Russian Metallurgy (Metally)最新文献_第2页

Influence of the Preliminary Heating Temperature of a Charge on the Structure and Mechanical Properties of a Porous TiNi Alloy Fabricated by Self-Propagating High-Temperature Synthesis 电荷预加热温度对自蔓延高温合成多孔TiNi合金结构和力学性能的影响

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700965

G. A. Baigonakova, A. S. Garin, E. S. Marchenko

{"title":"Influence of the Preliminary Heating Temperature of a Charge on the Structure and Mechanical Properties of a Porous TiNi Alloy Fabricated by Self-Propagating High-Temperature Synthesis","authors":"G. A. Baigonakova, A. S. Garin, E. S. Marchenko","doi":"10.1134/S0036029526700965","DOIUrl":"10.1134/S0036029526700965","url":null,"abstract":"Abstract—The parameters of the porous structure (pore size, interpore wall thickness) and the compressive mechanical properties of titanium nickelide fabricated by self-propagating high-temperature synthesis with preliminary heating of a powder charge to Th = 395–515°C (synthesis initiation temperature) are investigated. When Th increases in the chosen interval, the porosity of the alloy decreases from ≈63 to ≈58%, the average pore size decreases from 43.2 to 5.9 μm with a subsequent increase to 27.1 μm at Th = 515°C, and the average interpore wall thickness changes from 78.1 to 28.4 μm with a subsequent increase to 58.7 μm. At Th = 495°C, the alloy is characterized by an effective elastic modulus E = 2.43 ± 0.20 GPa, an ultimate compressive strength (sigma _{{text{u}}}^{{text{c}}}) ≈ 114 MPa, and a relative strain to failure εmax ≈ 14.6%. At Th = 515°C, the effective elastic modulus decreases to E = 2.33 ± 0.36 GPa, and the ultimate compressive strength increases to (sigma _{{text{u}}}^{{text{c}}}) ≈ 128 MPa at a retained plasticity (εmax ≈ 14.0%).","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 5","pages":"803 - 813"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098393","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}

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A Study of the Microstructure and Chemical Inhomogeneities in CMSX-10 Polycrystalline Ingots Aimed at Optimizing the Solidification Process 基于凝固工艺优化的CMSX-10多晶铸锭组织与化学不均匀性研究

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526600100

Amir Talebi, Masumeh Seifollahi, Seyed Mahdi Abbasi

{"title":"A Study of the Microstructure and Chemical Inhomogeneities in CMSX-10 Polycrystalline Ingots Aimed at Optimizing the Solidification Process","authors":"Amir Talebi, Masumeh Seifollahi, Seyed Mahdi Abbasi","doi":"10.1134/S0036029526600100","DOIUrl":"10.1134/S0036029526600100","url":null,"abstract":"This study investigated the effects of different melting processes—VIM, VIM+VIM, and VIM + VIM + VAR—on the microstructure, chemical inhomogeneities, elemental segregation, and inclusion distribution in the polycrystalline nickel-based superalloy CMSX-10. Microstructural analysis via OM and SEM revealed that the VIM + VIM + VAR sample exhibited a more developed dendritic structure than the VIM + VIM sample, with both showing greater dendritic advancement than the single VIM-melted sample. This progression correlated with increased dendrite volume, secondary dendrite formation, and reduced eutectic structure size. Elemental segregation analysis identified Ta and Al as positively segregating elements. Their segregation intensified with additional melting steps: segregation coefficients for Ta and Al increased from 0.35 and 0.44 (single VIM) to 0.71 and 0.58 (double VIM), and further to 0.77 and 0.87 (triple VIM + VAR). Conversely, segregation of Co, W, Re, Mo, and Cr decreased in the multi-step processes. The most significant reductions were observed for W, Mo, and Re. For instance, Re’s segregation coefficient dropped sharply from 4.17 (single VIM) to 2.56 (double VIM) and 1.69 (VIM + VIM + VAR). In conclusion, the VIM and VAR remelting steps prior to Bridgman solidification are crucial for refining and homogenizing the dendritic structure. Producing an initial ingot with fine, uniform dendrites allows for better control of the solidification rate in the Bridgman furnace, reduces the likelihood of interdendritic cracking, and facilitates the successful formation of a single-crystal structure.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 6","pages":"931 - 945"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098552","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}

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High-Temperature Impact Toughness of Cast Die Steel with Controlled Austenite Transformation during Operation 控制奥氏体相变铸模钢高温冲击韧性的研究

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526701041

A. A. Kruglyakov, S. O. Rogachev, D. V. Ten, V. E. Bazhenov, N. V. Lebedeva

引用次数: 0

New Equivalent Stresses and Their Comparison 新的等效应力及其比较

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700862

V. V. Nazarov

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Prediction of Earing Using Texture Parameters for Grade 8011 Sheet Aluminum Alloy 用织构参数预测8011级薄板铝合金的磨损

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526701089

V. N. Serebryanyi, A. S. Kolyanova

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Residual Stress Formation in Al–Cu–Li Alloys Al-Cu-Li合金残余应力的形成

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526701090

S. Ya. Betsofen, A. A. Ashmarin, A. V. Shalin, Yu. S. Oglodkova, D. A. Prokopenko, E. I. Maksimenko, E. M. Rybakov

{"title":"Residual Stress Formation in Al–Cu–Li Alloys","authors":"S. Ya. Betsofen, A. A. Ashmarin, A. V. Shalin, Yu. S. Oglodkova, D. A. Prokopenko, E. I. Maksimenko, E. M. Rybakov","doi":"10.1134/S0036029526701090","DOIUrl":"10.1134/S0036029526701090","url":null,"abstract":"Abstract—The texture and lattice parameters of Al–Cu–Li alloy sheets in various sections and at various distances from the surface are determined by X-ray diffraction. The lattice strain and residual stresses in the direction normal to each section are determined from the difference between the lattice parameters for each section and their average value. For all alloys, compressive stresses are found in the direction normal to the sheet plane. Their magnitude is minimal (less than 5 MPa) for 1441 and V-1461 alloys with a T1 (Al2CuLi) phase content less than 2.2 wt % and reaches –29 MPa for V-1469, V-1480, and V-1481 alloys with a T1-phase content of 4.3–6.2 wt %. These differences are interpreted using experimental data on the texture of the solid solution and the T1 phase and taking into account the shape of the phase precipitates, which cause a predominant increase in the volume and compressive stresses in the direction normal to the sheet. Similar studies for bulk alloy 1441 ingots with a cross section of 300 × 1100 mm show the absence of texture and the presence of residual stresses up to –20 MPa, the magnitude and sign of which are random.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 5","pages":"913 - 921"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098902","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}

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Effect of Various Severe Plastic Deformation Methods on the Microstructure and Mechanical Properties of a Hypoeutectic Al–Ca–Fe Alloy 不同强塑性变形方法对亚共晶Al-Ca-Fe合金组织和力学性能的影响

IF 0.3

Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700989

S. O. Rogachev, E. A. Borozdina, E. A. Naumova, V. A. Andreev, V. S. Komarov, R. D. Karelin, N. Yu. Tabachkova, V. E. Bazhenov

{"title":"Effect of Various Severe Plastic Deformation Methods on the Microstructure and Mechanical Properties of a Hypoeutectic Al–Ca–Fe Alloy","authors":"S. O. Rogachev, E. A. Borozdina, E. A. Naumova, V. A. Andreev, V. S. Komarov, R. D. Karelin, N. Yu. Tabachkova, V. E. Bazhenov","doi":"10.1134/S0036029526700989","DOIUrl":"10.1134/S0036029526700989","url":null,"abstract":"Abstract—A comparative analysis of the effects of equal-channel angular pressing (ECAP) and high-pressure torsion (HPT) on the strength, plasticity, and their relationship is performed for the hypoeutectic aluminum Al–3 wt % Ca–1 wt % Fe alloy. The ECAP is performed at 200°C using four passes and the HPT is carried out at room temperature using three revolutions. The used HPT conditions are found to result in the formation of the finest microstructure, which ensures the best combination of the strength and plasticity of the alloy, namely, the average values of the offset yield stress, ultimate strength, and relative elongation to failure are 341, 465 MPa, and 15%, respectively. These values are 4.4, 2.9, and 1.5 times higher than those of the alloy in the cast state. The structure of the alloy subjected to ECAP is less refined, inhomogeneous, dominated by low-angle boundaries and characterized by presence of relatively coarse particles of fragmented eutectic. As a result, the average values of strength and elongation to failure of the alloy subjected to ECAP are 1.6 to 2.0 times and 1.5 times lower than the corresponding properties of the alloy subjected to HPT, respectively. The microstructural mechanisms determining the combination of high strength and plasticity of the alloy are discussed.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 5","pages":"826 - 833"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098548","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}

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Strength Characteristics of Hot-Pressed Materials Based on Bi0.5Sb1.5Te3 Solid Solution with Various Dispersers 不同分散剂Bi0.5Sb1.5Te3固溶体热压材料的强度特性

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700916

L. D. Ivanova, I. Yu. Nihezina, M. A. Kaplan, S. V. Shevtsov, A. S. Lysenkov

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Interaction between Tungsten and Molten Nickel 钨与熔镍之间的相互作用

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700886

V. G. Sursaeva, V. M. Kiiko

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Low-Temperature Mechanical Properties of Rolled Low-Carbon Steel Plates 轧制低碳钢板的低温力学性能

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S003602952670103X

S. A. Nikulin, S. O. Rogachev, V. A. Belov, D. V. Ten, V. Yu. Turilina, A. V. Molyarov

引用次数: 0