Metallurgist最新文献_第4页

Effect of heat-treatment parameters on the structure and properties of high-carbon, high-manganese steels: review 热处理参数对高碳、高锰钢组织和性能的影响

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-09-07 DOI: 10.1007/s11015-026-02116-5

S. H. Nguyen, S. G. Ivanov, M. A. Guryev, M. N. Zenin, X. Zhang

引用次数: 0

Cerium effect on the microstructure, phase composition, and mechanical properties of a deformable Al–6%Cu–2%Mn alloy 铈对Al-6%Cu-2%Mn变形合金组织、相组成和力学性能的影响

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-09-07 DOI: 10.1007/s11015-026-02120-9

N. A. Belov, K. A. Tsydenov, S. O. Cherkasov, A. N. Koshmin

{"title":"Cerium effect on the microstructure, phase composition, and mechanical properties of a deformable Al–6%Cu–2%Mn alloy","authors":"N. A. Belov, K. A. Tsydenov, S. O. Cherkasov, A. N. Koshmin","doi":"10.1007/s11015-026-02120-9","DOIUrl":"10.1007/s11015-026-02120-9","url":null,"abstract":"<div>This study investigated the effect of cerium additions up to 4 wt % on the microstructure and mechanical properties of an Al–6%Cu–2%Mn (wt %) alloy, using both as-cast ingots and rolled sheet as examples. Flat ingots of the experimental alloys, measuring 10 × 40 × 180 mm, were produced by casting into a graphite mold. They were subsequently hot-rolled at 450 °C to a final thickness of 2 mm. The results demonstrate that with cerium additions of up to 2%, a significant portion of the manganese (approximately 75% of the total content) enters the aluminum solid solution during casting. This enables the formation of Al20Cu2Mn dispersoids upon subsequent heating. The investigation also revealed a previously unidentified quaternary phase, whose composition can be approximated by the formula Al20Cu4CeMn2. The presence of this phase suggests that the Al–Cu–Mn–Ce phase diagram is much more complex than a projection based on constituent ternary systems would suggest. All the experimental ingots demonstrated good workability during hot rolling. This process also refined the microstructure by making the distribution of Ce-containing phases more uniform. The study shows that, upon heating to 400 °C, the reduction in hardness of the rolled sheet from the experimental alloys is relatively minor. This result suggests that these alloys have enhanced thermal stability compared to standard heat-treatable wrought aluminum alloys.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 12","pages":"1902 - 1912"},"PeriodicalIF":0.9,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176475","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

Structure and physicochemical properties of Cr–Ni–Si–Fe system alloys Cr-Ni-Si-Fe系合金的组织和理化性能

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-09-07 DOI: 10.1007/s11015-026-02119-2

D. S. Renev, O. V. Zayakin, I. N. Kel’, V. I. Zhuchkov

{"title":"Structure and physicochemical properties of Cr–Ni–Si–Fe system alloys","authors":"D. S. Renev, O. V. Zayakin, I. N. Kel’, V. I. Zhuchkov","doi":"10.1007/s11015-026-02119-2","DOIUrl":"10.1007/s11015-026-02119-2","url":null,"abstract":"<div>This study investigates the structure and physicochemical properties of multicomponent Cr–Ni–Si–Fe alloys, which are of significant scientific and practical interest in the modern metallurgical industry. The primary research objective was to determine how chemical composition influences key alloy characteristics, such as melting temperature and density. These properties determine the technological suitability of the alloy for steel processing. Correlations between the crystallization temperature ranges and the density of the alloys with their nickel, chromium, and silicon content were established. A particular focus was placed on the role of silicon, which, at elevated concentrations, promotes the formation of intermetallic phases. The results of microstructural analysis reveal a complex phase composition in the studied alloys, comprising metallic solid solutions based on iron alongside intermetallic compounds. These findings hold significant practical importance for designing novel ferroalloy compositions with tailored properties, thereby enabling their effective application in metallurgical processes.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 12","pages":"1895 - 1901"},"PeriodicalIF":0.9,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176474","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

Metal ions for enhanced bioleaching kinetics 金属离子增强生物浸出动力学

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-09-07 DOI: 10.1007/s11015-026-02130-7

V. E. Averyanova, S. O. Ocheretyana

{"title":"Metal ions for enhanced bioleaching kinetics","authors":"V. E. Averyanova, S. O. Ocheretyana","doi":"10.1007/s11015-026-02130-7","DOIUrl":"10.1007/s11015-026-02130-7","url":null,"abstract":"<div>The main disadvantage of bioleaching technology is slow kinetics compared to other high-intensity hydrometallurgical processes. Current research focuses on accelerating the electrochemical dissolution of minerals. Several factors influencing this process have been identified, including the presence of impurities in a solid crystalline structure, the formation of galvanic pairs between different minerals in the ore, and the presence of specific ions in the solution. When these ions come into contact with the solid surface, they alter its electrochemical properties. Consequently, introducing suitable catalytic components can significantly improve the reaction rate and metal recovery into solution. This review synthesizes existing research to provide a comprehensive overview of the field and establish a foundation for future work. The review catalogs metal ions that have the potential to catalyze the bioleaching of various ores and minerals, such as chalcopyrite, arsenopyrite, and complex sulfides, and it describes the roles and mechanisms of specific ions, including Ag+, Hg2+, Bi3+, and Cu2+. Additionally, the article examines how different metal ions impact the bioleaching of low-grade ores and identifies their most effective concentrations.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 12","pages":"2004 - 2016"},"PeriodicalIF":0.9,"publicationDate":"2026-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176473","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

Composition and structure of heat-resistant coatings based on nickel and iron aluminides 基于镍和铁铝化物的耐热涂层的组成和结构

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-09-07 DOI: 10.1007/s11015-026-02123-6

A. I. Bogdanov

引用次数: 0

Numerical simulation of gas dynamics and mass transfer in an oxygen-enrichment unit for blast furnace air 高炉空气富氧装置内气体动力学和传质的数值模拟

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-09-07 DOI: 10.1007/s11015-026-02129-0

D. A. Perederyi, P. G. Ludkovski, Y. Yu. Puzina

引用次数: 0

Increasing the reliability of fracture toughness assessment results for ductile materials with heterogeneous multiscale structures 提高非均质多尺度结构塑性材料断裂韧性评估结果的可靠性

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-05-20 DOI: 10.1007/s11015-026-02098-4

E. A. Sokolovskaya, A. V. Kudrya, M. I. Sergeyev, Ngo Ngok Kha

{"title":"Increasing the reliability of fracture toughness assessment results for ductile materials with heterogeneous multiscale structures","authors":"E. A. Sokolovskaya, A. V. Kudrya, M. I. Sergeyev, Ngo Ngok Kha","doi":"10.1007/s11015-026-02098-4","DOIUrl":"10.1007/s11015-026-02098-4","url":null,"abstract":"<div>Fracture toughness, or the resistance of materials to crack propagation, is an important component of the structural strength of steels and alloys. The most widely used criterion in linear fracture mechanics is the critical stress intensity factor known as plane-strain fracture toughness (KIc). The significant scatter in KIc values observed in practice is typically caused by structural differences between specimens. However, obtaining accurate KIc values for evaluating ductile materials is possible given an acceptable level of constraint on plastic deformation at the fatigue crack tip. Traditionally, this is achieved by increasing specimen dimensions, which is often limited by the size of the rolled stock. In this regard, nonlinear fracture mechanics criteria have been developed, such as the energy criterion (Cherepanov-Rice integral (J-integral) or Jc) and the deformation criterion (critical crack tip opening displacement (CTOD) or δc). Variations in fracture toughness levels across different specimens (for a given structural state of the material) are generally due to the varying morphology of nominally identical structures. However, multiscale structures are often heterogeneous, even within a single specimen. In such cases, there is a high risk that fracture toughness criteria may become a misleading average. To refine approaches for determining nonlinear fracture mechanics criteria, the crack opening geometry and propagation patterns were analyzed for specimens made of heat-treatable structural steels 38KhN3MFA-Sh and 15Kh2NMFA-Sh with varying degrees of structural heterogeneity. By using a traditional fracture toughness testing scheme, the Jc and δc criteria were determined, while accounting for stable crack growth and the curvature of the crack front.</div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 11","pages":"1705 - 1718"},"PeriodicalIF":0.9,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148458859","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

Rheological model for deformation of AK7 alloy AK7合金变形流变模型

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-04-23 DOI: 10.1007/s11015-026-02108-5

I. L. Konstantinov, S. B. Sidelnikov, Y. V. Baykovskiy, M. V. Chukin, E. S. Lopatina, D. S. Voroshilov, M. P. Bundin, D. S. Stenin, P. O. Yuryev

引用次数: 0

Enhancement of the thermal insulation insert in a blast furnace tuyere for natural gas injection through flange openings 通过法兰开口注入天然气的高炉风口保温插件的改进

IF 0.9 4区材料科学

Metallurgist Pub Date : 2026-04-23 DOI: 10.1007/s11015-026-02090-y

E. A. Volkov, M. K. Mikhailova, I. A. Levitskiy, A. G. Radyuk, M. M. Skripalenko, V. V. Sukhanovsky, A. E. Titlyanov

引用次数: 0

Evaluation of a bioleaching process for scandium and total rare earth elements from brown coal fly ash 褐煤飞灰中钪及总稀土的生物浸出工艺评价