Materials Research Express最新文献_第7页

Surface enhancement on TIG welded dissimilar Al-Mg alloy with ER5356 and scandium composites filler rod 使用 ER5356 和钪复合材料焊条进行 TIG 焊接的异种铝镁合金的表面强化效果

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-29 DOI: 10.1088/2053-1591/ad71a2

R Ashok Raj, C Chanakyan, D Antony Prabu, S Prabagaran

{"title":"Surface enhancement on TIG welded dissimilar Al-Mg alloy with ER5356 and scandium composites filler rod","authors":"R Ashok Raj, C Chanakyan, D Antony Prabu, S Prabagaran","doi":"10.1088/2053-1591/ad71a2","DOIUrl":"https://doi.org/10.1088/2053-1591/ad71a2","url":null,"abstract":"The effect of different process parameters on Tungsten Inert Gas (TIG) welded dissimilar aluminium magnesium alloy AA5083-H111 and AA5052-H32 by using ER5356 filler rod and scandium added ER5356 composites is investigated in this research. Extremely required in the automobile and aerospace industries, some defects like micro pores and weaken the fusion zone on the joint are identified with ER5356 filler rod. To resolve these defects, scandium added ER5356 composite filler rod is used to compose the TIG welded joints with free defects. There are three different TIG welding process parameters like Current (A), gas flow rate (L/min) and (0, 0.25 and 0.5 wt% of Scandium with ER5356 filler rod are used by Taguchi L9 method. The macrostructure, microstructure and mechanical properties of TIG welded joints are investigated on all the welded samples. To optimize the process parameter is more significant, therefore grey relational analysis used to optimize the parameters with identified mechanical properties tensile strength and micro hardness, respectively. Out of different process parameters, joint made with process parameter current at 190 A, gas flow rate 10 l min−1 and 0.50% scandium added ER5356 enhances the mechanical properties (264 MPa and 119 Hv) which is maximum than other scandium free ER5356 and 0.255 scandium filler rod and enhanced strength welded sample exhibited fine grain refinement on the weld seam. Due to added scandium on the welded zones, secondary phase particles are generated during SEM examination and the optimized samples were utilized for fractography test to exhibit the ductile nature in fractured area. The EDS mapping also shows the elemental distribution on the welded zones, the scandium plays the major role as a better reinforcement to improve intermetallic strength. Finally, the grey with ANOVA also proves that the scandium added joints achieves influencing process parameters.","PeriodicalId":18530,"journal":{"name":"Materials Research Express","volume":"12 12 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181242","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 on the properties and mechanisms of the glazed hollow bead thermal insulation mortar 釉面空心微珠保温砂浆的性能和机理研究

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-27 DOI: 10.1088/2053-1591/ad6959

Wangxing Zhan, Xiaohua Li, Zhi Zeng, Hao Yang, Zhao Feng, Fan Huang, Liubin Su

{"title":"Study on the properties and mechanisms of the glazed hollow bead thermal insulation mortar","authors":"Wangxing Zhan, Xiaohua Li, Zhi Zeng, Hao Yang, Zhao Feng, Fan Huang, Liubin Su","doi":"10.1088/2053-1591/ad6959","DOIUrl":"https://doi.org/10.1088/2053-1591/ad6959","url":null,"abstract":"With increasing concerns for energy conservation and environmental protection, research on glazed hollow bead thermal insulation mortar is of utmost importance. This type of mortar offers superior thermal insulation, leading to reduced energy consumption and emissions, in line with the current green building trends. This article aims to investigate the impact of varying component proportions on the parameters of thermal insulation mortar through an orthogonal experiment with four factors and three levels: glazed hollow bead, sepiolite, air-entraining agent, and cellulose ether. Additionally, a single-factor experiment is conducted to analyze the influence degree of water-solid ratio and these four factors. The experimental results are then verified through SEM (Scanning Electron Microscope) observation. The research findings indicate that glazed hollow beads have the most significant impact on thermal conductivity and compressive strength, while the air-entraining agent exerts the greatest influence on flexural strength. Specifically, when the content of glazed hollow bead is 2%, sepiolite 1%, air-entraining agent 0.6%, and cellulose ether 0.6%, the thermal conductivity can reach a minimum value of 0.0533W/(m·K). On the other hand, when the content of glazed hollow bead is 1%, sepiolite 2%, air-entraining agent 0.4%, and cellulose ether 0.6%, the compressive strength can achieve a maximum value of 2.4 MPa. These findings provide a solid foundation for further exploration into improving the performance of thermal insulation mortar.","PeriodicalId":18530,"journal":{"name":"Materials Research Express","volume":"48 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181240","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

Temperature induced A1 to B2 structural and magnetic transition in FeRh thin film 温度诱导的 FeRh 薄膜从 A1 到 B2 的结构和磁性转变

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-27 DOI: 10.1088/2053-1591/ad6f71

D G Merkel, M A Gracheva, G Z Radnóczi, G Hegedűs, D L Nagy, Z E Horváth, A Lengyel

引用次数: 0

The effect of chromium on the corrosive performance of novel high manganese steel frogs in a simulated industrial atmosphere 铬对新型高锰钢蛙鞋在模拟工业环境中腐蚀性能的影响

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-27 DOI: 10.1088/2053-1591/ad6ff4

Yonglin Li, Bo Lv, Yuefeng Wang, Zhihui Zhao, Meitong Lin

{"title":"The effect of chromium on the corrosive performance of novel high manganese steel frogs in a simulated industrial atmosphere","authors":"Yonglin Li, Bo Lv, Yuefeng Wang, Zhihui Zhao, Meitong Lin","doi":"10.1088/2053-1591/ad6ff4","DOIUrl":"https://doi.org/10.1088/2053-1591/ad6ff4","url":null,"abstract":"The corrosion behavior of three novel high manganese steel frogs with different Cr contents in a simulated industrial corrosive atmospheric environment is studied through the corrosion weight gain, x-ray diffraction (XRD), scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS), and electrochemical testing. The results indicate that the content of Cr in the steel affects the phase composition, density, and electrochemical stability of the rust layer. For instance, as the Cr content increases, the content of the amorphous phase in the rust layer continuously increases while that of <italic toggle=\"yes\">γ</italic>-FeOOH decreases, leading to enhanced density and electrochemical stability of the rust layer. The study reveals that Cr exists in the rust layer in the form of Cr2O3 and Cr(OH)3, providing nucleation cores to nanoscale colloidal rust particles. Consequently, a higher Cr content leads to more nucleation cores, which improves the density of the rust layer and enhances the corrosion resistance of the novel high manganese steel frogs in industrial corrosive atmospheric environments.","PeriodicalId":18530,"journal":{"name":"Materials Research Express","volume":"22 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181260","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

A combinatorial approach to validate the surface plasmon resonance (SPR) biosensor response 验证表面等离子体共振 (SPR) 生物传感器响应的组合方法

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-27 DOI: 10.1088/2053-1591/ad6f70

Aditi Chopra, Girish C Mohanta, Sudipta S Pal

{"title":"A combinatorial approach to validate the surface plasmon resonance (SPR) biosensor response","authors":"Aditi Chopra, Girish C Mohanta, Sudipta S Pal","doi":"10.1088/2053-1591/ad6f70","DOIUrl":"https://doi.org/10.1088/2053-1591/ad6f70","url":null,"abstract":"One of the fundamental challenges of working with surface plasmon resonance (SPR) biosensors is their inherent lack of specificity. Being very sensitive to minute refractive index (RI) changes in their surrounding medium, SPR biosensors are highly susceptible to variations in pH, temperature, and buffer composition. Therefore, it is often necessary to include an additional validation step downstream to SPR biosensing, particularly for clinical analysis. In this proof-of-study work, we have tried to evaluate the utility of surface-enhanced Raman scattering (SERS) tags as secondary labels for validating SPR biosensor response. Accordingly, a Fibre-optic SPR (FO-SPR) biosensor set-up was fabricated by immobilizing anti-BSA antibodies on the sensor platform for capturing and sensing biotinylated-BSA as a model analyte. Subsequently, the bound analyte and the concomitant shift in SPR response were validated by employing streptavidin-functionalized SERS tags. Intriguingly, apart from validation of the SPR response, the SERS tags also significantly improved the sensitivity of the SPR response and provided semi-quantitative information on the bound analyte. Although utilizing SERS tags undermines the label-free tag of SPR biosensors, the huge improvement in sensitivity and specificity of the sensor makes it suitable for clinical analysis. Furthermore, SERS measurements with a portable Raman spectrometer utilized in this study further highlight the potential of this approach for achieving point-of-care (POC) sensing.","PeriodicalId":18530,"journal":{"name":"Materials Research Express","volume":"11 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181243","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

Experimental study on the effects of composite reinforcement of ionic soil stabilizer and sand on bentonite 离子土壤稳定剂与砂的复合加固对膨润土影响的实验研究

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-27 DOI: 10.1088/2053-1591/ad6ff3

Fenghua Wang, Yuefeng Yuan, Meiying Hou, Ailin Wang, Yani Yang, Qian Xiong

引用次数: 0

Stress corrosion cracking behaviors of carbon steel in liquid ammonia 碳钢在液氨中的应力腐蚀开裂行为

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-27 DOI: 10.1088/2053-1591/ad6ef1

Zhang Chao, Huang Huan, Xiao Li, Yang Fan, Zhang Yuqi, Liu Jie

引用次数: 0

Comparative study of electrogas and shielded metal arc welding processes on steel A537 welded joints 钢 A537 焊点的气体保护焊和金属保护弧焊工艺比较研究

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-26 DOI: 10.1088/2053-1591/ad6b78

Mahmoud Abbas, Essam Ahmed, Mohammad Hassan, Hamed Ahmed Abdel-Aleem

{"title":"Comparative study of electrogas and shielded metal arc welding processes on steel A537 welded joints","authors":"Mahmoud Abbas, Essam Ahmed, Mohammad Hassan, Hamed Ahmed Abdel-Aleem","doi":"10.1088/2053-1591/ad6b78","DOIUrl":"https://doi.org/10.1088/2053-1591/ad6b78","url":null,"abstract":"In this research, the electro-gas welding process was compared with a shielded metal arc welding process for welding steel A573 from a mechanical properties point of view. Visual and radiographic inspections confirmed the soundness of weldments produced by electro-gas welding and shielded metal arc welding techniques. Various assessments were performed, including hardness, tensile strength, V-notch impact toughness, macrostructure, microstructure, and electrochemical tests. The mechanical properties of the two welding processes were closely matched, with an average tensile strength of 590 MPa for electro-gas welding and 585 MPa for shielded metal arc welding. Furthermore, the influence of welding variables, such as groove design and heat input, on the welded joints’ quality, mechanical properties, and electrochemical behavior was thoroughly examined. Dilution estimates, particularly for the electro-gas welding process, were around 35%, and a significant similarity was observed between the chemical composition determined through dilution calculations and that obtained from chemical analysis using an arc spark emission spectrometer. Notably, the electro-gas welding process demonstrated exceptional productivity, surpassing the shielded metal arc welding process by more than elevenfold. The optimum welding parameters for the electro-gas welding process were identified to achieve superior mechanical properties, low corrosion rates, and reduced consumption of the welding electrodes. This included adopting a single V type and groove angle of 30° instead of 60°, resulting in a 23% reduction in economic costs. Selecting an appropriate heat input within the range of 12 to 14 kJ/mm further contributed to enhancing overall welding efficiency.","PeriodicalId":18530,"journal":{"name":"Materials Research Express","volume":"49 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181261","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

Investigation of dynamic characteristics and fatigue life prediction of Pb free solder material under random vibration 无铅焊接材料在随机振动下的动态特性和疲劳寿命预测研究

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-23 DOI: 10.1088/2053-1591/ad6eef

Saravanakumar K, S Saravanan, N Muthuram

{"title":"Investigation of dynamic characteristics and fatigue life prediction of Pb free solder material under random vibration","authors":"Saravanakumar K, S Saravanan, N Muthuram","doi":"10.1088/2053-1591/ad6eef","DOIUrl":"https://doi.org/10.1088/2053-1591/ad6eef","url":null,"abstract":"Electronic packages are employed in diverse industries, including automotive, aerospace, and defense. However, their susceptibility to failure arises from exposure to uncontrolled operating conditions, particularly vibrations.Therefore, an investigation has been conducted to explore the effect of vibration in fatigue life of SAC305 lead free solder material employed in Printed Circuit Board (PCB) assembly with ball grid array (BGA) 144 electronic package. Finite Element Analysis (FEA) of a printed circuit board with BGA 144 electronic package was conducted to find their dynamic characterisics like natural frequencies and their mode shapes. Experiments were conducted to validate the numerically developed model, where first, second and third modes shapes from FEA and experimental results were compared. In addition, random vibration analysis was performed using numerical simulation where individual solder balls were analysed for stress distribution and experimentswere conducted on specially fabricated PCBs using electro dynamic shaker for validation. Analysis shows that the failure was prominent at the solder balls located at the corner of the package. Further, Minor’s rule was used to estimate the fatigue life of the Pb free solder material in BGA 144 package.","PeriodicalId":18530,"journal":{"name":"Materials Research Express","volume":"26 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181262","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

Effects of cold-bonded artificial aggregate properties on the behaviour of concrete 冷粘合人工骨料特性对混凝土性能的影响

IF 2.3 4区材料科学

Materials Research Express Pub Date : 2024-08-23 DOI: 10.1088/2053-1591/ad6ef2

Gopal Bharamappa Bekkeri, Kiran K Shetty, Gopinatha Nayak

{"title":"Effects of cold-bonded artificial aggregate properties on the behaviour of concrete","authors":"Gopal Bharamappa Bekkeri, Kiran K Shetty, Gopinatha Nayak","doi":"10.1088/2053-1591/ad6ef2","DOIUrl":"https://doi.org/10.1088/2053-1591/ad6ef2","url":null,"abstract":"The study investigates the use of artificial aggregates (AAs), specifically manufactured from ground granulated blast furnace slag (GGBFS) and ordinary Portland cement (OPC), to mitigate environmental harm caused by illegal quarrying due to the scarcity of natural aggregates (NAs). A cold-bonded pelletization technique was employed to produce five types of AAs with varying proportions of GGBFS & OPC as 82.5:17.5, 85:15, 87.5:12.5, 90:10, 95:5. The AAs with maximum OPC content exhibited a density of 1298 kg m−3, water absorption of 4.8%, and crushing and impact values of 28.6% and 26.3%, respectively. The impact of these AAs on concrete properties was assessed, revealing that AAs facilitated the production of workable concrete with low-density ranges between 1700–2337 kg m−3. Despite a decrease in concrete strength with higher AAs content, structural requirements were met, demonstrating AAs’ potential to effectively substitute natural coarse aggregates (NCAs). The concrete microstructure confirmed the formation of a strong interfacial transition zone (ITZ) and strength-developing cement-hydrated products. This research underscores the scientific contribution of AAs to address aggregate scarcity sustainably and recommends its application in structural elements by experimental validation.","PeriodicalId":18530,"journal":{"name":"Materials Research Express","volume":"10 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142181263","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