Materials Science and Technology最新文献

{"title":"Evolution in microstructure, properties of the laser cladding CoCrFeMoNi coatings at different annealing temperatures","authors":"N. Liu, Qichen Zhou, Meng Xu, M. Niu, Pengjie Zhou, Ping Guo","doi":"10.1080/02670836.2023.2225904","DOIUrl":"https://doi.org/10.1080/02670836.2023.2225904","url":null,"abstract":"Laser-cladding CoCrFeMoNi high-entropy alloy coating is composed of face-centred cubic, σ and µ phases. After annealing at 700 °C, many needle-like precipitates of the σ phase are found in the FCC solid solution, and the granular µ phase precipitated at the edge of the primary net-structural σ phase. After annealing at 800 °C, granular µ phases are found inside the primary σ phase. The friction coefficients of the coatings (as-cladded, as-annealed at 700 °C and 800 °C) decrease dramatically compared with the substrate of H13 steel. Obvious spheroidising of the σ phase at 900 °C leads to a decrease of hardness and an increase of friction coefficient. Furthermore, the CoCrFeMoNi high-entropy coatings show better corrosion resistance than H13 steel in 3.5 wt-% NaCl solution.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"4 1","pages":"2782 - 2791"},"PeriodicalIF":1.8,"publicationDate":"2023-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88979866","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}

{"title":"Effect of Cu/Sn additions on the precipitation and property in Al-Mg-Si alloys","authors":"Y. Weng, Qichen Sun, L. Ding, Jiahao Chen, Xiangxiang Cheng, Z. Jia, Manping Liu, Hua Zhao","doi":"10.1080/02670836.2023.2224994","DOIUrl":"https://doi.org/10.1080/02670836.2023.2224994","url":null,"abstract":"The effects of Cu and Sn additions on the precipitation hardening of Al-Mg-Si alloys were systematically studied by performance testing and microscopic characterisation. Sn addition can retard the onset of natural aging (NA), while after long-term NA, the NA hardening is enhanced. Although Cu and Sn can promote the NA hardening, the Cu and Sn combination addition results in NA hardness lower than the individual Cu addition. Compared with Sn, Cu addition is more efficient in promoting the artificial aging hardening of these alloys. Both of the Sn and Cu atoms can incorporate in the interior of the β′′ phase and produce disordered structure. The results are expected to provide new insight for designing new aluminium alloys for automotive application.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"1 1","pages":"2756 - 2766"},"PeriodicalIF":1.8,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89147017","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}

{"title":"Prior-β grain refinement of additive-manufactured Ti–6Al–4 V alloys via trace Si addition","authors":"Jian Gou, Jubin Gao, Yuxuan Feng, X. Bai, Dong Zhang, Yubo Wang, Zhengjun Liu","doi":"10.1080/02670836.2023.2223426","DOIUrl":"https://doi.org/10.1080/02670836.2023.2223426","url":null,"abstract":"Although Ti–6Al–4 V alloys have unique properties, their fabrication and treatment processes should be improved further to enhance their quality. Therefore, a novel method has been developed and applied to study the potential prior-β grain refinement of additive-manufactured Ti–6Al–4 V thin-wall components via trace Si addition. The microstructure and mechanical properties were analysed, and the results revealed that adding trace Si facilitates heterogeneous nucleation, contributing to the columnar-to-equiaxed transition of prior-β grains. The anisotropic percentages significantly decreased from 5.82% to 1.15% after trace Si addition. All the trace Si-added specimens exhibited dimples that are indicative of the ductile failure mode. Additionally, the possible phase-change process for the trace Si addition specimens was explored over several thermal cycles during the solidification process.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"267 1","pages":"2938 - 2944"},"PeriodicalIF":1.8,"publicationDate":"2023-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86725333","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}

{"title":"Mechanical and microstructure behaviour of WSC/SiC/Al composites synthesized with and without ultrasonic treatment","authors":"P. Pragathi, R. Elansezhian, P. Sundaram, A. Subramania, R. Prabakaran, S. C. Kim","doi":"10.1080/02670836.2023.2219125","DOIUrl":"https://doi.org/10.1080/02670836.2023.2219125","url":null,"abstract":"In this research, aluminium composites were fabricated using two alternative casting methods namely, traditional stir casting and ultrasonic-aided stir casting technique. The aluminium composites were manufactured by reinforcing them with three different concentrations of waste spent catalyst and silicon carbide (0.5, 1.0, and 1.5 wt-%), respectively. The microstructural and mechanical behaviour of aluminium composites synthesised using both methods were studied and compared. The microstructure of the aluminium composite obtained by the stir casting technique with ultrasonic treatment resulted in a homogeneous dispersion of reinforcement particles and grain size refinement. Moreover, the overall test results showed that the ultrasonic-aided stir-casting technique improves the microstructure and mechanical behaviour of the composites when compared to the traditional stir-casting approach.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"24 1","pages":"2743 - 2755"},"PeriodicalIF":1.8,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78078802","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}

{"title":"Microcrystalline cellulose/graphene oxide aerogel for adsorption of cationic dye from aqueous solution","authors":"M. Hasanpour","doi":"10.1080/02670836.2023.2216551","DOIUrl":"https://doi.org/10.1080/02670836.2023.2216551","url":null,"abstract":"Today, the increasing growth of industrial activities has caused the entry of large amounts of pollutants into water resources. Owing to the toxicity of these pollutants, their removal from water sources is essential. An adsorbent based on microcrystalline cellulose/graphene oxide (MCC/GO) aerogel was synthesised and its efficiency was investigated to remove methylene blue (MB) dye from aqueous solutions. Various factors such as concentration of GO in microcrystalline cellulose/graphene oxide (MCC/GO-x) aerogel, pH solution, adsorbent dosage, initial concentration of MB and contacting time were optimised on the adsorption capacity. The outcomes displayed that the maximum adsorption capacity could get to 645 mg g−1. The batch adsorption tests confirmed the pseudo-second-order and Langmuir isotherms as the best-fitted models to describe the adsorption of the adsorbent.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"20 1","pages":"2730 - 2742"},"PeriodicalIF":1.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84318040","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}

{"title":"Dissolution controlled grain growth in Nickel Alloy UDIMET 720Li","authors":"Manish Purushottam Meshram, D. Fabijanic, Rajkumar P. Singh, M. Barnett","doi":"10.1080/02670836.2023.2216543","DOIUrl":"https://doi.org/10.1080/02670836.2023.2216543","url":null,"abstract":"The present paper examines the mechanisms for simultaneous manipulation of grain size and γ′ dissolution leading to the microstructure that balance creep and fatigue properties in UDIMET 720Li. For sub (near) solvus heat treatments, grain growth and γ′ dissolution occur simultaneously. Grain size following heat treatment is determined largely by the primary γ′ particle dispersion, via Zener-Smith pinning. Remarkably, grain growth occurs only as a result of precipitate dissolution. The resulting grain size is dictated by a combination of initial particle dispersion in the as-received material and heat treatment temperature. It is likely to hold so long as the initial grain size is close to the Zener-Smith limit and where the kinetics of grain growth and dissolution share similar rates.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"27 1","pages":"2945 - 2949"},"PeriodicalIF":1.8,"publicationDate":"2023-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87044705","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}

{"title":"Solvo/hydrothermal upcycling of polyethylene plastic-waste into carbon-based nanocomposite for supercapacitor application","authors":"M. Kigozi, E. Tebandeke, John Baptist Kirabira, G. Kasozi","doi":"10.1080/02670836.2023.2215646","DOIUrl":"https://doi.org/10.1080/02670836.2023.2215646","url":null,"abstract":"One of the most worrying environmental issues affecting all forms of life, the economy, and natural ecosystems globally is the accumulation of polyethylene (PE) plastic garbage. Creating peaceful and environmentally friendly alternatives to conventional disposal techniques, like transforming plastic waste into cherished carbonaceous nanomaterials, is of utmost importance considering this threat. The current study carefully employed a cleaner upcycling technique to create carbon-based nanomaterials (CNMs) for supercapacitors. Using solvothermal/hydrothermal synthetic techniques, the PE waste was transformed into CNMs used in energy storage supercapacitors application. With an energy density of 21.6 W h kg−1 and a current density of 0.25 A g−1, the electrochemical test showed a specific capacitance of 155.5 F g−1. Additionally, the materials demonstrated 98.5% capacitance retention after 9000 cycles at a constant current density of 1.0 A g−1. Abbreviations: AC: activated carbon; CNM: carbon nanomaterials; CV: cyclic voltammetry; EC: electrochemical system; EDLC: electrical double layer capacitor; EIS: electrochemical impedance spectroscopy; FESEM: field emission scanning electron microscopy; FTIR: Fourier transform infrared; GCD: galvanostatic charge–discharge; HDPE: high-density polyethene; KOH: potassium hydroxide; LLDPE: linear low-density polyethene; Mn: manganese; PE: polyethene; Rct: charge transfer resistance; SSA: specific surface area; TEM: transmission electron microscopy; TGA: thermogravimetric analysis; UV–VIS: ultraviolet–visible spectroscopy; XRD: X-ray diffraction Highlights The article explored a low-temperature and non-emission upcycling method of polyethylene plastic waste into carbon-based nanomaterials (CNMs). CNMs were characterised for physical–chemical properties using different characterisation techniques. The carbon material was used with other materials like activated carbon and manganese to produce nanocomposites tested for electrical double layer capacitor energy storage and exhibited higher energy density.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"14 1","pages":"2707 - 2721"},"PeriodicalIF":1.8,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80143606","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}

{"title":"Effects of PMMT on microstructure and macrosegregation of large-sized 6061 alloy billet","authors":"Xinyu Bao, Yong-lin Ma, Ruiyin Huang, Yongzhen Liu, Yuanlu Tang, Shuqing Xing","doi":"10.1080/02670836.2023.2215645","DOIUrl":"https://doi.org/10.1080/02670836.2023.2215645","url":null,"abstract":"The pulsed magnetic field melt treatment (PMMT) was applied in the direct chill (DC) casting of 6061 alloy billets with a diameter of 430 mm. The results indicated that the billet solidification structure was refined and homogenised. The grain size was reduced by 20.4% in the billet centre. Meanwhile, the PMMT can reduce the addition of grain refiner. The negative macrosegregation in the billet centre was reduced significantly. This can be attributed to the melt structure being changed by the energy of the pulsed magnetic field, which leads to the temperature of the melt variation and increased nucleation rate. This study may offer a promising method for the high-quality large-sized 6061 alloy billets preparation with less grain refiner.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"32 1","pages":"2699 - 2706"},"PeriodicalIF":1.8,"publicationDate":"2023-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86332800","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}

{"title":"Microstructural evolution of aluminium in dissimilar A1050/S45C FSW joints by Zn interlayer","authors":"Mohamed Saleh, Y. Morisada, K. Ushioda, H. Fujii","doi":"10.1080/02670836.2023.2216547","DOIUrl":"https://doi.org/10.1080/02670836.2023.2216547","url":null,"abstract":"This study investigated the microstructural evolution of A1050 stir zones in dissimilar A1050/S45C friction stir-welded joints fabricated with 100- and 200-µm-thick Zn interlayers in addition to a third joint without any interlayer. The dissolved Zn in the A1050 stir zones contributed to its strengthening by forming Al–Zn solid solution. The addition of Zn refined the A1050 grains with many well-defined high-angle grain boundaries. The effect of Zn in the A1050 strengthening and grain refinement becomes apparent with a relatively high content of Zn. The possible precipitation of Zn-rich particles along the A1050 grain boundaries may also contribute to the A1050 stir zone strengthening by retarding the dislocation motion and enhancing the discontinuous dynamic recrystallisation.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"13 1","pages":"2722 - 2729"},"PeriodicalIF":1.8,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81204050","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}

{"title":"Refinement behaviour of microstructure in in-situ synthesised (TiB+TiC)/Ti6Al4V composites by laser melting deposition","authors":"H. Gu, Jie Zhang, Jianhua Sun, Guoqing Wu, Zhong-gang Sun","doi":"10.1080/02670836.2023.2213023","DOIUrl":"https://doi.org/10.1080/02670836.2023.2213023","url":null,"abstract":"Laser melting deposition (LMD) was used to stimulate the columnar to equiaxed transition (CET) of Ti6Al4V grains by adding a few of nano-B4C particles. The results showed that the grains were gradually refined with the increase of B4C content. When the B4C content is 3 wt-%, the titanium matrix composite material of B4C and Ti6Al4V reached CET. Ti6Al4V and B4C happened in-situ reaction to form TiB and TiC reinforcements at high temperature, which not only precipitate at grain boundaries to limit grain growth but also act as nucleation to accelerate the non-spontaneous nucleation of β grains to achieve fine grain strengthening. It reveals the epitaxial growth mechanism of β grains at the deposition bottom, the transition pattern and CET mechanism of the interface structure in successive deposition layers.","PeriodicalId":18232,"journal":{"name":"Materials Science and Technology","volume":"29 1 1","pages":"2662 - 2669"},"PeriodicalIF":1.8,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90066685","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}