Metallurgist最新文献_第10页

Structure and mechanical properties of Ti(Al1–xFex)3 alloys obtained by arc melting and directed energy deposition 电弧熔炼和定向能沉积制备Ti(Al1-xFex)3合金的组织和力学性能

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-01-12 DOI: 10.1007/s11015-025-02067-3

N. S. Aleksandrova, O. N. Dubinin, Y. O. Kuzminova, S. A. Evlashin, P. A. Riabinkina, D. V. Lazurenko

{"title":"Structure and mechanical properties of Ti(Al1–xFex)3 alloys obtained by arc melting and directed energy deposition","authors":"N. S. Aleksandrova, O. N. Dubinin, Y. O. Kuzminova, S. A. Evlashin, P. A. Riabinkina, D. V. Lazurenko","doi":"10.1007/s11015-025-02067-3","DOIUrl":"10.1007/s11015-025-02067-3","url":null,"abstract":"<div><p>This study investigates the influence of the manufacturing process on the microstructure and properties of Ti(Al<sub>1–x</sub>Fe<sub>x</sub>)<sub>3</sub> intermetallic alloys. The samples were produced using two techniques: arc melting and directed energy deposition. The results indicate that, for alloys with 9 at % Fe, an L1<sub>2</sub> structure with secondary phase precipitates forms regardless of the manufacturing technique. This structure has a similar volume of secondary phases, but a different degree of dispersion. High cooling rates during the directed energy deposition process result in a significant refinement of the dendritic structure. The fine-grained microstructure of the additively manufactured Ti<sub>25</sub>Fe<sub>9</sub>Al<sub>66</sub> alloy results in hardness and fracture toughness that are 8.1% and 22.4% higher, respectively, than those of the cast Ti<sub>26</sub>Fe<sub>9</sub>Al<sub>65</sub> alloy. Similarly, the hardness of the directed-energy-deposited alloy with a high iron content (16 at %) is 2.1 times greater than that of its arc-melted counterpart. However, despite its refined microstructure, the high-iron composition exhibits the lowest fracture toughness (3.1 MPa·m<sup>1/2</sup>) of all the studied alloys, which is 2.3 times lower than the value of the cast material. This embrittlement is attributed to the precipitation of a large volume of brittle secondary phases identified as TiFeAl<sub>2</sub> and Fe<sub>4</sub>Al<sub>13</sub>.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 9","pages":"1418 - 1426"},"PeriodicalIF":0.9,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148458962","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

Microstructure and properties of nickel-based coatings deposited on 12Kh18N9T stainless steel 12Kh18N9T不锈钢表面镍基涂层的组织与性能

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-01-12 DOI: 10.1007/s11015-025-02059-3

P. M. Petukhova, E. G. Bushueva, A. I. Popelukh, R. R. Nurdinov, I. P. Mishin

{"title":"Microstructure and properties of nickel-based coatings deposited on 12Kh18N9T stainless steel","authors":"P. M. Petukhova, E. G. Bushueva, A. I. Popelukh, R. R. Nurdinov, I. P. Mishin","doi":"10.1007/s11015-025-02059-3","DOIUrl":"10.1007/s11015-025-02059-3","url":null,"abstract":"<div><p>This paper presents a study on the structure and properties of coatings formed on 12Kh18N9T structural steel surfaces. Nickel-based powder compositions were deposited using a commercial ELV‑8 electron accelerator in an air atmosphere. The primary objective of this study was to develop a high-quality surface layer that exhibits enhanced heat oxidation resistance (scaling resistance) and high-temperature strength (creep strength). Evaluation of the phase composition and distribution of alloying elements within the coating, as well as analysis of the structural characteristics of the deposited layer was performed. The results indicate that the coatings formed on the steel surface are 2000–2250 µm thick and have a dendritic microstructure. According to X‑ray diffraction analysis, the dendrites consist of a γ-solid solution of Fe, Ni, and Cr. The oxidation resistance of the deposited layer was found to be approximately 15.5 times greater than that of the base 12Kh18N9T steel. Additionally, tensile tests conducted at 850 °C revealed that the strength of the coating is double that of the substrate material.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 9","pages":"1348 - 1353"},"PeriodicalIF":0.9,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148458966","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

Determination of the optimal composition of iron ore materials for a liquid-phase reduction reactor 液相还原反应器中铁矿石原料最佳组成的测定

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-12-15 DOI: 10.1007/s11015-025-02046-8

K. V. Strogonov, D. D. Lvov, A. K. Bastynets, V. A. Murashov

{"title":"Determination of the optimal composition of iron ore materials for a liquid-phase reduction reactor","authors":"K. V. Strogonov, D. D. Lvov, A. K. Bastynets, V. A. Murashov","doi":"10.1007/s11015-025-02046-8","DOIUrl":"10.1007/s11015-025-02046-8","url":null,"abstract":"<div><p>This study presents the results of an investigation into liquid-phase iron reduction technology. The goal of this technology is to improve the energy efficiency and environmental sustainability of metallurgical production. The primary objective was to determine the optimal composition of iron ore materials and the key parameters of the reduction process in order to minimize energy consumption and harmful emissions. Our methodology incorporated experimental tests in a Tammann furnace, thermodynamic calculations using the IVTANTHERMO software package, and mathematical modeling of the reduction process. Our findings suggest that an iron concentration of 53% in the raw material achieves a reduction degree of up to 99%. The study determined that the CO<sub>2</sub> emissions associated with liquid-phase reduction are 0.95 tons per ton of product. This figure is 1.6 times lower than the emissions associated with sinter-coke blast furnace technology and 1.3 times lower than the emissions associated with the MIDREX process. This work defines the optimal parameters for the reduction process and demonstrates a substantial reduction in the carbon footprint achievable with the developed technology. The potential for industrial implementation of this technology underscores the practical significance of the research. This technology can be used to produce high-quality iron-containing materials. It has minimal resource consumption and atmospheric emissions.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 8","pages":"1262 - 1273"},"PeriodicalIF":0.8,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145982595","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

Process analysis in a crystallizer equipped with a dual-circuit evaporative-condensation cooling system 双回路蒸发冷凝冷却结晶器过程分析

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-12-15 DOI: 10.1007/s11015-025-02047-7

V. V. Stulov, A. V. Ivanov

引用次数: 0

Methods of increasing the geometric accuracy of welded seams of large-diameter straight-seam pipes 提高大直径直缝管焊缝几何精度的方法

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-12-15 DOI: 10.1007/s11015-025-02051-x

I. L. Permiakov

引用次数: 0

The micromechanical properties of the structural phases in non-fluxed indurated titanomagnetite pellets 非助熔剂硬化钛磁铁矿球团中结构相的微观力学性能

IF 0.9 4区材料科学

Metallurgist Pub Date : 2025-12-15 DOI: 10.1007/s11015-025-02056-6

Andrey N. Dmitriev, Valentina G. Smirnova, Galina Yu. Vitkina, Elena A. Vyaznikova, Svetlana A. Rogovaya

{"title":"The micromechanical properties of the structural phases in non-fluxed indurated titanomagnetite pellets","authors":"Andrey N. Dmitriev, Valentina G. Smirnova, Galina Yu. Vitkina, Elena A. Vyaznikova, Svetlana A. Rogovaya","doi":"10.1007/s11015-025-02056-6","DOIUrl":"10.1007/s11015-025-02056-6","url":null,"abstract":"<div><p>Compressive strength is one of the strength metrics of indurated pellets in macroscopic tests and is governed by crack initiation and growth, typically through the pellet core where tensile stresses are highest. We used instrumented indentation to study local deformation processes and quantify microhardness, reduced modulus of elasticity, plasticity index, and creep for titanomagnetite/magnetite and titanohematite/hematite phases in the cores of non-fluxed indurated titanomagnetite pellets. SEM/EDS revealed grains composed of titanomagnetite and titanohematite containing minor Al, Mg, and V; the magnetite and hematite phases also contain minor Al and Mg. XRD indicated that the smaller the interplanar spacing and the unit-cell volume, the higher the microhardness of these structural phases. It was shown that the plasticity index for titanomagnetite/magnetite exceed that for titanohematite/hematite, while titanohematite/hematite exhibits lower creep; together, these results point to a greater propensity of the latter to accumulate internal stresses leading to microcrack formation.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 9","pages":"1324 - 1331"},"PeriodicalIF":0.9,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148458784","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

Evaluation of the physical and mechanical properties in the surfacing zones of L53 and quenched-and-tempered 65G steels L53和调质65G钢堆焊区的物理力学性能评价

IF 0.9 4区材料科学

Metallurgist Pub Date : 2025-12-15 DOI: 10.1007/s11015-025-02055-7

Igor N. Kravchenko, Sergey A. Feskov, Aleksandr A. Gutsan, Nataliya E. Sakovich, Anton N. Belyakov

{"title":"Evaluation of the physical and mechanical properties in the surfacing zones of L53 and quenched-and-tempered 65G steels","authors":"Igor N. Kravchenko, Sergey A. Feskov, Aleksandr A. Gutsan, Nataliya E. Sakovich, Anton N. Belyakov","doi":"10.1007/s11015-025-02055-7","DOIUrl":"10.1007/s11015-025-02055-7","url":null,"abstract":"<div><p>This paper presents an experimental evaluation of the mechanical properties in the surfacing zones of hot-rolled L53 steel and quenched-and-tempered 65G steel. Hardness was measured across the surfacing bead, the near-weld zone (NWZ), the heat-affected zone (HAZ), and the base metal. The results show that thermal exposure during surfacing produces a pronounced heterogeneity of mechanical properties, most notably in the NWZ. For both steels, the hardness in the NWZ increases by up to 7 HRC relative to the initial value. In L53 steel, the HAZ segment (about 5.5 mm in length) that follows the NWZ exhibits only a minor hardness increase of up to 2 HRC, whereas the hardness in the corresponding HAZ segment (about 6.5 mm in length) of 65G steel decreases by up to 6.5 HRC relative to the initial value. The greatest scatter of hardness values is observed in the NWZ, where heat strongly affects the local mechanical properties. Overall, the hardness distributions in pre-hardened 65G steel are broadly similar to those in L53 steel, but with more pronounced changes in the HAZ. These findings should be taken into account when optimizing repair and hardfacing technologies for soil-engaging parts of tillage equipment.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 9","pages":"1317 - 1323"},"PeriodicalIF":0.9,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148458783","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

Study of factors influencing corrosion resistance of shipbuilding steels under marine conditions 船舶用钢在海洋条件下耐腐蚀性能的影响因素研究

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-12-01 DOI: 10.1007/s11015-025-02037-9

A. V. Amezhnov, I. G. Rodionova, N. A. Arutyunyan

引用次数: 0

Structural features of continuously cast 26KhGMFA steel billets and the effect of electromagnetic stirring on solidification 26KhGMFA连铸钢坯组织特征及电磁搅拌对凝固的影响

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-12-01 DOI: 10.1007/s11015-025-02036-w

Nikolay A. Zyuban, Dmitriy V. Rutskii, Mikhail V. Kirilichev, Vladislav V. Galagan, Mikhail S. Gordeev

引用次数: 0

Studying the quality of the welded joints of cold-resistant microalloyed heavy plate steel P460NL1 intended for mobile CO2 storage applications 研究移动CO2储存器用耐寒微合金厚钢板P460NL1的焊接接头质量