Metals Pub Date : 2024-05-23 DOI: 10.3390/met14060616

Adrián Claver, Andrea Hernández Acosta, Eneko Barba, Juan P. Fuertes, Alexia Torres, José A. García, Rodrigo Luri, Daniel Salcedo

{"title":"Study and Optimization of the Punching Process of Steel Using the Johnson–Cook Damage Model","authors":"Adrián Claver, Andrea Hernández Acosta, Eneko Barba, Juan P. Fuertes, Alexia Torres, José A. García, Rodrigo Luri, Daniel Salcedo","doi":"10.3390/met14060616","DOIUrl":"https://doi.org/10.3390/met14060616","url":null,"abstract":"Sheet metal forming processes are widely used in applications such as those in the automotive or aerospace industries. Among them, punching is of great interest due to its high productivity and low operating cost. However, it is necessary to optimize these processes and adjust their parameters, such as clearance, shear force or tool geometry, to obtain the best finishes and minimize crack generation. Thus, the main objective of this research work is to optimize the punching process to achieve parts that do not require subsequent processes, such as deburring, by controlling the properties of the starting materials and with the help of tools such as design of experiments and simulations. In the present study, tensile tests were performed on three steels with different compositions and three sample geometries. The information obtained from these tests has allowed us to determine the parameters of the Johnson–Cook damage criteria. Moreover, punching was performed on real parts and compared with simulations to analyze the percentage of burnish surface. The results obtained show that the methodology used was correct and that it can be extrapolated to other types of die-cutting processes by reducing the percentage of surface fractures and predicting the appearance of cracks. Furthermore, it was observed that clearance has a greater influence than processing speed, while the minimum percentage of the burnish area was observed for the minimum values of clearance.","PeriodicalId":510812,"journal":{"name":"Metals","volume":"38 33","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141103744","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}

引用次数: 0

Optimization of Welded Joints under Fatigue Loadings 疲劳载荷下焊接接头的优化

Metals Pub Date : 2024-05-23 DOI: 10.3390/met14060613

Paolo Livieri, Roberto Tovo

引用次数: 0

Effect of Electrolyte Temperature on Plasma Electrolytic Oxidation of Pure Aluminum 电解质温度对纯铝等离子电解氧化的影响

Metals Pub Date : 2024-05-23 DOI: 10.3390/met14060615

Yubing Cheng, Xuemei Shi, You Lv, Xinxin Zhang

{"title":"Effect of Electrolyte Temperature on Plasma Electrolytic Oxidation of Pure Aluminum","authors":"Yubing Cheng, Xuemei Shi, You Lv, Xinxin Zhang","doi":"10.3390/met14060615","DOIUrl":"https://doi.org/10.3390/met14060615","url":null,"abstract":"Plasma electrolytic oxidation (PEO) is normally carried out under conditions with electrolyte cooling. However, the effect of the temperature of the electrolytes on the PEO behavior and properties of the resulting coatings is seldom investigated. In this study, PEO of pure Al was carried out in a dilute aluminate electrolyte with the electrolyte temperature being controlled under low (~10–30 °C), medium (~40–50 °C) and high (~70–80 °C) temperature ranges, respectively. The morphology, microstructure, composition and phase component of the coatings fabricated under the different temperature ranges were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD). The corrosion resistances of the coatings were evaluated by electrochemical methods. The hardness of the coatings and substrate following the PEO treatment in the different electrolyte temperature ranges were also tested. It was found that a higher electrolyte temperature resulted in a higher growth rate and rougher coatings. Moreover, the α-Al2O3 content was reduced as the electrolyte temperature increased. The highest corrosion resistance was registered for the coating obtained under the lowest temperature range, whereas the corrosion resistance of the coating obtained under the highest temperature range was the worst. The higher growth rate under high electrolyte temperatures was associated with the increased kinetics of the PEO reactions. However, the temperature of the electrolyte should be controlled under a suitable range to ensure reasonable coating properties.","PeriodicalId":510812,"journal":{"name":"Metals","volume":"38 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141108048","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}

引用次数: 0

Cracking Behavior of the ZhS6K Superalloy during Direct Laser Deposition with Induction Heating ZhS6K 超合金在感应加热直接激光沉积过程中的开裂行为

Metals Pub Date : 2024-05-22 DOI: 10.3390/met14060610

Anastasiia Dmitrieva, Anastasiya Semenyuk, M. Klimova, Ilya Udin, Dmitrii Mukin, Artur Vildanov, S. Zherebtsov, O. Klimova-Korsmik, N. Stepanov

引用次数: 0

Research on the Chloride Ion Corrosion Resistance of Cu-Sb-Added Low-Carbon Steel 添加铜锑的低碳钢耐氯离子腐蚀性研究

Metals Pub Date : 2024-05-22 DOI: 10.3390/met14060611

Yuanyu Chen, Zhengbing Meng, Yuxiang Li, Jialong Shen

引用次数: 0

Analysis of a New Process for Forming Two Flanges Simultaneously in a Hollow Part by Extrusion with Two Moving Dies 用两个移动模头挤压同时在空心部件中形成两个法兰的新工艺分析

Metals Pub Date : 2024-05-22 DOI: 10.3390/met14060612

G. Winiarski, A. Gontarz, A. Skrzat, Marta Wójcik, Sylwia Wencel

引用次数: 0

Kinetics of HCP-BCC Phase Transition Boundary in Magnesium at High Pressure 高压下镁的 HCP-BCC 相变边界动力学

Metals Pub Date : 2024-05-22 DOI: 10.3390/met14060609

N. Daphalapurkar

引用次数: 0

Biocompatibility and Corrosion Resistance of Si/ZrO2 Bioceramic Coating on AZ91D Using Electron Beam Physical Vapor Deposition (EB-PVD) for Advanced Biomedical Applications 利用电子束物理气相沉积（EB-PVD）在 AZ91D 上镀 Si/ZrO2 生物陶瓷涂层的生物相容性和耐腐蚀性，用于先进的生物医学应用

Metals Pub Date : 2024-05-21 DOI: 10.3390/met14060607

A. Thirugnanasambandam, M. Gupta, Rama Murugapandian

{"title":"Biocompatibility and Corrosion Resistance of Si/ZrO2 Bioceramic Coating on AZ91D Using Electron Beam Physical Vapor Deposition (EB-PVD) for Advanced Biomedical Applications","authors":"A. Thirugnanasambandam, M. Gupta, Rama Murugapandian","doi":"10.3390/met14060607","DOIUrl":"https://doi.org/10.3390/met14060607","url":null,"abstract":"Herein, ZrO2 and Si + ZrO2 composite coatings on AZ91D alloys are deposited at a constant voltage of 8 kV and 1 Å/s deposition rate using the electron beam physical vapor deposition (EBPVD) method. Further, the samples are examined for surface morphology, phase analysis, adhesion, corrosion, and antibacterial properties, as per ASTM standards. The adhesion strength of the composite (Si + ZrO2) coating nominally dropped (9%) compared to the ZrO2 coating even when the coating thickness increased by 18%. However, the composite (Si + ZrO2) coating improved wettability because silanol promotes hydrogen bonding with water molecules, which elevates the surface energy of the silica and increases its hydrophilic nature. Further, increased wettability and surface roughness have the potential to improve cell adhesion and proliferation. The corrosion potential (Ecorr) values of the coated samples exhibited a positive shift in the potentiodynamic polarization curve, indicating a substantial increase in their corrosion resistance in the artificial blood plasma (ABP) electrolyte. Similarly, SEM images of both coated corroded samples are less affected in the ABP solution, indicating that the coating mitigated heavy cracks and micropores, protecting them from corrosion. The Si + ZrO2 coatings exhibited exceptional performance in preventing bacterial infiltration by Staphylococcus aureus, thus inhibiting the subsequent formation of biofilms. In addition, these coatings demonstrate improved vitality among fibroblast cells, enabling better cellular spreading and proliferation.","PeriodicalId":510812,"journal":{"name":"Metals","volume":"50 13","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141113356","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}

引用次数: 0

Efficient Metal Extraction from Dilute Solutions: A Review of Novel Selective Separation Methods and Their Applications 从稀释溶液中高效提取金属：新型选择性分离方法及其应用综述

Metals Pub Date : 2024-05-21 DOI: 10.3390/met14060605

S. Rahmati, Roshanak Adavodi, M. Hosseini, Francesco Vegliò

{"title":"Efficient Metal Extraction from Dilute Solutions: A Review of Novel Selective Separation Methods and Their Applications","authors":"S. Rahmati, Roshanak Adavodi, M. Hosseini, Francesco Vegliò","doi":"10.3390/met14060605","DOIUrl":"https://doi.org/10.3390/met14060605","url":null,"abstract":"Notable increases in metal consumption and declining ore grades in recent decades have stressed the significance of dilute solutions as secondary sources of valuable metals. Moreover, environmental considerations and the imperative of sustainable development have further emphasized their treatment. Therefore, finding an efficient solution for separating metals from dilute solutions has attracted the attention of numerous researchers. This paper reviews the purification processes of dilute solutions and highlights key achievements of published research works. Although this study focuses on evaluating the efficiency of recently developed aqueous-phase purification methods, such as immobilized ligands, ionic liquids, and air-assisted solvent extraction, the application of conventional processes to treat these solutions, such as solvent extraction, ion exchange, membranes, chemical precipitation, and adsorption are also briefly outlined. To provide a comprehensive assessment, more than 200 research articles were reviewed, and their key findings are stated in this study. This research contributes to the advancement of knowledge of metal recovery from dilute solutions and sheds light on the dynamic evolution of this field.","PeriodicalId":510812,"journal":{"name":"Metals","volume":"54 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141116867","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}

引用次数: 0

Electron Donor-Induced Electrochemical Reduction in Vanadate Anions to Enhance the Electrochemical Performance of Plasma Electrolytic Oxidation Layers 电子供体诱导钒酸根阴离子电化学还原以提高等离子电解氧化层的电化学性能

Metals Pub Date : 2024-05-21 DOI: 10.3390/met14060606

M. Kaseem, A. Fattah‐alhosseini, Burak Dikici

{"title":"Electron Donor-Induced Electrochemical Reduction in Vanadate Anions to Enhance the Electrochemical Performance of Plasma Electrolytic Oxidation Layers","authors":"M. Kaseem, A. Fattah‐alhosseini, Burak Dikici","doi":"10.3390/met14060606","DOIUrl":"https://doi.org/10.3390/met14060606","url":null,"abstract":"Despite the increasing interest in enhancing the electrochemical stability of Al alloys through protective coatings, the role of electron donor agents during coating formation remains poorly understood in terms of morphological control and anticorrosion properties in aqueous environments. In this context, 1H-Benzotriazole (BTA) was utilized as a proof of concept to regulate the in situ reactive integration of V2O5 into the alumina layer via the plasma electrolytic oxidation of a 6061 Al alloy. BTA played a crucial role in chemically incorporating V2O5 into the alumina coating by supplying electrons to VO3− ions, facilitating their reduction. The quantity of BTA added to the electrolyte was found to influence defect morphology and concurrently enhance the chemical incorporation of V2O5. Notably, corrosion measurements revealed that the less porous hybrid film formed with higher corrosion resistance was associated with the utilization of increased concentrations of BTA. These findings highlight the potential of BTA in modifying the structure and improving the ability of alumina coatings to resist corrosion, enabling advanced applications in protecting Al alloys from corrosion.","PeriodicalId":510812,"journal":{"name":"Metals","volume":"137 27","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141114987","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}

引用次数: 0

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