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Two aspects of high interfacial strength regarding the cracking behaviour of MCrAlY-coated superalloys 高界面强度与mccrally涂层高温合金开裂行为的关系
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-16 DOI: 10.1080/02670836.2023.2199571
Jianan Song, Jia Huang, Zhilai Lu, H. Qi
{"title":"Two aspects of high interfacial strength regarding the cracking behaviour of MCrAlY-coated superalloys","authors":"Jianan Song, Jia Huang, Zhilai Lu, H. Qi","doi":"10.1080/02670836.2023.2199571","DOIUrl":"https://doi.org/10.1080/02670836.2023.2199571","url":null,"abstract":"In this study, we investigated the cracking behaviour of MCrAlY-coated superalloys having different interfacial strengths. A cyclic damage-coupled cohesive zone model is proposed to describe the fatigue crack initiation and propagation at the interface between the coating and the substrate. Our results indicate that a high interfacial strength leads to a significant stress concentration owing to the increasing interfacial stiffness. Moreover, high interfacial strength delays interfacial crack propagation but promotes the accumulation of deformation energy in the substrate, which accelerates fatigue crack initiation in the substrate. This work shows two aspects of high interfacial strength and can provide new insights into coating design.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"65 1","pages":"2353 - 2362"},"PeriodicalIF":1.8,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79748360","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: 2
Understanding substrate-driven growth mechanism of copper silicide nanoforms and their applications 纳米硅化铜的衬底驱动生长机理及其应用
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-12 DOI: 10.1080/02670836.2023.2199570
S. Sen, Prajakta Kanitkar, K. Muthe
{"title":"Understanding substrate-driven growth mechanism of copper silicide nanoforms and their applications","authors":"S. Sen, Prajakta Kanitkar, K. Muthe","doi":"10.1080/02670836.2023.2199570","DOIUrl":"https://doi.org/10.1080/02670836.2023.2199570","url":null,"abstract":"The growth mechanism of various nanoforms of copper/copper silicide on Si substrates with different orientations is reported here. The triangular, square and rectangular copper/copper silicide nanostructures are deposited on silicon substrates with (111), (100) and (110) orientations respectively, by thermal evaporation of metallic copper at different substrate temperatures. Investigations confirm that the nanostructures consist of a pure copper layer on top of a copper silicide layer. The morphology and growth behaviour studies confirmed for the first time that the formation of well-defined structures and shapes are governed by the Si substrate orientation and the surface reconstruction of the Si planes. The copper silicide nanostructures are used in field emission applications and also serve as a template for the growth of carbon nano-fibre.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"19 1","pages":"2341 - 2352"},"PeriodicalIF":1.8,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74939665","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
Fabrication of nanostructured electrodes for electrochemical surface-enhanced Raman spectroscopy (E-SERS): a review 电化学表面增强拉曼光谱(E-SERS)纳米结构电极的制备研究进展
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-12 DOI: 10.1080/02670836.2023.2197729
T. Jones
{"title":"Fabrication of nanostructured electrodes for electrochemical surface-enhanced Raman spectroscopy (E-SERS): a review","authors":"T. Jones","doi":"10.1080/02670836.2023.2197729","DOIUrl":"https://doi.org/10.1080/02670836.2023.2197729","url":null,"abstract":"ABSTRACT Electrochemical surface-enhanced Raman spectroscopy (E-SERS) is a powerful technique for the detection of trace levels of analytes in solution. It has wide ranging applications with a particular focus on biomarker detection. To perform E-SERS, nanostructured plasmonic metal electrodes are needed. Currently, a variety of fabrication methods are employed. This review defines the requirements for E-SERS electrodes and then describes and evaluates the current fabrication methods. The limitations of these techniques are discussed with the balance between ease of manufacture and magnitude of enhancement being identified as the key issue. Finally, suggestions for future areas of research are presented.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"56 1","pages":"2287 - 2301"},"PeriodicalIF":1.8,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84857812","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
Reverse strain effects in the defect states in aluminium doped ZnO 铝掺杂ZnO缺陷态的反向应变效应
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-12 DOI: 10.1080/02670836.2023.2197349
R. Dash, N. Kumari, Soumita Jana, A. Bhattacharyya
{"title":"Reverse strain effects in the defect states in aluminium doped ZnO","authors":"R. Dash, N. Kumari, Soumita Jana, A. Bhattacharyya","doi":"10.1080/02670836.2023.2197349","DOIUrl":"https://doi.org/10.1080/02670836.2023.2197349","url":null,"abstract":"ZnO was synthesised by the sol–gel method using zinc nitrate as the precursor. ZnO was doped with Al. Stress in the lattice was evident from the XRD peak shifts. A higher concentration of Al+3 showed a reverse strain effect also causing a reverse effect in the optical properties. An increase in crystallite size due to increased Al+3 was observed. A variation in absorption intensity based on the defect energy levels was observed. A difference in energy of the emission and absorption spectra resulting from defects in the material and non-radiative decay was seen. A change in the band gap was observed with changes in different dopant concentrations. These findings are useful for photocatalytic as well as antibacterial and anticancer treatments.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"102 1","pages":"2269 - 2276"},"PeriodicalIF":1.8,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80676666","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: 1
Cauliflower-like strontium-doped SnO2 nanoparticles for photocatalytic degradation 菜花状锶掺杂SnO2纳米粒子光催化降解
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-12 DOI: 10.1080/02670836.2023.2197725
S. Vallimeena, B. Helina
{"title":"Cauliflower-like strontium-doped SnO2 nanoparticles for photocatalytic degradation","authors":"S. Vallimeena, B. Helina","doi":"10.1080/02670836.2023.2197725","DOIUrl":"https://doi.org/10.1080/02670836.2023.2197725","url":null,"abstract":"Three-dimensional (3D) cauliflower-shaped Strontium (Sr)-doped SnO2 nanoparticles were synthesised at ambient temperature through a simple co-precipitation technique. The 3D cauliflower-shaped 7 wt-% Sr-doped SnO2 nanoparticles increase light harvesting features and also promote electron transport across grain boundaries. 3D cauliflower-shaped Sr-doped SnO2 nanoparticles offer low charge transfer resistance, which is validated by the electrochemical impedance spectroscopy spectrum. XRD studies of SnO2 and Sr-doped SnO2 have revealed a tetragonal structure, and PL spectra corroborate the greater charge splitting. This study may be the first ever report on the 3D microstructure of cauliflower-shaped 7 wt-% Sr-doped SnO2 nanoparticles that demonstrated higher photocatalytic activity under visible-light for MB dye solution.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"158 1","pages":"2277 - 2286"},"PeriodicalIF":1.8,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82921792","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
Estimating threshold stresses using parametric equations for creep: application to low-alloy steels 用蠕变参数方程估计阈值应力:在低合金钢中的应用
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-12 DOI: 10.1080/02670836.2023.2198395
M. Evans
{"title":"Estimating threshold stresses using parametric equations for creep: application to low-alloy steels","authors":"M. Evans","doi":"10.1080/02670836.2023.2198395","DOIUrl":"https://doi.org/10.1080/02670836.2023.2198395","url":null,"abstract":"The power law model produces both temperature varying and unreliable estimates for its parameters. Threshold stresses have been suggested as a solution. The power law and Wilshire models are modified to include this stress and estimation and error decomposition methods applied to assess its importance in representing failure times. A statistically significant and temperature-dependent threshold stress was identified in two low-alloy steels. This threshold stress was closer to the operating stress in the Wilshire model. The inclusion of this stress reduced interpolation errors, but this improvement was greater in the Wilshire model. The Wilshire model increased the random component of these errors at all temperatures in one material, but only at some temperatures for the other.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"72 1","pages":"2302 - 2317"},"PeriodicalIF":1.8,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76309617","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: 1
Numerical prediction of lack-of-fusion defects in selective laser melted AlSi10Mg alloy 选择性激光熔化AlSi10Mg合金未熔合缺陷的数值预测
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-12 DOI: 10.1080/02670836.2023.2198889
Alexandra Morvayová, N. Contuzzi, G. Casalino
{"title":"Numerical prediction of lack-of-fusion defects in selective laser melted AlSi10Mg alloy","authors":"Alexandra Morvayová, N. Contuzzi, G. Casalino","doi":"10.1080/02670836.2023.2198889","DOIUrl":"https://doi.org/10.1080/02670836.2023.2198889","url":null,"abstract":"Despite the emerging research, it is still troublesome to control the defect formation in selective laser melted parts. In this paper, a mechano-thermo-fluid dynamical FEM model at meso-scale was proposed. The model calculates and predicts the volume and dimensions of lack-of-fusion (LOF) defects according to the applied process parameters. The numerical model was validated with experimentally assessed volume of lack-of-fusion defects and melt pool dimensions. Results shown the lowest volume of LOF defects (0.41%) in specimen produced with 275 W and scanning speed of 400 mm/s. Laser power was determined as a parameter majorly impacting the volume and dimensions of LOF in selective laser melted parts.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"87 3 1","pages":"2334 - 2340"},"PeriodicalIF":1.8,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87691286","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 Ca content on microstructure and strength of as-extruded Mg-1.0Al-xCa alloy Ca含量对挤压态Mg-1.0Al-xCa合金组织和强度的影响
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-10 DOI: 10.1080/02670836.2023.2194139
Zhaoxiang He, Sen Wang, Chuncheng Ge, Chubin Yang, Qingshan Yang, H. Pan, G. Qin
{"title":"Effect of Ca content on microstructure and strength of as-extruded Mg-1.0Al-xCa alloy","authors":"Zhaoxiang He, Sen Wang, Chuncheng Ge, Chubin Yang, Qingshan Yang, H. Pan, G. Qin","doi":"10.1080/02670836.2023.2194139","DOIUrl":"https://doi.org/10.1080/02670836.2023.2194139","url":null,"abstract":"In this work, the effects of Ca content and extrusion temperature on the microstructures and mechanical properties of Mg–1Al–xCa alloys have been investigated. For Mg–1.0Al–0.4Ca (wt-%, AX10) dilute alloy, decreasing extrusion temperature from 290°C to 260°C can inhibit the dynamic recrystallisation (DRX) process, and the yield strength (YS) is also increased from ∼266 ± 6 MPa to ∼309 ± 3 MPa. When increasing the Ca content, Mg–1.0Al–0.8Ca (wt-%, AX11), a higher density of the Al2Ca phase is dispersed at the grain boundaries, which can further restrict the growth of DRXed grains, only ∼1.0 µm. Consequently, the higher YS of ∼330 ± 5 MPa can be obtained. The relevant results can shed light on designing other high-strength and low-alloyed Mg wrought alloys.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"16 1","pages":"2111 - 2116"},"PeriodicalIF":1.8,"publicationDate":"2023-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89807254","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 microstructure and mechanical properties of 2219 alloy during ultrasonic treatment 超声处理2219合金的显微组织和力学性能
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-06 DOI: 10.1080/02670836.2023.2194764
A. Li, Rishan Jiang, Rui-qing Li, Lihua Zhang
{"title":"The microstructure and mechanical properties of 2219 alloy during ultrasonic treatment","authors":"A. Li, Rishan Jiang, Rui-qing Li, Lihua Zhang","doi":"10.1080/02670836.2023.2194764","DOIUrl":"https://doi.org/10.1080/02670836.2023.2194764","url":null,"abstract":"High-intensity ultrasonic melt treatment technique plays a key role in improving the performance of large-scale 2219 alloy ingot (Φ630 mm × 4500 mm). In this current paper, ultrasonic treatment-assisted casting techniques were developed and applied to manufacture large-scale 2219 aluminium (Al) alloy ingot in direct chill casting (DC). The industry-level experiments revealed that the α-Al grains of the ingot with ultrasonic (USDC) were refined, the area fraction of the coarse Al2Cu eutectic phase showed a decreasing trend, and the mechanical properties were lightly improved than without ultrasonic ingot (DC). Based on the present results and previous proposed hypotheses, the synergistic effects of cavitation and acoustic streaming were considered as the dominant mechanisms of USDC.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"40 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76677149","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: 1
Effect of radial-shear rolling on particle’s morphology and mechanical properties of AA7075 alloy 径向剪切轧制对AA7075合金晶粒形貌及力学性能的影响
IF 1.8 4区 材料科学
Materials Science and Technology Pub Date : 2023-04-05 DOI: 10.1080/02670836.2023.2196471
Yu. V. Gamin, T. Akopyan, T. Kin, S. Galkin, Aleksander Aleshchenko
{"title":"Effect of radial-shear rolling on particle’s morphology and mechanical properties of AA7075 alloy","authors":"Yu. V. Gamin, T. Akopyan, T. Kin, S. Galkin, Aleksander Aleshchenko","doi":"10.1080/02670836.2023.2196471","DOIUrl":"https://doi.org/10.1080/02670836.2023.2196471","url":null,"abstract":"Effect of radial shear rolling on the morphology of intermetallic particles, and the mechanical properties of 7075 alloy at different processing temperatures and heat treatment after deformation was investigated. The results were consistent with data on metallographic investigation of phase particle shape, counts, and distribution. It was found that the formation, quantitative distribution, and circularity of particles at the surface and in the centre of the bar depended on the processing temperature and temperature gradient between surface and centre and were defined with a scheme of stresses in the deformation zone. The values of strength properties for all bars obtained by RSR depended on the processing regimes, while plasticity (elongation to failure δ = 14%–20%) increased with the growth of processing temperature. Article highlights Radial shear rolling makes it possible to obtain aluminium alloy bars with a gradient structure and a combination of high strength and ductility. The influence of the RSR method is reflected in the nature of the distribution of dispersive particles in the matrix of alloy. Mechanical properties of bars subjected to the RSR method depend on the initial processing regimes, while the level of plasticity increases with the growth of processing temperature.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"2009 1","pages":"2205 - 2216"},"PeriodicalIF":1.8,"publicationDate":"2023-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86270546","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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