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Strength of the Welded Joint of the Connecting Pipe and the Collector of the Boiler Primary Steam Superheater 锅炉初级蒸汽过热器连接管和集热器焊接接头的强度
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-16 DOI: 10.1007/s11003-024-00782-x
{"title":"Strength of the Welded Joint of the Connecting Pipe and the Collector of the Boiler Primary Steam Superheater","authors":"","doi":"10.1007/s11003-024-00782-x","DOIUrl":"https://doi.org/10.1007/s11003-024-00782-x","url":null,"abstract":"<p>The strength of the welded joint of the connecting pipe and the collector made of 12Kh1MF steel is investigated within the framework of the model of elastic solid, taking into account their real geometry and the dependence of the material characteristics on temperature. Zones of the maximum operating stresses in the joint for different types of welding are identified. Design and technological solutions aimed at significant reduction of the maximum operational stresses are proposed.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"22 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155586","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 Tribotechnical Properties of Deposited Composite Layers Based on PG 10N-01 Alloy Containing AL2O3 基于含 AL2O3 的 PG 10N-01 合金的沉积复合层的结构和摩擦技术性能
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-16 DOI: 10.1007/s11003-024-00781-y
S. A. Luzan, V. A. Bantkovskiy
{"title":"Structure and Tribotechnical Properties of Deposited Composite Layers Based on PG 10N-01 Alloy Containing AL2O3","authors":"S. A. Luzan, V. A. Bantkovskiy","doi":"10.1007/s11003-024-00781-y","DOIUrl":"https://doi.org/10.1007/s11003-024-00781-y","url":null,"abstract":"<p>The microstructure of deposited layers with a composite material (CM) based on the self-fluxing PG-10N-01 alloy, modified with a mechanoactivated CM obtained using the self-propagating hightemperature synthesis, was studied. The X-ray phase analysis revealed in the deposited layer structure the inclusions of nickel borides NiB , Ni<sub>2</sub>B , Ni<sub>3</sub>B , chromium borides CrB , Cr<sub>2</sub>B , chromium carbides Cr<sub>3</sub>C<sub>2</sub> , Cr<sub>7</sub>C<sub>3</sub> , distributed in the nickel matrix. The modifying CM during arc welding contributed to the grinding of structure and reduction of the friction coefficient, increase of the microhardness of the deposited coatings, and decrease of the wear intensity in various friction conditions.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"78 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155549","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 Hydrogen Embrittlement Risk of Long-Term Operated Gas Pipelines Made of 10G2BT Steel 10G2BT 钢制天然气管道长期运行的氢脆风险评估
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-16 DOI: 10.1007/s11003-024-00777-8
A. M. Syrotyuk, R. L. Leshchak, M. V. Hrynenko, N. T. Hembara
{"title":"Evaluation of Hydrogen Embrittlement Risk of Long-Term Operated Gas Pipelines Made of 10G2BT Steel","authors":"A. M. Syrotyuk, R. L. Leshchak, M. V. Hrynenko, N. T. Hembara","doi":"10.1007/s11003-024-00777-8","DOIUrl":"https://doi.org/10.1007/s11003-024-00777-8","url":null,"abstract":"<p>It was established that the metal of long-term operated gas pipelines made of 10G2BT steel contains relatively little hydrogen, which does not create prerequisites for the pipes hydrogen embrittlement. However, for the considered cases, it was established that the microstructure of steel is characterized by increased defectiveness, which increases with the extension of the pipeline operation time. Such a defective microstructure has an increased ability of absorbing hydrogen, and therefore there is a risk of hydrogen embrittlement of the material. It was concluded that the use of long-term operated pipelines for transportation mixtures of natural gas and hydrogen without additional verification is problematic.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"34 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140155585","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
The Influence of Corrosion Dissolution of the Metal Surface Layer on the Stress Concentration Factor in Butt-Welded Joins 金属表层腐蚀溶解对对接焊接接头应力集中系数的影响
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-11 DOI: 10.1007/s11003-024-00775-w
A. V. Moltasov, A. V. Klymenko
{"title":"The Influence of Corrosion Dissolution of the Metal Surface Layer on the Stress Concentration Factor in Butt-Welded Joins","authors":"A. V. Moltasov, A. V. Klymenko","doi":"10.1007/s11003-024-00775-w","DOIUrl":"https://doi.org/10.1007/s11003-024-00775-w","url":null,"abstract":"<p>The dissolution of the metal surface layer of butt-welded joints samples made of 09G2S steel by the anodic-cathodic process in the electrolyte, as a result of which the geometric parameters of the welded joint changed, was studied. For example, after corrosion tests the radius of transition from the weld metal to the base metal on the facial side of the joint increased from 3.07 to 3.88 mm, and on its root, side increased from 2.16 to 3.09 mm. Changes in the geometrical parameters of a welded joint affect the value of the stress concentration factors (SCF), which determine fatigue life of the welded joints Therefore, analytical calculations of the SCF in the sample of the 09G2S steel butt-weld before and after dissolution of the metal surface layer were performed. In this case, the existing formula for SCF determination on the root side of the joint was modified for the case when the bases of facial and root reinforcements were close enough. It was found that after corrosion dissolution of the metal surface layer, the maximum value of the SCF in the specimen decreased from 1.87 to 1.67.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"89 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140098121","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 Surface Displacement Field under Dynamic Loads by the Method of Phase-Shifting Correlation Speckle Pattern Interferometry 利用移相相关斑点图干涉测量法确定动态载荷下的表面位移场
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-11 DOI: 10.1007/s11003-024-00771-0
L. I. Muravsky
{"title":"Determination of the Surface Displacement Field under Dynamic Loads by the Method of Phase-Shifting Correlation Speckle Pattern Interferometry","authors":"L. I. Muravsky","doi":"10.1007/s11003-024-00771-0","DOIUrl":"https://doi.org/10.1007/s11003-024-00771-0","url":null,"abstract":"<p>A brief review of known digital speckle pattern interferometry methods for retrieving the surface displacement and deformation fields under dynamic loads is presented. A new nondestructive test method of three-step phase-shifting correlation speckle pattern interferometry to study the dynamic loads of structural materials is proposed. In this method three speckle interferograms (SIs) of the specimen surface, differing only by arbitrary unknown phase shifts, are recorded before the loading and one SI is recorded under the dynamic load. The surface displacement field under dynamic loading is determined using the obtained SIs. Two algorithms for the implementation of the method are proposed. They use an integrating bucket technique to record SIs and make it possible to determine the phase maps of the surface displacement fields at any moment of applying the dynamic load. We can use this method to produce a temporal sequence of surface displacement fields during loading.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"35 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140098119","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
Aluminum Alloy Corrosion Inhibition with a Composition of Guar Gum and Potassium Sorbate 使用瓜尔胶和山梨酸钾成分抑制铝合金腐蚀
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-11 DOI: 10.1007/s11003-024-00774-x
{"title":"Aluminum Alloy Corrosion Inhibition with a Composition of Guar Gum and Potassium Sorbate","authors":"","doi":"10.1007/s11003-024-00774-x","DOIUrl":"https://doi.org/10.1007/s11003-024-00774-x","url":null,"abstract":"<p>High efficiency of corrosion inhibition of aluminum alloy in a 0.1% NaCl solution with a composition of guar gum and potassium sorbate was established. The formation of an organic adsorption film was found on the surface of the metal samples. The degree of metal protection against corrosion by this inhibitory composition was more than 90%. The results of the research can be used for the development of eco-friendly “green” corrosion inhibitors of aluminum alloys from renewable plant materials.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"41 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097856","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
Specific Features of Stresses Relaxation and Recrystallization of Steel under Laser Heating 激光加热下钢材应力松弛和再结晶的具体特征
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-08 DOI: 10.1007/s11003-024-00772-z
S. I. Gubenko
{"title":"Specific Features of Stresses Relaxation and Recrystallization of Steel under Laser Heating","authors":"S. I. Gubenko","doi":"10.1007/s11003-024-00772-z","DOIUrl":"https://doi.org/10.1007/s11003-024-00772-z","url":null,"abstract":"<p>The features of plastic relaxation and recrystallization processes of steels of various types with different crystal lattices were studied. It was established that structural signs of collective or secondary recrystallization, as well as high-speed shear or rotational plastic deformation, were observed in the laser impact zone. The conditions of the course of these processes associated with the behavior of defects in the crystal structure under pulsed loading were discussed. The conditions of laser action ensured the dynamic processes of restoring the structure of steels.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"9 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140075897","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
Mechanisms of Pitting Corrosion of Austenitic Steels of Heat Exchangers in Circulating Waters and its Prediction 热交换器奥氏体钢在循环水中的点蚀机理及其预测
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-03-08 DOI: 10.1007/s11003-024-00773-y
O. E. Narivs’kyi, S. O. Subbotin, T. V. Pulina, S. D. Leoshchenko, M. S. Khoma, N. B. Ratska
{"title":"Mechanisms of Pitting Corrosion of Austenitic Steels of Heat Exchangers in Circulating Waters and its Prediction","authors":"O. E. Narivs’kyi, S. O. Subbotin, T. V. Pulina, S. D. Leoshchenko, M. S. Khoma, N. B. Ratska","doi":"10.1007/s11003-024-00773-y","DOIUrl":"https://doi.org/10.1007/s11003-024-00773-y","url":null,"abstract":"<p>Mathematical models of the dependence of the critical pitting temperature (CPT) of AISI 304, AISI 321, 12Kh18N10T and 08Kh18N10 steels on their chemical composition, structural heterogeneity, as well as pH and chloride concentration of circulating water were developed. Models were based on quadratic regressions with first order partial derivatives and on polynomials with a reduced number of signs. By applying mathematical models, it was established that the pitting resistance of these steels increases with an increase in the average distance between oxides, the average diameter of austenite grain, specific magnetic susceptibility, the decrease in the volume of δ-ferrite and the number of the smallest oxides up to 1.98 μm in size. The positive effect of Cr and Mn on the pitting resistance of the studied steels was studied. Probably this occurred due to the increase of the solubility of N in austenite, reduction of the Fe atoms diffusion intensity to the surface of stable pittings and the increase of Cr to metastable pittings, contributing to their repassivation, which increased the pitting resistance of steels. The developed mathematical models are recommended for choosing optimal grades of austenitic steels and predicting their pitting resistance during operation of heat exchangers in circulating waters.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"100 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140075829","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
Estimation of Characteristics of Nanocrystalline Layer Using the Surface Acoustic Waves 利用表面声波估算纳米晶层的特性
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-02-08 DOI: 10.1007/s11003-024-00760-3
V. R. Skalskyi, O. M. Mokryi, O. I. Zvirko, V. I. Kyryliv, I. M. Romanyshyn, O. V. Maksymiv
{"title":"Estimation of Characteristics of Nanocrystalline Layer Using the Surface Acoustic Waves","authors":"V. R. Skalskyi, O. M. Mokryi, O. I. Zvirko, V. I. Kyryliv, I. M. Romanyshyn, O. V. Maksymiv","doi":"10.1007/s11003-024-00760-3","DOIUrl":"https://doi.org/10.1007/s11003-024-00760-3","url":null,"abstract":"<p>The effect of the nanocrystalline layer formed by mechanical pulse treatment on the velocity of surface acoustic waves in 65G steel samples was studied. Acoustic waves with frequencies equal to 3; 6 and 9 MHz were used. Different thicknesses of the nanocrystalline layer were obtained by the stepwise grinding method. The method of estimating the acoustic properties of the formed layer based on the velocity of surface acoustic waves in the case when the depth of wave penetration is greater than its thickness was described. An additional measurement of the nanocrystalline layer thickness was carried out using metallographic studies to determine its acoustic characteristics.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"23 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139755926","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
Thermoelastic State of a Heterogeneous Orthotropic Cylindrical Shell with an Open Profile under Transient Heating 具有开放轮廓的异质各向同性圆柱壳体在瞬态加热下的热弹性状态
IF 0.9 4区 材料科学
Materials Science Pub Date : 2024-02-08 DOI: 10.1007/s11003-024-00759-w
R. M. Kushnir, U. V. Zhydyk, V. M. Flyachok
{"title":"Thermoelastic State of a Heterogeneous Orthotropic Cylindrical Shell with an Open Profile under Transient Heating","authors":"R. M. Kushnir, U. V. Zhydyk, V. M. Flyachok","doi":"10.1007/s11003-024-00759-w","DOIUrl":"https://doi.org/10.1007/s11003-024-00759-w","url":null,"abstract":"<p>The thermoelastic state of a heterogeneous orthotropic circular cylindrical shell with an open profile under the condition of convective heat exchange between the surfaces of the shell and the environment is investigated. A generalized shear mathematical model of heterogeneous anisotropic shells of the first order and two-dimensional non-stationary heat conduction equations are used in this case. Using the methods of Fourier and Laplace integral transformations, an analytical solution to the non-stationary problem of thermal conductivity and the quasi-static problem of thermoelasticity for a finite hinged shell supported at the edges is found. The stress state and deflections of the shell are calculated for the case of material properties change in the radial direction according to the power law.</p>","PeriodicalId":18230,"journal":{"name":"Materials Science","volume":"34 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139772904","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
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