Russian Metallurgy (Metally)最新文献_第3页

Mechanism of Pearlite Fragmentation in Hypereutectoid Rail Steel during Long-Term Service 过共析钢轨钢长期使用中珠光体碎裂机理

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700898

Yu. F. Ivanov, S. A. Nevskii, V. E. Gromov, M. A. Porfir’ev, D. D. Mikhailov

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Equivalent Stress for Describing the Long-Term Strength under Equal Biaxial Tension 描述等双轴拉伸下长期强度的等效应力

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700874

V. V. Nazarov

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Comparative Study of Irradiation-Induced Hardening and Thermal Recovery Behavior in P91 and P92 Steels under Proton Irradiation 质子辐照下P91和P92钢辐照致硬化和热恢复行为的比较研究

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526600343

H. M. Qadr

{"title":"Comparative Study of Irradiation-Induced Hardening and Thermal Recovery Behavior in P91 and P92 Steels under Proton Irradiation","authors":"H. M. Qadr","doi":"10.1134/S0036029526600343","DOIUrl":"10.1134/S0036029526600343","url":null,"abstract":"This study examined the hardness response of P91 and P92 ferritic/martensitic steels to proton irradiation conducted at room temperature, with the SRIM code employed to determine proton penetration depths and displacement per atom (dpa) values for each material. Prior to irradiation, P92 steel recorded higher baseline hardness than P91, a difference attributed to its tungsten content, which contributes to enhanced solid solution strengthening. Short-duration irradiation was performed at 1.9 MeV with an integrated fluence of 1.35 × 1017 ion cm–2, corresponding to a damage level of 0.043 dpa. Long-duration irradiation at the same energy reached a fluence of 1.101 × 1018 ion cm–2, approximately one order of magnitude higher, producing 0.18 dpa. Hardness increased in both steels under both irradiation conditions, with greater fluence producing greater hardening. Measurements at 0.2 kg indenter load were more representative of the peak irradiation damage zone than those at 1.0 kg, as confirmed by SRIM penetration depth analysis. Following long-duration irradiation, specimens were annealed at 700°C for one hour under vacuum. A single annealing cycle fully restored P91 hardness to its pre-irradiation baseline through thermally activated defect recombination, whereas P92 required two successive cycles to approach equivalent recovery. Despite nearly identical chemical compositions, irradiated P92 demonstrated considerably greater resistance to thermal recovery than P91, a behavior linked to its tungsten-stabilized microstructure.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 6","pages":"1021 - 1030"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098551","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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Laws of Noncontact Deformation Zone Formation during Line-by-Line Surface Plastic Deformation 逐行表面塑性变形过程中非接触变形区形成规律

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700850

S. A. Zaides, V. P. Kol’tsov, T. C. Le

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Effect of the Quenching Temperature on the Mechanical and Thermal Stability of the Structure of VT16 Alloy 淬火温度对VT16合金组织力学和热稳定性的影响

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526701004

M. Yu. Kollerov, D. E. Gusev, M. B. Afonina, O. S. Alsaeva

{"title":"Effect of the Quenching Temperature on the Mechanical and Thermal Stability of the Structure of VT16 Alloy","authors":"M. Yu. Kollerov, D. E. Gusev, M. B. Afonina, O. S. Alsaeva","doi":"10.1134/S0036029526701004","DOIUrl":"10.1134/S0036029526701004","url":null,"abstract":"Abstract—The mechanical and thermal stability of the β- and α\"-phases of a quenched α + β VT16 titanium alloy (Ti–Al–Mo–V system) has been investigated. The β-phase present in the structure of the alloy quenched from temperatures of 740–800°C is found to be mechanically unstable and transforms into α\" martensite during deformation. After quenching from 770°C, the α\"-phase undergoes the reverse martensitic transformation into the β phase at temperatures of 86–165°C upon subsequent heating (at a rate of 10–15°C/min); this phase then undergoes the β → ω- and β → α transformations. After quenching from 800°C, the reverse martensitic transformation occurs in the temperature range 306–340°C and is then replaced by the β → ω transformation followed by diffusional decomposition into the α- and β-phases. In the alloy quenched from 830°C or above, diffusional decomposition of α\" martensite occurs with the formation of an α + β structure upon subsequent heating above 400°C. The quenching temperature is shown to affect the hardness, yield strength, and elastic modulus of the alloy. The lowest values of these properties are observed after quenching from 770°C, which is due to the mechanical instability of the β phase.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 5","pages":"844 - 851"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098394","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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The Role of Dispersing a Granulate of Tetrafluoroethylene–Perfluorovinylpropyl Ether Copolymer during Extrusion Compounding with Polyetheretherketone in Forming the Mechanical and Tribological Properties of Composites Based on Them 四氟乙烯-全氟乙烯-丙基醚共聚物在与聚醚醚酮挤压复合过程中分散颗粒对复合材料力学和摩擦学性能的影响

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S003602952670093X

D. A. Tambovskaya, E. A. Kurakov, K. N. Shirin, E. M. Berezina, E. O. Koval’, V. V. Botvin, D. G. Buslovich, S. V. Panin

{"title":"The Role of Dispersing a Granulate of Tetrafluoroethylene–Perfluorovinylpropyl Ether Copolymer during Extrusion Compounding with Polyetheretherketone in Forming the Mechanical and Tribological Properties of Composites Based on Them","authors":"D. A. Tambovskaya, E. A. Kurakov, K. N. Shirin, E. M. Berezina, E. O. Koval’, V. V. Botvin, D. G. Buslovich, S. V. Panin","doi":"10.1134/S003602952670093X","DOIUrl":"10.1134/S003602952670093X","url":null,"abstract":"Abstract—Composites based on polyetheretherketone (PEEK) modified with a copolymer of tetrafluoroethylene and perfluorovinylpropyl ether (PFA) in amounts of 5–15 wt % were prepared by extrusion compounding. The starting components differed in granulometric composition: PEEK—powder with a particle size of 50 μm , PFA— granules 1–5 mm in size. The influence of PFA content on morphology, crystalline structure, thermal, mechanical and tribological properties of the composites was studied. It was established that during compounding, due to the difference in melting temperatures of the matrix and the filler, the PFA is dispersed into microparticles of 1–3 μm, resulting in a phase-separated PEEK/PFA composite with a uniform distribution of spherical modifier inclusions. It was shown that adding 5–10 wt % PFA reduces the degree of crystallinity of PEEK from 19.3 to 12.4–14.0% without changing the melting temperature. At the same time, the relative elongation at break increases by more than 1.5 times and the Izod impact strength of notched specimens increases by 1.7–1.9 times. The best combination of mechanical and tribological characteristics is achieved at 10 wt % PFA, at which the coefficient of friction and the wear intensity are reduced threefold compared with unfilled PEEK: to 0.06 and 1.6 × 10–6 mm3/N m, respectively.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 5","pages":"780 - 789"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098395","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

Toughening Mechanism and Service Life Evaluation of WC–Co Conical Picks Modified by In-Situ PCD Using High-Pressure High-Temperature 高压高温原位PCD改性WC-Co锥镐的增韧机理及使用寿命评价

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526600379

Li Xiaojing, Yang Qingyuan, Yu Dongman

{"title":"Toughening Mechanism and Service Life Evaluation of WC–Co Conical Picks Modified by In-Situ PCD Using High-Pressure High-Temperature","authors":"Li Xiaojing, Yang Qingyuan, Yu Dongman","doi":"10.1134/S0036029526600379","DOIUrl":"10.1134/S0036029526600379","url":null,"abstract":"Conical picks are the core cutting components of engineering equipment, and their service performance directly determines mining efficiency and operational costs. To address the problem of severe wear and early failure of WC–Co alloy picks under hard rock conditions, WC–6Co alloy was used as the raw material to prepare the pick head matrix, and a polycrystalline diamond (PCD) composite modified layer was fabricated in situ on the pick tip via high‑pressure high‑temperature (HPHT) technology. The powder metallurgy process for the matrix and HPHT sintering parameters of the PCD layer were optimized systematically. The microstructure and phase composition were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), and the mechanical properties and wear‑resistant life of the picks before and after modification were compared and analyzed. The results show that the optimized process can produce a WC–6Co matrix with high density and uniform microstructure. Under the conditions of 5.0–6.0 GPa, 1350°C, and holding for 15 min, a continuous, dense, and well‑bonded PCD layer was obtained. After modification, the microhardness of the pick tip increased significantly to 6200 HV, and the wear rate was reduced by approximately two orders of magnitude (approx. 99%), realizing the synergistic matching of high wear resistance at the tip and high toughness of the matrix. Life tests show that the modified picks outperform traditional picks under all working conditions, the average service life reaches 2.1 times that of conventional picks, and the maximum value is up to 3.0 times under extreme hard rock conditions. The results provide technical support for the preparation and engineering application of high-performance, long‑service‑life conical picks under hard rock conditions.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 6","pages":"1008 - 1020"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098550","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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Mechanical Behavior of Bend-Strained Carbon-Filled Plastic and Carbon-Filled Plastic–Titanium Nickelide Hybrid Composite 弯曲应变碳填充塑料和碳填充塑料-镍钛杂化复合材料的力学行为

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700904

D. E. Gusev, D. V. Burdin, A. A. Sharonov, A. A. Smirnov

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Influence of the Type of State of Stress on the Phase-Structural Deformation of Shape Memory Alloys 应力状态类型对形状记忆合金相组织变形的影响

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526700837

A. A. Movchan, N. V. Gaganova

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Influence of the Hot Rolling Temperature on the Structure and Mechanical Properties of Cryogenic X7Ni9 (0H9) Steel 热轧温度对低温X7Ni9 （0H9）钢组织和力学性能的影响

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Russian Metallurgy (Metally) Pub Date : 2026-10-06 DOI: 10.1134/S0036029526701028

I. O. Bannykh, E. I. Lukin, V. M. Blinov, M. V. Antsyferova, O. A. Bannykh, E. V. Blinov, I. N. Lukina, D. V. Chernenok, M. A. Samoilova, G. E. Kurdyumov, N. L. Bolobanova

{"title":"Influence of the Hot Rolling Temperature on the Structure and Mechanical Properties of Cryogenic X7Ni9 (0H9) Steel","authors":"I. O. Bannykh, E. I. Lukin, V. M. Blinov, M. V. Antsyferova, O. A. Bannykh, E. V. Blinov, I. N. Lukina, D. V. Chernenok, M. A. Samoilova, G. E. Kurdyumov, N. L. Bolobanova","doi":"10.1134/S0036029526701028","DOIUrl":"10.1134/S0036029526701028","url":null,"abstract":"Abstract—The influence of the hot rolling temperature range (950–800, 1000–850, 1050–950, 1100–1000°C) on the microstructure and mechanical properties at 20 and –196°C of low-carbon cryogenic X7Ni9 (0H9) steel has been studied. After rolling at a reduction of 65% in the temperature range 950–800°C and air cooling, the steel exhibits the following properties: σu = 693 MPa, σ0.2 = 592 MPa, δ = 19.9%, ψ = 78.7%, KCU = 2.3 MJ/m2 at room temperature; σu = 1037 MPa, σ0.2 = 850 MPa, δ = 26.2%, ψ = 75.5%, and KCU = 0.13 MJ/m2 at cryogenic temperature. This combination of mechanical properties of the hot-rolled steel is caused by the formation of a fine-grained ferrite–bainite structure with a small amount of austenite (3–6%) and (Fe,Cr)3C-type carbides. No significant influence of the chosen hot rolling temperatures on the mechanical properties of the steel has been found.","PeriodicalId":769,"journal":{"name":"Russian Metallurgy (Metally)","volume":"2026 5","pages":"860 - 865"},"PeriodicalIF":0.3,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149098900","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