Materials Today Communications最新文献_第10页

Multi-objective optimization of seawater mixing in cement-based materials with supplementary cementitious materials using response surface methodology 利用响应面方法多目标优化水泥基材料中的海水混合与胶凝补充材料

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-09-03 DOI: 10.1016/j.mtcomm.2024.110297

Jixi Chen, Jinqing Jia, Mengyu Zhu

{"title":"Multi-objective optimization of seawater mixing in cement-based materials with supplementary cementitious materials using response surface methodology","authors":"Jixi Chen, Jinqing Jia, Mengyu Zhu","doi":"10.1016/j.mtcomm.2024.110297","DOIUrl":"https://doi.org/10.1016/j.mtcomm.2024.110297","url":null,"abstract":"Seawater instead of freshwater to produce concrete is an effective measure to save freshwater resources. However, the presence of harmful ions in seawater restricts its broader application. The incorporation of supplementary cementitious materials (SCMs) has the potential to significantly mitigate these adverse effects. Consequently, there is a growing interest in understanding the mechanisms by which SCMs function in seawater-mixed cementitious systems. In this study, a quadratic polynomial prediction model with the mechanical properties and dry shrinkage of the composite matrix as the response target was analyzed by the response surface method (RSM). Tests and analytical techniques elucidated the effects of metakaolin (MK) and ground granulated blast-furnace slag (GGBS) on the hydration process of the pastes after seawater mixing. The results revealed that the compressive strength and dry shrinkage were influenced by single-factor or multi-factor interactions. The optimal mix design (MK=20.2 % and GGBS=10.0 %) was experimentally validated, showing an absolute error of 1.5 %. The microstructural analysis indicated that MK and GGBS expedited essential pozzolanic reactions. Enhanced strength in mixtures before 3 d was attributed to cation exchange and initial flocculation. In the 28 d specimens, the increase in strength was related to the growth of Friedel’s salt crystals and C-(A)-S-H gels. Due to the presence of the C-(A)-S-H gels and AFm phases, chloride ions were efficiently immobilized, and the shrinkage of the matrix was reduced.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"2020 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Enhancing mechanical and thermal properties of polyvinyl alcohol/curdlan composite hydrogels and aerogels via freeze-casting technique 通过冷冻铸造技术提高聚乙烯醇/凝胶复合水凝胶和气凝胶的机械和热性能

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-09-02 DOI: 10.1016/j.mtcomm.2024.110287

Congli Cui, Dong Li, Li-jun Wang, Yong Wang

{"title":"Enhancing mechanical and thermal properties of polyvinyl alcohol/curdlan composite hydrogels and aerogels via freeze-casting technique","authors":"Congli Cui, Dong Li, Li-jun Wang, Yong Wang","doi":"10.1016/j.mtcomm.2024.110287","DOIUrl":"https://doi.org/10.1016/j.mtcomm.2024.110287","url":null,"abstract":"This study introduces a novel approach to fabricating polyvinyl alcohol (PVA)/curdlan (CURD) composite aerogels by employing the freeze-casting technique to achieve exceptional mechanical and thermal properties. Our research demonstrated that the formation of dual-network structure that combines the mechanical strength of PVA with the thermal stability of CURD. Scanning electron microscopy revealed a unique honeycomb-like cross-sectional morphology in the PVA/CURD aerogels. Notably, the PVA/CURD composite hydrogel demonstrated consistent compressive stress performance even after 50 compression cycles and exhibited minimal swelling (only 4 %) when immersed in distilled water for 24 h. Furthermore, the aerogels exhibited varying swelling ratios in different pH environments, with a significant increase observed in acidic conditions. Thermal analysis confirmed the enhanced thermal stability of the composite aerogels, attributed to the incorporation of CURD. These findings suggest that PVA/CURD composite aerogels have promising applications in fields that require materials with robust mechanical and thermal endurance.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"11 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193563","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 novel high entropy composite interlayer for diffusion bonding of TC4 titanium alloy to 316L stainless steel 用于 TC4 钛合金与 316L 不锈钢扩散粘接的新型高熵复合中间膜

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-09-02 DOI: 10.1016/j.mtcomm.2024.110291

Yinchen Wang, Peng Li, Chenhao Zhao, Zhijie Ding, Chao Li, Yue Yao, Honggang Dong

{"title":"A novel high entropy composite interlayer for diffusion bonding of TC4 titanium alloy to 316L stainless steel","authors":"Yinchen Wang, Peng Li, Chenhao Zhao, Zhijie Ding, Chao Li, Yue Yao, Honggang Dong","doi":"10.1016/j.mtcomm.2024.110291","DOIUrl":"https://doi.org/10.1016/j.mtcomm.2024.110291","url":null,"abstract":"Titanium/steel hybrid structure exhibit broad prospects in the nuclear industry and aerospace applications. Achieving high-performance titanium/steel bonding is crucial. Herein, the novel AlCoCrNiCuAg/Cu high entropy composite interlayer was designed for vacuum diffusion bonding of TC4 alloy to 316L stainless steel. The effects of bonding temperature, holding time and assembly sequence on the interfacial microstructure and mechanical properties were investigated, and the fracture behaviors were researched. Typical microstructure of the joint bonded at 1010 °C for 90 min via AlCoCrNiCuAg/Cu sequence was TC4/β-Ti/β-Ti+TiFe/TiFe+χ+σ/α-Fe+χ+σ/316L. With bonding temperature increased, due to the dispersed distribution of the Cu phase in the Ti-Fe phases, the highest shear strength of 222.8 MPa was achieved at 1010 °C/90 min. The cleavage characteristics were confirmed in the fracture surfaces, suggesting the brittle fracture. The main cracks were located at the junction of the TiFe+χ+σ and the β-Ti+TiFe layers, further confirmed that the interface appeared immense strain, accelerating the joint fracture.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"25 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 aging-hardening behavior of short-time in high pressure die casting AlSi9MgMnZn alloy 高压压铸 AlSi9MgMnZn 合金中的短时时效硬化行为

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-09-02 DOI: 10.1016/j.mtcomm.2024.110311

Minghe Zhang, Dongtao Wang, Zibin Wu, Xiaozu Zhang, Fuan Hua, Bo Zhang, Lai Chen, Xiaojun Zhou, Xiaocun Chen, Hiromi Nagaumi

{"title":"The aging-hardening behavior of short-time in high pressure die casting AlSi9MgMnZn alloy","authors":"Minghe Zhang, Dongtao Wang, Zibin Wu, Xiaozu Zhang, Fuan Hua, Bo Zhang, Lai Chen, Xiaojun Zhou, Xiaocun Chen, Hiromi Nagaumi","doi":"10.1016/j.mtcomm.2024.110311","DOIUrl":"https://doi.org/10.1016/j.mtcomm.2024.110311","url":null,"abstract":"Short-time aging is an effective industrial technique for enhancing the mechanical properties of high pressure die cast (HPDC) aluminum alloy components. However, the evolution of precipitation behavior during short-time aging of HPDC alloys remains unclear. In this study, the short-time aging behavior of HPDC AlSi9MgMnZn alloy was investigated. The results show that the AlSi9MgMnZn alloy exhibits effective aging-hardening, with an increment in hardness of approximately 30 HV through the optimal short-time aging treatment (aged at 180 °C for 120 minutes). Higher aging temperatures led to reduced peak hardness and rapid over-aging above 220 °C. The microstructure observation indicates that the peak short-time aging promotes the simultaneous precipitation of β″ precipitates, GP zones and nano Si phases. The contribution of different strengthening mechanisms to hardness was estimated, implying that the coexistence of β″ precipitates and GP zones can provide a positive contribution to aging-hardening during short-time aging. Moreover, as the aging temperature increases, the appearance of β′ precipitates reduces the strengthening effect, leading to a decrease in hardness.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"42 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Strong yet ductile (FeCoNi)86Al7Ti7 high-entropy alloy via laser powder bed fusion 通过激光粉末床熔融技术获得强度高、韧性好的 (FeCoNi)86Al7Ti7 高熵合金

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-09-02 DOI: 10.1016/j.mtcomm.2024.110285

Shiliang Wu, Haitao Wang, Sujuan Wang, Wenshuai Liu

{"title":"Strong yet ductile (FeCoNi)86Al7Ti7 high-entropy alloy via laser powder bed fusion","authors":"Shiliang Wu, Haitao Wang, Sujuan Wang, Wenshuai Liu","doi":"10.1016/j.mtcomm.2024.110285","DOIUrl":"https://doi.org/10.1016/j.mtcomm.2024.110285","url":null,"abstract":"High entropy alloys (HEAs) are renowned for their outstanding mechanical properties and thermal stability, yet their complex compositions pose significant processing challenges. This study introduces an innovative approach using Laser Powder Bed Fusion (LPBF) to directly fabricate the (FeCoNi)AlTi HEA, bypassing the extensive post-processing typically required. Unlike Vacuum Arc Melting (VAM), the LPBF method produces a refined microstructure with fine cellular substructures, elemental segregation, and L2 phase nano-precipitates. These features contribute to significantly improved mechanical performance, with the LPBF-produced alloy achieving an ultimate tensile strength of 1221.6 MPa and a tensile strain of 32.6 %, compared to the VAM-produced HEA, which exhibits an ultimate tensile strength of 972.5 MPa and a tensile strain of 8.8 %. This work demonstrates that LPBF can not only achieve but enhance the properties of HEAs, offering a streamlined and effective alternative to conventional methods. The findings underscore the transformative potential of LPBF in shaping high-performance HEAs, eliminating the need for additional treatments, and opening new avenues for advanced material design.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"62 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 welding method and heat treatment on the fracture toughness of low alloy steel deposited metal 焊接方法和热处理对低合金钢熔敷金属断裂韧性的影响

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-09-02 DOI: 10.1016/j.mtcomm.2024.110304

Jingping Ma, Rui Cao, Xin Zhou, Fei Yang, Yuting Zhu, Yi Zhang, Kejin Zhang

引用次数: 0

Theoretical prediction of two-dimensional metallic AM2B8 (AM = K, Rb, Cs) as anode materials for Na-ion batteries 二维金属 AM2B8（AM = K、Rb、Cs）作为纳离子电池负极材料的理论预测

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-09-02 DOI: 10.1016/j.mtcomm.2024.110284

Siqi Liu, Jinyan Chen, Yuhan Wang, Jianhua Hou, Qian Duan

引用次数: 0

First-principles study of the C2H4 adsorption on the small Ag-Cu clusters 小型银铜团簇对 C2H4 吸附的第一性原理研究

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-08-31 DOI: 10.1016/j.mtcomm.2024.110279

Weiyin Li, Ruiyong Shang, Hao Feng

引用次数: 0

The impact of ultrasonic shock surface treatment technology on the microstructure, mechanical and corrosion properties of FeCrMnCuNiSi high-entropy alloy coating via TIG arc melting 超声波震荡表面处理技术对 TIG 电弧熔炼 FeCrMnCuNiSi 高熵合金镀层的显微组织、力学和腐蚀性能的影响

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-08-31 DOI: 10.1016/j.mtcomm.2024.110282

Shanping Gao, Yuexiang Du, Mengqi Cong, Yiliang He, Weining Lei

{"title":"The impact of ultrasonic shock surface treatment technology on the microstructure, mechanical and corrosion properties of FeCrMnCuNiSi high-entropy alloy coating via TIG arc melting","authors":"Shanping Gao, Yuexiang Du, Mengqi Cong, Yiliang He, Weining Lei","doi":"10.1016/j.mtcomm.2024.110282","DOIUrl":"https://doi.org/10.1016/j.mtcomm.2024.110282","url":null,"abstract":"The effects of ultrasonic impact treatment on microstructure, mechanical and properties of high-entropy alloy (HEA) coatings prepared via TIG arc melting. The experimental results indicate that ultrasonic impact treatment eliminates the aggregation or segregation of metal elements within the high-entropy alloy coating. The acoustic stream's stirring effect results in a more uniform distribution of metal elements between dendrites and interdendritic regions. Additionally, ultrasonic impact treatment also strengthens the diffraction peak of the face-centered cubic (FCC) phase, which intensifies the distortion trend in the high-entropy alloy.The average grain size of the high-entropy alloy coating was reduced by approximately 55 % (from 253 μm to 112 μm), the average microhardness increased from 535 HV to 612 HV and the wear resistance improved by about 40 %. Additionally, the longitudinal tensile strength of the coating was also enhanced. The corrosion potential of the coating in a 3.5 wt% NaCl solution increased from −507 mV to −392 mV. The improvement in corrosion resistance of was about 23 %, the corrosion type mechanism changed from intergranular corrosion to uniform corrosion. These findings suggest that ultrasonic impact treatment technology has significant research value and promising application prospects, particularly in terms of improving the mechanical properties and corrosion resistance of metals during the forming process.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"151 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193568","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 ZnIn2S4/CeO2 S-scheme heterojuntion for the enhanced removal of tetracycline under visible light irradiation 制备 ZnIn2S4/CeO2 S 型异质共轭物，用于在可见光照射下增强四环素的去除效果

IF 3.8 3区材料科学

Materials Today Communications Pub Date : 2024-08-31 DOI: 10.1016/j.mtcomm.2024.110280

Zhanying Ma, Yang Liu, Wenhui Chen, Jiarui Yang, Lingjuan Deng, Caihua Zhou, Guang Fan, Yuxing Yang, Yangqing He

{"title":"Fabrication of ZnIn2S4/CeO2 S-scheme heterojuntion for the enhanced removal of tetracycline under visible light irradiation","authors":"Zhanying Ma, Yang Liu, Wenhui Chen, Jiarui Yang, Lingjuan Deng, Caihua Zhou, Guang Fan, Yuxing Yang, Yangqing He","doi":"10.1016/j.mtcomm.2024.110280","DOIUrl":"https://doi.org/10.1016/j.mtcomm.2024.110280","url":null,"abstract":"A series of S-scheme ZnInS/-CeO heterojunction were designed and fabricated through precipitation and hydrothermal method. XRD, SEM, TEM, EDX, XPS, UV–vis DRS and adsorption-photocatalytic techniques were employed to investigate its crystal phase structure, morphology, size, elemental composition, photo-response property and elimination ability for tetracycline. XRD analysis revealed CeO and ZnInS in ZnInS/-CeO sample presented cubic and hexagonal phase structure, respectively. SEM and TEM images indicated that CeO particles with irregular-shaped of around 20 nm were attached on the smooth surface of ZnInS microparticles with 4 μm. All the as-synthesized ZnInS/-CeO samples could harvest more visible-light and the absorption edges were red-shifted in comparison with pure CeO. ZnInS/0.3-CeO sample exhibited remarkably enhanced photocatalytic performance and its removal efficiency for tetracycline reached 87.29 % within 100 min. The detailed experimental and DFT calculation indicated that the enhanced photocatalytic property was mainly ascribed to the synergistic effect of wide light-response range, suitable band position and successful fabrication of S-scheme heterostructure, which was in favor of rapid transfer and available separation of photo-generated e/h pairs. The scavenger experiments and the ESR data revealed that the •O and h active species played the dominant role in tetracycline removal over ZnInS/0.3-CeO system. In addition, the as-synthesized ZnInS/0.3-CeO samples had excellent stability and the removal efficiency still reached 70.73 % after being repeatedly used for 4 times. Furthermore, the possible enhanced photocatalytic mechanism over ZnInS/-CeO was proposed to get a better understanding of photocatalytic process. This work provided the guidance to fabricate CeO-based heterojunction with promising prospect for the efficient elimination of antibiotic residues from wastewater.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"61 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142193571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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