Materials最新文献_第2页

Low-Velocity Impact Behaviour of Titanium-Based Carbon-Fibre/Epoxy Laminate. 钛基碳纤/环氧树脂层压板的低速冲击行为

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-04 DOI: 10.3390/ma17215380

Jing Sun, Weilin Chen, Hongjie Luo, Xingfang Xie, Jingzhou Zhang, Chao Ding

引用次数: 0

Study on Welding Characteristics and Parameters of Gas Metal Arc Welding for A516 Grade 70 Steel with ER70S-6 and ER308LSi Filler Materials. 使用 ER70S-6 和 ER308LSi 填充材料对 A516 70 级钢进行气体金属弧焊的焊接特性和参数研究。

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-04 DOI: 10.3390/ma17215391

Kahwai Chong, Ervina Efzan Mhd Noor, Amalina Amir, Mirza Farrukh Baig

{"title":"Study on Welding Characteristics and Parameters of Gas Metal Arc Welding for A516 Grade 70 Steel with ER70S-6 and ER308LSi Filler Materials.","authors":"Kahwai Chong, Ervina Efzan Mhd Noor, Amalina Amir, Mirza Farrukh Baig","doi":"10.3390/ma17215391","DOIUrl":"10.3390/ma17215391","url":null,"abstract":"Welding is a crucial process in joining metals, especially in the fabrication industry. Thisresearch aimed to investigate the effects of using two different filler materials, ER70S-6 and ER308LSi, with nine combinations of wire feeder speed (WFS) and shielding gas flow rate (GFR), on weld joints. The study focused on the weld quality and material properties of Gas Metal Arc Welded (GMAW) butt joints of ASTM A516 G70 plates, characterized through visual inspection, liquid penetrant testing, tensile testing, hardness testing, and optical microscopy. Results indicated that the highest ultimate tensile strength and hardness were achieved at 4 m/min WFS and 15 L/min GFR with ER70S-6, and 5 m/min WFS and 20 L/min GFR with ER308LSi. The specimens welded with ER308LSi demonstrated superior mechanical properties compared to those welded with ER70S-6. Additionally, the study revealed the influence of microstructural changes from the base metal (BM) to the heat-affected zone (HAZ) and fusion zone (FZ), with finer and more compact grain structures contributing to higher hardness values. These findings underscore the importance of selecting appropriate filler materials, WFS, and GFR to achieve the desired weld quality and material properties for A516 G70 low-carbon steel welded joints.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"17 21","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547951/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on Springback Behavior in Hydroforming of Micro Channels for a Metal Bipolar Plate. 金属双极板微通道水压成型中的回弹行为研究

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-04 DOI: 10.3390/ma17215386

Zonghui Su, Wenlong Xie, Yong Xu, Changsheng Li, Liangliang Xia, Baocheng Yang, Mingyu Gao, Hongwu Song, Shihong Zhang

{"title":"Study on Springback Behavior in Hydroforming of Micro Channels for a Metal Bipolar Plate.","authors":"Zonghui Su, Wenlong Xie, Yong Xu, Changsheng Li, Liangliang Xia, Baocheng Yang, Mingyu Gao, Hongwu Song, Shihong Zhang","doi":"10.3390/ma17215386","DOIUrl":"https://doi.org/10.3390/ma17215386","url":null,"abstract":"Bipolar plates are one of the most important components of proton exchange membrane fuel cells. With the miniaturization of bipolar plate flow channel sizes and the increasing demand for precision, springback has become a key focus of research in the bipolar plate forming process. In this paper, the hydroforming process for 316L stainless steel bipolar plates was studied, and an FEM model was built to examine the stress and strain at various locations on the longitudinal section of the plate. Modeling accuracy was validated by the comparison of experimental profile and thickness distribution. The effects of forming pressure and grain size on springback behavior are discussed. The results show that with increasing forming pressure, the springback value decreases initially, followed by an increase, but then again decreases. When the forming pressure is 80 MPa-100 MPa, the deformation of the lower element of the upper rounded corner is not uniform with more elastic regions, and the springback is positively correlated with forming pressure. The springback distribution pattern on the cross-section of the bipolar plate changes from a normal distribution to a distribution of \"M\" shape with increased pressure. The larger the grain size, the lower the yield strength elastic proportion, resulting in a decrease in springback of the sheet. The maximum amount of springback of the bipolar plate is 3.1 μm when the grain size is 60.7 μm. The research results provide a reference for improving the forming quality of metal bipolar plates with different flow channel shapes.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"17 21","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547898/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142635983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of Reclaimed Water on the Visual Quality of Automotive Coating. 再生水对汽车涂料视觉质量的影响

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-04 DOI: 10.3390/ma17215382

Piotr Woźniak, Marek Gryta

引用次数: 0

In Vivo and In Vitro Response to a Regenerative Dental Scaffold. 体内和体外对再生牙支架的反应

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-04 DOI: 10.3390/ma17215384

Maree L Gould, Xiaoxuan Deng, Karl Lyons, Azam Ali

{"title":"In Vivo and In Vitro Response to a Regenerative Dental Scaffold.","authors":"Maree L Gould, Xiaoxuan Deng, Karl Lyons, Azam Ali","doi":"10.3390/ma17215384","DOIUrl":"10.3390/ma17215384","url":null,"abstract":"As dental pulp contains the stem cells necessary for regeneration, the tooth should hold the intrinsic capacity for self-repair. A triphasic hybrid dental biocomposite (3HB) composed of biocompatible biopolymers to provide strength, antibacterial properties and protein-based cell support could provide a conducive microenvironment for the regeneration of dental structures. 3HB was incorporated into Mineral Trioxide Aggregate (ProRoot MTA) to construct a malleable injectable implant. Human tooth pulp cells (hDPCs) significantly increased proliferation in the presence of 3HB+MTA compared to 3HB or MTA alone. Cell viability decreased with MTA alone but increased with 3HB and 3HB+MTA. 3HB+MTA was implanted into the residual tooth of drilled Wistar rat M2 molars for up to 45 days. Stereological analysis from micro-CT images showed the volume of the tooth remaining. Histologically, regenerative pulpal architecture was seen invading 3HB. A continuous odontoblastic profile lined a deposit of dentin-like material suggesting reparative dentinogenesis. Overall, no infection or encapsulation was seen. Immunohistochemically, odontoblasts were seen along the margins of the wounded tooth undergoing repair. Mesenchymal cells (MSCs) were seen at the base of the drilled tooth and by 21 days had translocated into the implant itself. Cells stimulating remineralization were highly expressed in the tooth undergoing repair. CD146-positive MSCs were seen in the center of the implant, possibly stimulating remineralization. In conclusion, behavior of 3HB+ in vitro and in vivo provided a promising start as 3HB+MTA may serve as a viable regenerative scaffold for pulp regeneration; however, this should be further studied before clinical use can be considered.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"17 21","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547789/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Review of the Anti-Candida albicans Activity and Physical Properties of Soft Lining Materials Modified with Polyene Antibiotics, Azole Drugs, and Chlorohexidine Salts. 用多烯抗生素、唑类药物和氯己定盐改性的软衬垫材料的抗白色念珠菌活性和物理性质综述

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-04 DOI: 10.3390/ma17215383

Izabela Barszczewska-Rybarek, Patrycja Kula, Grzegorz Chladek

引用次数: 0

A Review on Friction Stir Welding of Copper: Tool Geometry, Process Parameters, and Joint Properties. 铜摩擦搅拌焊接综述：工具几何形状、工艺参数和接头性能。

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-03 DOI: 10.3390/ma17215374

Răducu Nicolae Bulacu, Matthieu Dhondt, Younes Demmouche, Claudiu Bădulescu, Eduard Laurențiu Nițu, Daniela Monica Iordache

{"title":"A Review on Friction Stir Welding of Copper: Tool Geometry, Process Parameters, and Joint Properties.","authors":"Răducu Nicolae Bulacu, Matthieu Dhondt, Younes Demmouche, Claudiu Bădulescu, Eduard Laurențiu Nițu, Daniela Monica Iordache","doi":"10.3390/ma17215374","DOIUrl":"10.3390/ma17215374","url":null,"abstract":"This paper comprehensively reviews friction stir welding (FSW) as applied to copper and its alloys. FSW is a solid-state joining process that offers significant advantages over traditional fusion welding methods, particularly for materials like copper that are difficult to weld conventionally due to their high thermal conductivity and oxidation issues. Over time, the FSW process has been developed for different industries. Copper structures joined through FSW are utilized for nuclear waste storage, electrical connectors, chemical and petrochemical storage, refrigeration systems, heat exchangers, and the aerospace industry. This covers recent advancements in FSW technology, the geometry of the tools used, the process parameters, and the microstructural characteristics and mechanical properties of the joints. It examines the shapes, sizes, and materials of the tools used for welding copper and its alloys, along with process parameters such as rotational speed and traverse speed, and their influence on the quality of the joints. Additionally, the paper presents syntheses of previously published results, highlighting the values of parameters that indicate the quality of the welds, including grain size, microhardness, mechanical strength, and elongation. The challenges and potential solutions in applying FSW to copper are also discussed, providing a starting point for future research and industrial applications.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"17 21","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547377/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coupling CALPHAD Method and Entropy-Driven Design for the Development of an Advanced Lightweight High-Temperature Al-Ti-Ta Alloy. 将 CALPHAD 方法与熵驱动设计相结合，开发先进的轻质高温 Al-Ti-Ta 合金。

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-03 DOI: 10.3390/ma17215373

Gourav Mundhra, Jien-Wei Yeh, B S Murty

{"title":"Coupling CALPHAD Method and Entropy-Driven Design for the Development of an Advanced Lightweight High-Temperature Al-Ti-Ta Alloy.","authors":"Gourav Mundhra, Jien-Wei Yeh, B S Murty","doi":"10.3390/ma17215373","DOIUrl":"10.3390/ma17215373","url":null,"abstract":"In this study, a new lightweight Al-Ti-Ta alloy was developed through a synergistic approach, combining CALPHAD methodology and entropy-driven design. Following compositional optimization, the Al87.5Ti6.25Ta6.25 (at.%) alloy was fabricated and isothermally heat-treated at 475 °C for 24 h to attain equilibrium. X-ray diffraction (XRD), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC) analyses revealed a dual-phase microstructure comprising a 50 vol.% FCC matrix enriched in Al and 50 vol.% Al3(Ti,Ta)-type intermetallic phase (IP). Notably, the FCC phase exhibited a high-melting transition temperature of 660 °C, surpassing conventional Al-Si cast alloys. Phase-specific nanomechanical properties were evaluated using Nanoindentation. Microindentation tests demonstrated exceptional microhardness of approximately 3300 MPa. These results indicate the alloy's superior hardness compared to conventional alloys such as Al-Si (A390), 7075 Al alloy, and CP-Ti, even exceeding Ti-64 alloy at a 15% lower density. The alloy's stability under prolonged heat treatment at 475 °C, reflected by stable phases, microstructure, and mechanical properties, highlights its enhanced thermal stability, which can be attributed to entropy-driven phase stabilization. This study underscores the effectiveness of integrating entropy-driven design strategy with CALPHAD predictions for the accelerated development of advanced Al-based alloys.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"17 21","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547957/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Interlayer Temperature on Microstructure and Properties of High-Strength Low-Alloy Steel Manufactured Using Submerged-Arc Additive Manufacturing (SAAM). 层间温度对使用潜弧快速成型技术（SAAM）制造的高强度低合金钢微观结构和性能的影响

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-03 DOI: 10.3390/ma17215376

Meijuan Hu, Qiang Chi, Lingkang Ji, Weiwei Li, Shuai Yan, Fangjie Cheng

{"title":"Effect of Interlayer Temperature on Microstructure and Properties of High-Strength Low-Alloy Steel Manufactured Using Submerged-Arc Additive Manufacturing (SAAM).","authors":"Meijuan Hu, Qiang Chi, Lingkang Ji, Weiwei Li, Shuai Yan, Fangjie Cheng","doi":"10.3390/ma17215376","DOIUrl":"10.3390/ma17215376","url":null,"abstract":"Controlled interlayer temperature has a profound impact on both the microstructure and mechanical properties of the deposited components. In this study, thin-walled structures made of high-strength low-alloy steel were fabricated using the submerged-arc additive manufacturing process. The effects of varying temperature on the microstructure and mechanical properties of the components were studied. The results showed that the cooling rate within T8/5 decreased as the interlayer temperature increased, which caused the microstructure to transition from a fine-grained structure dominated by bainitic ferrite and granular bainite to a coarse-grained structure dominated by polygonal ferrite. The measurement of mechanical properties showed that due to the influence of the fine-grained structure, the components with low interlayer temperatures exhibit excellent hardness, high strength, and outstanding ductility and toughness. Furthermore, a faster cooling rate disrupts the stability of carbon diffusion, resulting in the development of increased quantities of residual austenitic films within the components with controlled low interlayer temperatures. This augmentation in residual austenite films strengthens the components' ductility and toughness, enabling the deposited components to exhibit exceptional impact toughness in low-temperature environments.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"17 21","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547495/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142622464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Nitrogen on Microstructure and Properties of SDSS 2507 Weld Joints by Gas Focusing Plasma Arc Welding. 氮对气体聚焦等离子弧焊 SDSS 2507 焊点微观结构和性能的影响

IF 3.1 3区材料科学

Materials Pub Date : 2024-11-03 DOI: 10.3390/ma17215375

Tianqing Li, Kai Wang, Yucheng Lei

{"title":"Effects of Nitrogen on Microstructure and Properties of SDSS 2507 Weld Joints by Gas Focusing Plasma Arc Welding.","authors":"Tianqing Li, Kai Wang, Yucheng Lei","doi":"10.3390/ma17215375","DOIUrl":"https://doi.org/10.3390/ma17215375","url":null,"abstract":"Regulating the phase ratio between austenite and ferrite in welded joints is crucial for welding super duplex stainless steel. Nitrogen plays a significant role in maintaining an optimal phase ratio. In this study, the focusing gas channel of gas-focused plasma arc welding was utilized to introduce nitrogen into the arc plasma, which was then transferred to the weld pool. Experiments with and without nitrogen addition were designed and conducted to examine the effects of nitrogen on the microstructure and properties of SDSS 2507 weld joints. The results show that nitrogen addition increased the austenite content in the weld metal from 22.2% to 40.2%. Nitrogen also altered the microstructure of the austenite, changing it from thin grain boundary austenite and small intragranular austenite to a large volume of coarse, side-plate Widmanstätten austenite. The ferrite in the weld metal exhibited a preferred orientation during growth, while the austenite showed a disordered orientation. Additionally, the maximum texture intensity of the ferrite decreased with nitrogen addition. Nitrogen addition led to an increase in the microhardness of the austenite in the weld metal, attributed to the solid solution strengthening effect of nitrogen and increased dislocation tangling, while it decreased the microhardness of the ferrite. This study enhances the welding theory of 2507 super duplex stainless steel and guides the practical application of gas-focused plasma arc welding for 2507 super duplex stainless steel.","PeriodicalId":18281,"journal":{"name":"Materials","volume":"17 21","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547302/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0