Metallurgist最新文献_第2页

Dominant mechanisms of melt decarburization in a circulation vacuum degasser leading to rational technological solutions for decreasing carbon content in steel below 0.002% 循环真空脱气器熔体脱碳的主要机理，为将钢的含碳量降低到0.002%以下提供了合理的技术解决方案

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-08-04 DOI: 10.1007/s11015-025-01963-y

A. A. Metelkin, O. Yu. Sheshukov, K. N. Pleshivtsev, A. V. Koryukov, D. A. Aleksandrovskaya

引用次数: 0

Dependence of the properties of multicomponent FeNiCrCoAlTiCuMoVZrNbW high-entropy coating on 35 steel on the parameters of electrospark deposition 35钢多组分FeNiCrCoAlTiCuMoVZrNbW高熵涂层性能与电火花沉积参数的关系

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-08-04 DOI: 10.1007/s11015-025-01969-6

A. A. Burkov, A. Yu. Bytsura, M. A. Kulik, V. O. Krutikova

{"title":"Dependence of the properties of multicomponent FeNiCrCoAlTiCuMoVZrNbW high-entropy coating on 35 steel on the parameters of electrospark deposition","authors":"A. A. Burkov, A. Yu. Bytsura, M. A. Kulik, V. O. Krutikova","doi":"10.1007/s11015-025-01969-6","DOIUrl":"10.1007/s11015-025-01969-6","url":null,"abstract":"<div><p>High-entropy alloys form a new class of metallic materials attracting the interest of researchers by a broad range of attractive properties and applications. The multicomponent FeNiCrCoAlTiCuMoVZrNbW coatings were obtained on 35 steel as a result of electric spark treatment in granules of the corresponding metals. We studied the structure and compositions of the coatings by X‑ray phase diffraction analysis and scanning electron microscopy supplemented by the energy-dispersive analysis. The thermodynamic calculations revealed high-entropy structures of the deposited coatings with BCC and FCC lattices confirmed by the results of phase diffraction analysis. As the duration of discharge pulses of electric spark deposition increases from 20 to 200 μsec, the thickness of the coating increases from 4.7 to 25.8 μm. The water wetting angles of the surfaces of applied high-entropy coatings vary from 102.4 to 106.6°, which means that the surface of 35 steel acquires hydrophobic properties. The heat resistance of the coated samples at a temperature of 700 °C was 3.7–4.9 times higher than for 35 steel. It was discovered that high-entropy coatings may significantly decrease the corrosion potential and corrosion current density of 35 steel in a 3.5% NaCl solution. The microhardness of the coatings varied within the range 5.11–5.31 GPa. As the duration of discharge pulses of spark deposition increases, the friction coefficient of the high-entropy coatings monotonically increases from 0.86 to 0.97. The application of multicomponent FeNiCrCoAITiCuMoVZrNbW high-entropy coatings enables us to attain a 2–4-fold lowering of the degree of wear of 35 steel.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 4","pages":"521 - 533"},"PeriodicalIF":0.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196149","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 deformed semi-finished products from Co–Cr–Mo alloy ingots obtained with varying crystallization rates 用不同结晶速率的Co-Cr-Mo合金锭生产变形半成品

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-08-04 DOI: 10.1007/s11015-025-01972-x

A. V. Skugorev, M. M. Karashaev, S. P. Galkin, Y. V. Gamin, T. Yu. Kin, N. A. Kuleshova

{"title":"Production of deformed semi-finished products from Co–Cr–Mo alloy ingots obtained with varying crystallization rates","authors":"A. V. Skugorev, M. M. Karashaev, S. P. Galkin, Y. V. Gamin, T. Yu. Kin, N. A. Kuleshova","doi":"10.1007/s11015-025-01972-x","DOIUrl":"10.1007/s11015-025-01972-x","url":null,"abstract":"<div><p>The work is dedicated to the study of the influence of ingot crystallization rates on the structure of formed semi-finished products obtained from Co–Cr–Mo alloy ingots. The study examines the production of ingots by vacuum induction melting with casting into molds made of different materials that provide different crystallization rates for the alloy. The homogenization annealing process and its effect on the structure of ingots with varying crystallization rates were studied. Based on differential thermal analysis, it was demonstrated that the dissolution and precipitation of excess phases in ingots with higher crystallization rates occur at higher temperatures compared to those with lower crystallization rates. The structure of the ingots after homogenization annealing and the forgings obtained from the homogenized ingots were studied using optical and electron microscopy methods. Results showed that in order to obtain deformed semi-finished products with a more uniform structure and a more homogeneous distribution of the σ‑phase, it is desirable to reduce the crystallization rate. The use of ingots obtained with a higher crystallization rate for the production of high quality semi-finished products requires a significant adjustment of the homogenizing annealing and forging regimes.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 4","pages":"552 - 562"},"PeriodicalIF":0.8,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196256","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

Effect of flange design on the performance of a blast furnace air tuyere with heat-insulating insert 法兰设计对带隔热衬板的高炉风口性能的影响

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01960-1

Evgeniy A. Volkov, Marina K. Mikhailova, Alexandr G. Radyuk, Mikhail M. Skripalenko, Vladimir V. Sukhanovskiy, Alexandr E. Titlyanov

引用次数: 0

Industrial trials for production of high-quality ferrochrome from substandard chrome ores 用不合格铬矿石生产高质量铬铁的工业试验

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01962-z

K. A. Kologriev, A. N. Seregin, A. I. Volkov, U. A. Kologrieva

引用次数: 0

Producing aluminum matrix composite reinforced with decorated multi-walled carbon nanotubes 制备装饰多壁碳纳米管增强铝基复合材料

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01959-8

A. D. Romanov, E. A. Romanova, A. A. Mironov, V. A. Kikeev, A. M. Obiedkov, Ilya V. Vilkov

引用次数: 0

Magnetic parameters of magnetite nanoparticles prepared by chemical-metallurgy method using surfactants 表面活性剂化学冶金法制备纳米磁铁矿的磁性参数

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01958-9

Tien Hiep Nguyen, Yury V. Konyukhov, Do Van Minh, Le Hong Quan, Dao Manh Duong

引用次数: 0

Reengineering of the ball mill drive at the Novotroitsk Plant of Chromium Compounds 新特罗伊茨克铬化合物厂球磨机传动的改造

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01976-7

A. V. Nefedov, R. E. Ishmukhametov, N. A. Chichenev, I. I. Basyrov, Y. O. Lyubchenko, E. E. Balakhnina

{"title":"Reengineering of the ball mill drive at the Novotroitsk Plant of Chromium Compounds","authors":"A. V. Nefedov, R. E. Ishmukhametov, N. A. Chichenev, I. I. Basyrov, Y. O. Lyubchenko, E. E. Balakhnina","doi":"10.1007/s11015-025-01976-7","DOIUrl":"10.1007/s11015-025-01976-7","url":null,"abstract":"<div><p>The Novotroitsk Plant of Chromium Compounds specializes in the processing of chromite and dolomite ores, which are delivered to the first workshop of the grinding department, where they are crushed and ground in a ball mill. Operational experience has shown that the failure of the ball mill installed in this workshop leads to unplanned downtime due to failure of drive components, which accounts for 11.3% of the nominal operating time of the workshop. In order to increase the reliability of the technological equipment, it is proposed to replace the existing electric drive, which includes an obsolete 4A series electric motor and a special reducer, with a modern R167DV280V4/BVG122 motor-reducer, which transmits the rotation to the mill drum through a gear coupling. The development of the new drive has simplified its design and reduced the labor intensity of maintenance and repair. This technical solution increases the operating time between repairs, thus reducing operating costs. Calculations show that the implementation of the project solutions will lead to a 0.02% reduction in the cost of processing 1 ton of ore, a 1.37% increase in production profitability, and a 1.29% increase in sales profit. The additional investment does not exceed 3.4 million rubles and will be recovered in less than 3 months.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 4","pages":"586 - 591"},"PeriodicalIF":0.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196147","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

Efficiency of the jet electrolytic-plasma polishing in processing L605-alloy stents 射流电解等离子体抛光加工l605合金支架的效率

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01970-z

M. V. Novoselov, A. I. Popov, A. E. Remsheva, Z. N. Rasulov, A. E. Moldakhmetova

引用次数: 0

Formation of aluminide coating structure on the CrNi50WMoTiAlNb alloy surface during liquid aluminizing 液体渗铝过程中CrNi50WMoTiAlNb合金表面形成的铝化物涂层组织

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01967-8

V. P. Kulevich, A. I. Bogdanov, V. G. Shmorgun, S. A. Kuznetsov

引用次数: 0