Materials Science and Technology最新文献

{"title":"Novel Ag3PO4-ZnO@GOTernary composite, synthesis, characterisation and photodegradation of Rhodamine B","authors":"Sadia Ghazanfar, Sana Sarfraz, H. M. Asif, Khalid Mahmood, Muhammad Mohsin Ali Khan, Muhammad Tariq, Muhamamd Usman, M. Sirajuddin","doi":"10.1177/02670836241226770","DOIUrl":"https://doi.org/10.1177/02670836241226770","url":null,"abstract":"Nowadays, photocatalytic degradation and removal of organic water pollutants such as dyes have gained worldwide attention due to their potential toxicity. The Ag3PO4-ZnO@GO ternary composite was successfully synthesised via hydrothermal process. The as-prepared ternary composite was characterised using Fourier Transform Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques. The prepared ternary composite was used as a photocatalyst in the degradation of Rhodamine B (RhB). The ternary nanocomposite exhibited a maximum degradation efficiency of 86% after light irradiation for 110 min as compared to pure ZnO (36%) and Ag3PO4-ZnO binary composite (46%) due to its improved photocatalytic efficiency under visible light, proficient charge separation and innovative electronic characteristics.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"63 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139604441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reorientation of grain crystal lattices in metals/alloys during electrocrystallisation under the action of force","authors":"O. Girin","doi":"10.1177/02670836241227018","DOIUrl":"https://doi.org/10.1177/02670836241227018","url":null,"abstract":"The purpose of the study was experimental verification of the proposed concept of phase formation in electrocrystallised metals/alloys via the stage of supercooled liquid state. In accordance with the purpose, the task was to reveal the features of formation of the crystallographic texture in metals/alloys during their electrocrystallisation under the action of small force. The effect of the emergence of a new crystallographic texture with lower surface energy in metals/alloys during electrocrystallisation under the action of small external force exerted in the direction opposite to the initial axis of the texture was experimentally established. The obtained result is one more proof of the validity of the concept of phase formation in electrocrystallised metals/alloys via the stage of supercooled liquid state.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"102 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139614670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of laying angles on stainless steel fabricated by selective laser melting","authors":"Cong Ni, Yan Shi, Weizhou Zhang, Wen Wang, Chaojie Liu","doi":"10.1177/02670836231224131","DOIUrl":"https://doi.org/10.1177/02670836231224131","url":null,"abstract":"This study aimed to investigate the effects of laying angles (0°, 15°, 30°, 45°, 60°, 75° and 90°) on surface roughness, density behaviour, residual stress, and mechanical properties of 316L stainless steel components fabricated by selective laser melting. The findings revealed that the 15° samples exhibited the best surface quality, while the 90° samples had a roughness of up to 18μm due to the staircase effect and balling behaviour. The residual stress of the samples decreased gradually as the laying angle increased. The density of the 0° samples reached 99.92%, whereas the 90° samples were only 99.62%. The 90° components exhibited a good tensile strength of 678 MPa, while the 0° samples had lower tensile strength.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":" 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139628059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of process parameters on the densification of SLM-produced Mg–Y–Sm–Zn–Zr alloy","authors":"Di Zhao, Wenli Wang, Kongkong Wang, Rongrong Xu, Haoyang Li, Guowen Dong","doi":"10.1177/02670836231223795","DOIUrl":"https://doi.org/10.1177/02670836231223795","url":null,"abstract":"In this study, Mg–Y–Sm–Zn–Zr samples were prepared using the selective laser melting technique. The influence of process parameters on the densification and mechanical properties of samples was systematically studied from a single-melt track to double melt tracks to block, and the formation mechanism of defects was analysed. Research results show that the appropriate laser power and scanning speed resulted in excellent single-melt path formability. When the scanning spacing was 80 μm, adjacent trajectories were closely connected without spheroidised particles and porosity defects. The densest samples were obtained at an energy density of 125 J/mm3 with maximum microhardness (86.8 ± 1.5 HV), and the compressive yield strength and ultimate strength reached 301.8 ± 5 MPa and 467.9 ± 5 MPa.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"64 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139534642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling heat-affected zone softening in dissimilar AZ31B and WE43 alloy welds","authors":"Anil Bandi, Muralimohan Cheepu, S. R. Bakshi","doi":"10.1177/02670836231212289","DOIUrl":"https://doi.org/10.1177/02670836231212289","url":null,"abstract":"In this study, AZ31B-H24 and WE43-T5 Mg alloys were joined using friction stir welding. The effect of base material position, tool offset and rotational speed on the microstructure and mechanical properties was investigated. With AZ31B on the advancing side (AS), distinct layers of both materials were observed in the nugget zone (NZ), while material mixing in the NZ was better with WE43 on the AS. A maximum joint strength of 207 MPa (97% of AZ31B) was observed with AZ31B on the AS without tool offset and a tool rotation speed of 600 RPM. The failure location was at the thermo-mechanically affected zone/heat-affected zone of AZ31B side when AZ31B was on the AS, while joints with WE43 on the AS failed in the NZ.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The wear properties of Al-BN nanosheets coating by cold spray","authors":"Hao Yang, Bin Zhang, Wen Sun, Ruitao Li, Weili Liu, Yun Wang, Koubao Zhang","doi":"10.1177/02670836231217164","DOIUrl":"https://doi.org/10.1177/02670836231217164","url":null,"abstract":"Pure aluminium (Al) and aluminium-boron nitride (Al-BN) nanosheets composite coating was fabricated by mechanical alloying and then cold spray. Scanning electron microscopy (SEM), energy spectrum analysis (EDS) and X-ray diffraction analysis (XRD) were performed to characterise the morphology and structure of the coatings. Furthermore, investigations were conducted to assess the hardness and wear behaviours of the coatings. The results indicate that BN nanosheets distributed in the Al matrix improve the hardness and antifriction properties of composites significantly. The addition of BN nanosheets into the Al coating resulted in a 44.19% increase in hardness and a 62.50% decrease in wear rate. BN nanosheets impede plastic deformation and provide self-lubrication to the coating.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"55 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139534956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Properties and elevated temperature wear mechanism of pure copper and TiC/Cu nanocomposites","authors":"Dong-Dong Zhang, Zhi-Wu Han, Jin-Guo Wang","doi":"10.1177/02670836231221401","DOIUrl":"https://doi.org/10.1177/02670836231221401","url":null,"abstract":"The properties and elevated temperature wear mechanism of pure copper and in situ TiC/Cu matrix composites fabricated via combustion synthesis assisted with hot press were investigated. Brinell hardness, compression properties and electrical conductivity were studied. It was found that of the Brinell hardness, yield strength and compressive strength of the composites is higher than sintered pure copper, however, the electrical conductivity and fracture strain of the composites are lower. Dry sliding friction and wear tests showed that the worn surface transformed from furrow to spalling pit and the wear rate increases with the increasing temperature and applied load, the wear failure changes gradually from surface plastic deformation, plough wear and oxidation wear to abrasive wear and fatigue spalling wear.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"65 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of quality monitoring for ultrasonic metal welding","authors":"Mengnan Feng, Ziyao Wang, Dequan Meng, Changle Liu, Jie Hu, Peng Wang","doi":"10.1177/02670836231215651","DOIUrl":"https://doi.org/10.1177/02670836231215651","url":null,"abstract":"Ultrasonic metal welding, an emerging solid state bonding method, has drawn extensive attention and been applied in various manufacturing scenarios in recent years. This paper reviews the quality monitoring system of ultrasonic metal welding from in-situ testing (online monitoring), non-in-situ testing and prediction of ultrasonic weld quality through machine learning methods. In-situ testing focuses on the acquisition of different process parameters and their relationship to weld quality, while non-in-situ testing focus on the monitoring indicators of the weld quality and the testing means. The exploration of machine learning methods concentrates on the influence of model selection and parameter input on prediction accuracy. Based on the analysis, the future development trend of ultrasonic weld quality monitoring is provided.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"64 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iso-material manufacturing of 304 stainless steel: Microstructure, corrosion-cavitation erosion synergistic behaviour","authors":"Bosheng Cao, C. Wu, Li Wang, Song Zhang, Chunhua Zhang, Xueying Sun","doi":"10.1177/02670836231214150","DOIUrl":"https://doi.org/10.1177/02670836231214150","url":null,"abstract":"Different from additive or subtractive manufacturing, iso-material manufacturing (also named isovolumetric manufacturing) was proposed in this work by laser surface melting (LSM), aiming at enhancing resistance to corrosion and cavitation erosion (CE) of 304 stainless steel. Experimental results showed that partial austenite transformed into martensite after LSM. The corrosion resistance of LSMed sample was improved. LSMed sample exhibited enhanced CE resistance, and was 2.5 and 2 times that of untreated sample in deionised water and 3.5 wt% NaCl solution, respectively. The passivation film for LSMed sample exhibited a high re-passive and self-repairing ability of passivation film. LSMed sample in this study exhibits a high or comparable corrosion and CE resistance in comparison with samples prepared by other fabrication method reported previously.","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"27 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical and intergranular corrosion properties of auto TIG welded TP347H-T91 dissimilar weldments","authors":"Pradip K. Gajjar, Bharat C. Khatri, Yadunandan B. Das, R. Moat","doi":"10.1177/02670836231212612","DOIUrl":"https://doi.org/10.1177/02670836231212612","url":null,"abstract":"The Biggest challenges coal-fired power plants are facing are improving their energy efficiencies and reducing their environmental impact due to CO2 and NOX emissions, can be attained by maximizing the steam pressure and temperature. However, the operating temperatures and pressures in boiler materials were restricted due to limited weldability of essential dissimilar joints between Austenitic Stainless Steel (ASS) and Creep-Enhanced Ferritic Steel (CEFS) due to carbon migration and sensitization. Present research work provides enhanced metallurgical and mechanical properties of weldment by optimizing the welding process and welding parameters. The aim of the manuscript is to explores the welding compatibility of TP347H (stabilized ASS) with solution annealed T91 (CEFS), by Auto TIG welding technique, such that carbon migration at the fusion line of SA213 T91 and sensitization in the heat affected zone of TP347H can be minimized. Influence of Auto TIG welding parameters on the mechanical, microstructure, and corrosion properties are studied and discussed. Carbon migration, mechanical and corrosion properties for lower (0.792 KJ/mm) and higher (1.124 KJ/mm) heat inputs weldments were compared. Investigation on mechanical properties test such as tensile, hardness, and root bend performed as per American Society of Mechanical Engineers (ASME) Section IX. Optical microscopy and Analytical Scanning Electron Microscope (SEM) coupled with Energy Dispersive Spectroscopy (EDS) have been performed to investigate carbon migration and sensitization behaviour. Sensitization susceptibility further validated by American Society for Testing and Materials (ASTM) A 262 Practice E. Investigation on tensile, hardness, and root bend tests revealed that mechanical properties for lower heat input weldment were superior. Restricted carbon migration due to optimized heat input improves mechanical properties and this was evidenced by satisfactory results of the bend test which showed no opening at the fusion line. A noticeable improvement in Ultimate Tensile Strength (UTS) 666 and 680N/mm2 (compared to 578 and 561N/mm2 for 1.124 KJ/mm heat input) and an acceptable hardness of 307 HV (compared to 399 HV for 1.124 KJ/mm heat input) were observed at T91 and weld metal interface. No fissures on bend surface and no Cr23C6 precipitation at grain boundary after performing ASTM A 262 Practice E and SEM-EDS respectively on heat affected zone (TP347H) of lower heat input weldment which shows higher resistance to intergranular corrosion (Sensitization). Optimizing the welding parameters and decreasing the heat input mitigate the carbon migration at T91 fusion zone and, meeting the requirements for satisfactory mechanical properties in materials used for power generation applications. Further optimized welding heat input have lesser Cr23C6 precipitation in the heat-affected zone of TP347H, making the heat affected zone less susceptible to sensitization. Heat input must be controlled ","PeriodicalId":516293,"journal":{"name":"Materials Science and Technology","volume":"14 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139535387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}