Metallurgist最新文献_第3页

Martensitic transformation in sintered powder steels with ultrafine particles 超细颗粒烧结粉末钢的马氏体相变

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01957-w

M. S. Egorov, R. V. Egorova

引用次数: 0

Chemical composition of pipe steel corrosion products in gas condensate 管道钢在冷凝水中腐蚀产物的化学成分

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01974-9

A. S. Guzenkova, I. V. Artamonova, S. A. Guzenkov, S. S. Ivanov

{"title":"Chemical composition of pipe steel corrosion products in gas condensate","authors":"A. S. Guzenkova, I. V. Artamonova, S. A. Guzenkov, S. S. Ivanov","doi":"10.1007/s11015-025-01974-9","DOIUrl":"10.1007/s11015-025-01974-9","url":null,"abstract":"<div><p>The composition of corrosion products and solid deposits in the form of conical protrusions in the vicinity of a through-hole discovered during the repair of a gas condensate well after 256 days of operation in the Dengizkul field (Uzbekistan) was investigated. The area of corrosive destruction was located 5–8 cm from the perimeter of the through hole and extended in the direction of gas condensate flow. The quantitative distribution of nine chemical elements in corrosion products and solid deposits was determined. These deposits contain all the alloying and impurity elements of the pipe steel, as well as chlorine originating from gas condensate, hydrochloric acid used for well treatment, and water. In addition to iron, the highest concentration of sulfur in the corrosion products is observed, ranging from 19.29 to 33.85 wt %, indicating that iron is predominantly present in the form of sulfides. The concentration of the remaining alloying and impurity elements is generally less than 1%, but in samples from certain areas it reaches up to 2.23 wt %. The concentrations of chlorine, calcium, and silicon in solid deposits from gas condensate-containing fluids exceed their levels in corrosion products. These elements are present in concentrations greater than 1%. The research findings may prove useful in understanding the mechanism of pipe steel degradation and in optimizing acid treatment processes during well operations.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 4","pages":"572 - 577"},"PeriodicalIF":0.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145196257","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 the fine structure of pipe steel after long-term holding at elevated temperature 管钢长期高温保温后的精细组织研究

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01951-2

V. A. Egorov, P. P. Stepanov, A. A. Kichkina, T. S. Esiev, V. O. Makhanev, A. B. Arabey

{"title":"Study of the fine structure of pipe steel after long-term holding at elevated temperature","authors":"V. A. Egorov, P. P. Stepanov, A. A. Kichkina, T. S. Esiev, V. O. Makhanev, A. B. Arabey","doi":"10.1007/s11015-025-01951-2","DOIUrl":"10.1007/s11015-025-01951-2","url":null,"abstract":"<div><p>Or aim is to study the processes of changes in the microstructure and fine structure of pipe steel in he course of long-term holding at elevated temperatures (400 °C). By the method of transmission-electron microscopy, we investigated samples 1420 × 25.8 mm in size of the base metal of a pipe of strength class K60 in the initial state and after holding for up to 200 h at a temperature of 400 °C. It is shown that, in the course of long-term holding at 400 °C, we do not observe any noticeable changes in the structure of the ferrite matrix of samples of the base metal of the pipes made of specially developed steel, including the dislocation and subgrain structures of ferrite, as compared with samples without tempering. We recorded the changes observed in the course of tempering at 400 °C in the high-carbon phase of the samples as compared to an initial sample. Indeed, we detect tempering of martensite “islands,” precipitation of cementite particles, and decomposition of austenite into a ferrite–cementite mixture. Carbonitride phases do not undergo any visible changes in the course of tempering and are identical for all investigated samples. The obtained results serve as a microstructural justification of stability of the level of the mechanical properties of the investigated steel as a result of long-term holding at 400 °C.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 3","pages":"369 - 380"},"PeriodicalIF":0.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909857","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

Developing a model of metal structure formation in the heat-affected zone of high-strength pipe steels 建立了高强度管材热影响区金属组织形成模型

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01952-1

M. R. Khismatullin, L. A. Efimenko, A. A. Ramus

引用次数: 0

Hot-extrusion of platinum-rhodium alloy tubes 热挤压铂铑合金管

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01964-x

Yu. N. Loginov, A. E. Pervukhin, G. V. Shimov, N. I. Bushueva

引用次数: 0

Gas atomized powder compositions of heat-resistant titanium aluminide alloys 耐热铝化钛合金的气体雾化粉末成分

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-15 DOI: 10.1007/s11015-025-01956-x

P. V. Panin, I. A. Bogachev, E. B. Alekseev, E. A. Lukina, D. I. Sukhov, S. A. Naprienko

引用次数: 0

Control methods for preventing roll slippage in asymmetric sheet rolling 不对称薄板轧制中防止辊滑的控制方法

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-14 DOI: 10.1007/s11015-025-01977-6

Aleksandr V. Kozhevnikov, Anton V. Samoilov

引用次数: 0

Phase composition and structure of hypereutectic silumin AK20 irradiated by a pulsed electron beam of sub-millisecond exposure duration 亚毫秒脉冲电子束辐照AK20过共晶硅的相组成和结构

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-14 DOI: 10.1007/s11015-025-01954-z

M. E. Rygina, A. N. Prudnikov, M. S. Petukevich, A. D. Teresov, Yu. F. Ivanov

{"title":"Phase composition and structure of hypereutectic silumin AK20 irradiated by a pulsed electron beam of sub-millisecond exposure duration","authors":"M. E. Rygina, A. N. Prudnikov, M. S. Petukevich, A. D. Teresov, Yu. F. Ivanov","doi":"10.1007/s11015-025-01954-z","DOIUrl":"10.1007/s11015-025-01954-z","url":null,"abstract":"<div><p>In this study, the authors analyzed the structural-phase transformations in the surface layer of hypereutectic silumin AK20 (Al—20 wt. % Si), initiated by a sub-millisecond exposure to a pulsed electron beam. It has been established that irradiation of hypereutectic silumin with a pulsed electron beam (17 keV, (15–70) J/cm<sup>2</sup>, 150 μs, 3 pulses, 0.3 s<sup>-1</sup>) is accompanied by high-speed melting of a surface layer up to 120 μm thick, followed by high-speed crystallization with the formation of a cellular-columnar type structure with a transverse cell size of 0.5 to 2.9 μm. It has been shown that crystallization cells are formed by a solid solution based on aluminum and are separated by layers 120 to 700 nm thick, formed by amorphous and crystalline (nanocrystalline) silicon. It has been established that the sizes of cells and the layers separating them increase with increasing energy density of the electron beam. Using X‑ray diffraction analysis methods, changes in the parameters and micro-distortions of the crystal lattice of aluminum and silicon were revealed after exposure to a pulsed electron beam.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 3","pages":"401 - 409"},"PeriodicalIF":0.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909702","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

Peculiarities of fracture of iron–ore pellets in the course of reduction heat treatment 铁矿球团在还原热处理过程中断裂的特点

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-14 DOI: 10.1007/s11015-025-01949-w

I. S. Bersenev, V. V. Bragin, Yu. A. Chesnokov, A. I. Gruzdev, E. R. Sabirov, N. A. Spirin

{"title":"Peculiarities of fracture of iron–ore pellets in the course of reduction heat treatment","authors":"I. S. Bersenev, V. V. Bragin, Yu. A. Chesnokov, A. I. Gruzdev, E. R. Sabirov, N. A. Spirin","doi":"10.1007/s11015-025-01949-w","DOIUrl":"10.1007/s11015-025-01949-w","url":null,"abstract":"<div><p>Strength and metallurgical properties of pellets are determined by their structure. Therefore, the problem of investigation of their relationships remains quite urgent. The aim of the present paper is to analyze the specific features of fracture of the pellets in the course of reduction and determine the ratio of different fractions of the broken pellets (fractions +5 mm and −0.5 mm) obtained as a result of high-temperature reduction treatment. We use the experimental methods of investigations. It was discovered that the strength of pellets in the course of reduction decreases down to 0.21±0.40 of the initial compression strength. The minimum level of strength of the pellets is observed for the degree of reduction equal to 20–40%, which corresponds to the maximum level of internal tension in the course of rearrangement of the crystal lattice of iron-ore phases. The yields of reference grain-size fractions in the course of ISO 13930 tests are correlated with each other and, moreover, the yields of the fractions −3.15 and −0.5 are comparable. The fine fracture products are mainly represented by dust formed as an abrasion by-product. The process of cleavage of pellets plays a relatively minor role in their destruction in the course of reduction (at most 50% of the substandard fraction). The grain-size composition of the products of the process of destruction of pellets running in the course of reduction is partially correlated with the fracture products in the cold state: the yield of a fraction of 0.5 mm is correlated for cold and hot strength, while yield of a fraction of +5 mm depends on the specific features of microstructure. If the microstructure is mostly represented by the iron-ore phases (at least 97%), then the pellets are more susceptible to fracture by cleavage accompanied by the formation of a size fraction of −5 mm.</p></div>","PeriodicalId":702,"journal":{"name":"Metallurgist","volume":"69 3","pages":"349 - 357"},"PeriodicalIF":0.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909704","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

Mechanized system for feeding slag-forming mixture into the mold of a continuous casting machine for extra-large round billets 用于向超大型圆坯连铸机的结晶器中输送成渣混合物的机械化系统

IF 0.8 4区材料科学

Metallurgist Pub Date : 2025-07-14 DOI: 10.1007/s11015-025-01961-0

Sergey P. Eron’ko, Elena V. Oshovskaya, Maksim I. Prilutskiy, Vladislav E. Seregin

引用次数: 0