体银金属溶液的电泳

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-03 DOI: 10.1134/S0036029525600622

A. M. Amdur, S. A. Fedorov, A. M. Potapov, V. V. Pavlov, N. V. Pechishcheva, V. S. Kurmacheva

引用次数: 0

Magnetic Behaviour of Ba0.75 – xCaxLa0.30Fe12Co0.25Ti0.15O19 Competing Magnetic Nature in Compound by Using Facile Route Methodology 用简便路线法研究Ba0.75 - xCaxLa0.30Fe12Co0.25Ti0.15O19在化合物中的磁性竞争行为

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-03 DOI: 10.1134/S0036029525600269

Khurram Shehzad, Khalid Mehmood Ur Rehman, Matiullah Shah

{"title":"Magnetic Behaviour of Ba0.75 – xCaxLa0.30Fe12Co0.25Ti0.15O19 Competing Magnetic Nature in Compound by Using Facile Route Methodology","authors":"Khurram Shehzad, Khalid Mehmood Ur Rehman, Matiullah Shah","doi":"10.1134/S0036029525600269","DOIUrl":"10.1134/S0036029525600269","url":null,"abstract":"Magnetoplumbite-type (M-type) hexagonal barium ferrite samples were prepared by solid-state method. The effects of Ca–Ba ratio and calcination temperature on structural and magnetic properties were investigated through tests and from results it was found that the variation in ratio of Ca–Ba and temperature have an important effect on structure and magnetic properties of recently prepared samples of M-type hexaferrites. The XRD patterns confirmed the presence of single-phase up to x = 0.75. However, an undesired secondary phase appears in the form of α-Fe2O3 for compositions near the upper Ca substitutions. Although in Ba0.75 – xCaxLa0.30Fe12Co0.25Ti0.15O19, the theoretical substitution limit for Ca is x = 0.75 but to examine the solubility limit and resulting phase instability, higher Ca content compositions were deliberately synthesized and included. Lattice constants (c and a) as well as the ratio c/a vary with the variation in Ca–Ba ratio content (x) and these variations were discussed. FE-SEM micrographs exhibit platelet-like morphology which is a characteristic of M-Type hexaferrites and consistent with the results determined by XRD. Variations in saturation magnetization (Ms), remanent magnetization (Mr) and coercivity (Hc) with calcination temperature were also discussed. It was observed that Ms and Mr initially decreased with increasing calcination temperature and then increased at higher temperatures, while coercivity showed a continuous increase with temperature.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2025 12","pages":"2133 - 2139"},"PeriodicalIF":0.3,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606747","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

Selective Extraction of Copper and Aluminum from Oxidized Copper Ores 从氧化铜矿石中选择性提取铜和铝

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-03 DOI: 10.1134/S0036029526600069

A. A. Heydarov, N. I. Abbasova, A. A. Guliyeva, Z. A. Jabbarova, G. I. Alyshanly

{"title":"Selective Extraction of Copper and Aluminum from Oxidized Copper Ores","authors":"A. A. Heydarov, N. I. Abbasova, A. A. Guliyeva, Z. A. Jabbarova, G. I. Alyshanly","doi":"10.1134/S0036029526600069","DOIUrl":"10.1134/S0036029526600069","url":null,"abstract":"Selective extraction of copper and aluminum from oxidized copper ores has been studied. It includes the following stages: (1) autoclave leaching of the starting material with 5% solution of (NH4)2SO4; (2) separation of the soluble copper complex [Cu(NH3)4]2+ from the aluminosilicate residue; (3) mixing the moistened residue with concentrated sulfuric acid; (4) sulfatizing roasting; (5) leaching of the sulfated mass with water. During autoclave leaching, copper passes into solution in the form of a complex compound [Cu(NH3)4]2+, separating from a number of elements (Fe, Ca, Mg, Al, Si). During sulfatization, aluminosilicate minerals (feldspar, kaolin, illite and goethite) decompose and pass into the corresponding sulfate compounds. In this case, unstable sulfates, mainly iron(III) sulfate, decompose to the corresponding oxide, and aluminum remains in the form of sulfate Al(SO4)3. As a result of leaching of the sulfated mass with water, iron and silicon oxides remain in the residue, and aluminum passes into solution. The change in the mineralogical composition of the initial and sulfated ore mass was studied using DTA/TG, X-ray diffraction, and SEM/EDS analysis.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2025 12","pages":"2117 - 2124"},"PeriodicalIF":0.3,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606548","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

Phase Transformation and Process Optimization for High-Temperature Calcification Dissolution of Gibbsitic Bauxite 铝土矿高温钙化溶解相变及工艺优化

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-03 DOI: 10.1134/S0036029525600336

Zhiguo Li, Wang Song, Tingan Zhang, Lv Guozhi, Xin He, Zhuangzhuang Yun

{"title":"Phase Transformation and Process Optimization for High-Temperature Calcification Dissolution of Gibbsitic Bauxite","authors":"Zhiguo Li, Wang Song, Tingan Zhang, Lv Guozhi, Xin He, Zhuangzhuang Yun","doi":"10.1134/S0036029525600336","DOIUrl":"10.1134/S0036029525600336","url":null,"abstract":"As the main method of alumina production in the world, Bayer process emits a large amount of high alkaline red mud, which poses a very serious threat to the ecological environment. In this study, the high-temperature calcification transformation method based on source blocking was used to treat the Guinea gibbsite from the perspective of mineral phase reconstruction. A new type of structural red mud with almost no alkali was obtained while achieving efficient dissolution of alumina at high temperature. Single-factor tests (180–280°C, C/S = 1.25–2.5, 60 min, 240 g L–1 Na2O) showed that temperature and CaO/SiO2 ratio jointly control extraction yield and Na2O content of the residue. Characterization revealed that rising temperature converts boehmite to well-crystallized hydrogarnet while suppressing sodium aluminosilicate. Al2O3 dissolution increases from ~76% at 180°C to ~88% at 260–280°C; excess CaO drops yield. Na2O in slag falls continuously with higher C/S, reaching 0.41 wt % at 280°C and C/S = 2.5. The optimum compromise among yield, energy and equipment pressure is 240°C, C/S = 2.0, 60 min, giving 85% Al2O3 extraction and <0.8 wt % Na2O in residue.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2025 12","pages":"2089 - 2097"},"PeriodicalIF":0.3,"publicationDate":"2026-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606546","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

Mechanical Characterization and Electrochemical Corrosion Behaviour of Yttrium-Stabilized Zirconia (YSZ) Dual Layer Thermal Barrier Coating on SS 304 for Aerospace Applications 航空航天用SS 304上钇稳定氧化锆（YSZ）双层热障涂层的力学特性和电化学腐蚀行为

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-03 DOI: 10.1134/S0036029525600609

Varsha Ganesan, P. P. Sharvesh, S. Robin Divahar, Ajith Raj Rajendran

引用次数: 0

Effect of the Cu Concentration on the Solidification of Al–Cu–10 at % Ni Alloys under Various Cooling Conditions 不同冷却条件下Cu浓度对Al-Cu-10 % Ni合金凝固的影响

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-02 DOI: 10.1134/S0036029525600592

L. V. Kamaeva, A. L. Altunyan, A. A. Suslov, E. N. Tsiok, V. V. Brazhkin

{"title":"Effect of the Cu Concentration on the Solidification of Al–Cu–10 at % Ni Alloys under Various Cooling Conditions","authors":"L. V. Kamaeva, A. L. Altunyan, A. A. Suslov, E. N. Tsiok, V. V. Brazhkin","doi":"10.1134/S0036029525600592","DOIUrl":"10.1134/S0036029525600592","url":null,"abstract":"The influence of solidification conditions (temperature, cooling rate, pressure) on the sequence of phase transformations and the structure that forms during the solidification of three Al–Cu–Ni alloys with 10 at % Ni and 17.5, 24, and 30 at % Cu is investigated. Under all the cooling conditions under study, the structure of the alloys is found to be two-level: it consists of massive primary dendrites based on Al–Ni intermetallics (first level) and eutectic structures with excess Al–Cu–based intermetallics (second level). The formation of such a structure is caused by the wide solidification temperature range of the alloys. A change in the cooling rate at atmospheric pressure is shown not to affect the sequence of phase formation, but it can be used to control the primary intermetallic crystal sizes. At the same time, a change in the solidification pressure shifts phase equilibria along temperature and concentration, which fundamentally changes the character of phase formation. In particular, an increase in the pressure affects the peritectic transformations L + Al3Ni2 ( leftrightarrow ) L + Al3Ni and L + β-AlNi ( leftrightarrow ) L + Al3Ni2 and expands the concentration range of the ternary τ-Al7Cu3Ni intermetallic compound and the homogeneity ranges of the AlNi and AlCu intermetallics.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2025 11","pages":"2074 - 2080"},"PeriodicalIF":0.3,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588429","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

Exploring AlNH2BH3, ScNH2BH3, and VNH2BH3: Computational Insights into Hydrogen Storage 探索AlNH2BH3， ScNH2BH3和VNH2BH3：氢存储的计算见解

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-02 DOI: 10.1134/S0036029525600531

Muhammad Imran, Abdul Jalil, Muhammad Ramzan, Syed Wilayat Husain, Saad Nauman, Maryam Habib, Muhammad Omar, Saad Saleem Khan, Stephan Larkin

引用次数: 0

Selection Method of Best Tool Steel Materials Using Multiple Multi-Criteria Decision Making Techniques 基于多准则决策的最佳工具钢材料选择方法

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-02 DOI: 10.1134/S0036029525600348

Chung-Hyok Ma, Won-Chol Yang

{"title":"Selection Method of Best Tool Steel Materials Using Multiple Multi-Criteria Decision Making Techniques","authors":"Chung-Hyok Ma,  Won-Chol Yang","doi":"10.1134/S0036029525600348","DOIUrl":"10.1134/S0036029525600348","url":null,"abstract":"Tool steel materials selection is a multi-criteria decision making (MCDM) problem. There are various available MCDM techniques applicable to tool steel materials selection. The methods may generate non-negligible differences in the rankings of alternative materials. However, it is unknown which MCDM is more suitable to the given material selection problem. As each MCDM has its own characteristics, it is better desirable to decide more reasonable comprehensive rankings by fully considering the rankings obtained from individual MCDMs. This paper proposes a best tool steel materials selection method combined with the ranking results obtained from multiple popular MCDMs. The method selects the best tool steel materials using comprehensive rank indices of alternative materials. The comprehensive rank indices are calculated based on rank frequency rates of the alternative materials. To verify its effectiveness, the proposed method is applied to select best tool steel materials among ten alternative materials in consideration of nine attributes. It could be widely used to help materials designers and engineers select the best material in many engineering practices.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2025 11","pages":"2081 - 2088"},"PeriodicalIF":0.3,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588430","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

Effect of Acetylene Black on the Electronic Conductivity of a Cathode Material Based on the Li1.3V3O8 Vanadium Bronze 乙炔黑对Li1.3V3O8钒青铜阴极材料电导率的影响

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-04-02 DOI: 10.1134/S0036029525600312

M. S. Shchelkanova

{"title":"Effect of Acetylene Black on the Electronic Conductivity of a Cathode Material Based on the Li1.3V3O8 Vanadium Bronze","authors":"M. S. Shchelkanova","doi":"10.1134/S0036029525600312","DOIUrl":"10.1134/S0036029525600312","url":null,"abstract":"The lithium–vanadium Li1 + xV3O8 bronze is being investigated as a promising cathode material for lithium and lithium-ion current sources with a liquid electrolyte. In the previous work, we synthesized the lithium–vanadium Li1.3V3O8 bronze from a melt of the initial components and achieved a grain size of about 5 μm in the synthesized material and a room-temperature electrical conductivity of ~10–3 S/cm, which is several orders of magnitude higher than the conductivity of commercial cathode materials. In this paper, we investigate the effect of a conductive acetylene black additive on the electrical resistance of cathodes with Li1.3V3O8 at room and elevated temperatures for liquid electrolyte power sources and for medium-temperature (up to 300°C) all-solid-state batteries. Isothermal holdings performed at various temperatures demonstrate that lithium–vanadium Li1.3V3O8 oxide powders and acetylene black do not interact with each other up to a temperature of 200°C and can be used to create a cathode for a medium-temperature current source. The introduction of a fine acetylene black conductive additive into Li1.3V3O8 is found to increase the electronic conductivity of the cathode mass (to 7.8 × 10–2 S/cm at 5 wt % C and 25°C) and to decrease the contact resistance at the electrode/metallic substrate interface.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2025 11","pages":"2066 - 2073"},"PeriodicalIF":0.3,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147588585","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