Journal of Advanced Joining Processes最新文献

{"title":"Microstructure and mechanical properties of ethylene pyrolysis furnace tube weld joints after service","authors":"Jingfeng Guo ,&nbsp;Xiangping Guo ,&nbsp;Xiaoyu Li ,&nbsp;Guobing Hu ,&nbsp;Wenwen Liu","doi":"10.1016/j.jajp.2025.100327","DOIUrl":"10.1016/j.jajp.2025.100327","url":null,"abstract":"<div><div>The microstructure and mechanical properties of weld joints in ethylene pyrolysis furnace (Cr25Ni35NbM alloy and Cr35Ni45NbM alloy tube) after service were investigated in this work. The microstructure of the new weld joint and base metal of pyrolysis furnace tube vary widely, and the high temperature creep rupture time of the weld joint is only reached 50% of the base metal (1100°C, 16MPa). After high-temperature service, the microstructure of weld metal and base metal deteriorated and the high temperature creep strength decreased. Therefore, the microstructure of weld metal and base metal is tend to uniform, and the creep strength of weld joint and base metal reached the same level. After high-temperature aging, the primary carbides coarsen and secondary carbides precipitation results in a uniform microstructure and creep property of weld metal and base metal. The high temperature creep rupture time of weld joint reached 90% of base metal (1100°C, 16MPa). As the dispersion strengthening effect of the secondary carbide disappears, the creep strength of the weld joint no longer increases, but begins to decrease. Both high temperature service and elevated temperature aging result in the homogenization of the weld joint and base metal, and the high-temperature creep strength also reaches the same level.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100327"},"PeriodicalIF":3.8,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535840","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}

{"title":"Application of stress-state-dependent ductile damage and failure model to clinch joining for a wide range of tool and material combinations","authors":"Johannes Friedlein ,&nbsp;Stephan Lüder ,&nbsp;Jan Kalich ,&nbsp;Hans Christian Schmale ,&nbsp;Max Böhnke ,&nbsp;Malte Schlichter ,&nbsp;Mathias Bobbert ,&nbsp;Gerson Meschut ,&nbsp;Paul Steinmann ,&nbsp;Julia Mergheim","doi":"10.1016/j.jajp.2025.100299","DOIUrl":"10.1016/j.jajp.2025.100299","url":null,"abstract":"<div><div>The clinch joining process is simulated for 22 different tool- and material-combinations, using a modular axisymmetric finite element simulation model. Two ductile metals are considered for the sheets, namely the dual-phase steel HCT590X and the aluminium alloy EN AW-6014 T4. A finite elasto-plastic material model is utilised to capture the inherent large plastic strains. Moreover, it is coupled to stress-state-dependent ductile damage and failure to successfully predict possible fracture during the clinch joining process. For all 22 clinch combinations a good agreement is obtained between simulations and experiments, regarding the geometry of the clinch joint, the process force and the occurrence of material failure. This represents a significant advance in the development and comprehension of a versatile process chain resulting from joint research efforts. The validated process simulations are then applied to study the influence of the tool geometries, sheet pre-stretch, and friction. Failure is herein always observed by neck fracture. Nevertheless, detailed analyses of the stress state evolution during the joining process for various locations reveal that the material is exposed to distinctly non-proportional loading paths demanding suitable stress-state-dependent evolution laws. Moreover, even for valid joints, process-induced damage is distributed throughout the joint. Incorporating the damage-induced softening causes an accelerated failure evolution, but has less influence on the global behaviour.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100299"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing microstructure and performance: The impact of pre-deformation and rotational speed on friction stir processed Cu-W composites","authors":"Masoomeh Oliaei,&nbsp;Roohollah Jamaati,&nbsp;Hamed Jamshidi Aval","doi":"10.1016/j.jajp.2025.100308","DOIUrl":"10.1016/j.jajp.2025.100308","url":null,"abstract":"<div><div>This study investigated the effects of pre-deformation induced by asymmetric rolling on copper-based metal, as well as rotational speed during friction stir processing, on the microstructure, mechanical properties, and electrical conductivity of tungsten-reinforced copper matrix composites. The results show that increasing the rotational speed up to 800 rpm leads to a more uniform distribution of tungsten particles within the stir zone. However, at rotational speeds above 800 rpm, the distribution of tungsten reinforcing particles becomes less uniform. The accumulated strain in the stir zone increases from 0.3056 to 0.3967 s^-1 as the rotational speed rises from 600 to 1200 rpm. Additionally, as the tool rotational speed increases from 600 to 1200 rpm, the grain size in the stir zone grows from 6.2 ± 0.7 to 13.2 ± 1.5 µm. The Cu-W composite processed at a tool rotational speed of 800 rpm achieves the highest values in hardness (124.9 ± 8.9 HV0.1), ultimate tensile strength (307.4 ± 11.8 MPa), tensile toughness (92.1 ± 1.1 MJ/m³), and electrical conductivity (92.8 ± 1.3 %IACS). Compared to the as-rolled copper-based metal, the electrical conductivity of the Cu-W composite fabricated at 800 rpm increases by 8.8 %.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100308"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921668","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}

{"title":"Hot corrosion mechanism in transient liquid phase bonded HX superalloy: Effect of bonding time","authors":"H. Bakhtiari ,&nbsp;M. Farvizi ,&nbsp;M.R. Rahimipour ,&nbsp;A. Malekan","doi":"10.1016/j.jajp.2025.100298","DOIUrl":"10.1016/j.jajp.2025.100298","url":null,"abstract":"<div><div>This study investigates the hot corrosion behavior of transient liquid phase (TLP) bonding in Hastelloy X (HX) subjected to a molten salt environment of Na₂SO₄–V₂O₅ at 900°C, examining various bonding times of 5, 20, 80, 320, and 640 minutes. The samples were bonded at 1070°C, and their corrosion products along with microstructural features were examined. The microstructural analysis confirmed the presence of primary eutectic phases in the joints, including Ni-rich borides and silicides, Ni-Si eutectics, and several chromium-rich borides. Samples bonded for 20 and 80 min showed inferior hot corrosion resistance. Conversely, the sample that was bonded for 320 minutes exhibited improved resistance because of a more uniform distribution of alloy elements and lower boride concentrations at the interface. During the hot corrosion tests, initially, the TLP surface is covered by a dense Cr₂O₃ and NiO layer. After 20 h of hot corrosion, due to the reaction of oxide layers with vanadium, NaVO₃ forms, while sulfur diffusion leads to the evolution of internal sulfides based on Ni, Cr, and Mo. The presence of NaVO₃ and SO₃, along with the reduction of Cr₂O₃, significantly affects the hot corrosion resistance over prolonged exposure.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100298"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Exploring Wire-Arc Additive Manufactured Rivets for Joining Hybrid Electrical Busbars”","authors":"Pedro M.S. Rosado ,&nbsp;Rui F.V. Sampaio ,&nbsp;João P.M. Pragana ,&nbsp;Nuno M.S. Pereira ,&nbsp;Ivo M.F. Bragança ,&nbsp;Carlos M.A. Silva ,&nbsp;Paulo A.F. Martins","doi":"10.1016/j.jajp.2025.100291","DOIUrl":"10.1016/j.jajp.2025.100291","url":null,"abstract":"","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100291"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261827","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}

{"title":"The role of force and torque in friction stir welding: A detailed review","authors":"Mostafa Akbari ,&nbsp;Milad Esfandiar ,&nbsp;Amin Abdollahzadeh","doi":"10.1016/j.jajp.2025.100289","DOIUrl":"10.1016/j.jajp.2025.100289","url":null,"abstract":"<div><div>Friction Stir Welding (FSW) is a significant solid-state joining technique for metals and polymers, effectively addressing challenges posed by fusion welding. The application of FSW relies on the development of cost-effective, durable tools that consistently produce high-quality welds. The forces and torque generated during welding are critical to this process, which influence weld integrity, process efficiency, and tool longevity. This review explores methodologies for estimating these parameters—analytical, numerical, and experimental—and discusses measurement techniques, including direct and indirect methods. It also examines variations in forces across different FSW types, such as Conventional FSW, Bobbin Tool FSW, and Stationary Shoulder FSW, emphasizing the differences in their operational mechanics. Additionally, the review highlights how process parameters like tool shape, size, tilt angle, and welding speed can be optimized to enhance performance and investigates the use of force measurements for real-time weld monitoring and defect detection, contributing to the reliability of FSW in industrial applications. The results indicate that the use of force measurement for online monitoring of welding processes, particularly concerning welding defects and overall weld quality, has garnered significant attention in recent years. ​ A notable advancement in this field is the implementation of machine learning tools, which enhance the ability to predict potential weld defects and improve overall weld quality. This innovative approach not only streamlines the monitoring process but also contributes to the evolution of FSW technologies, ensuring higher standards of quality and safety in various applications.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100289"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ti and TiAlV foils enhanced with PLD and flash-deposited carbon: On cytocompatibility and antibacterial activity","authors":"Petr Slepička ,&nbsp;Klaudia Hurtuková ,&nbsp;Silvie Rimpelová ,&nbsp;Šárka Trhoňová ,&nbsp;Jiří Martan ,&nbsp;Michal Procházka ,&nbsp;Václav Švorčík ,&nbsp;Nikola Slepičková Kasálková","doi":"10.1016/j.jajp.2024.100274","DOIUrl":"10.1016/j.jajp.2024.100274","url":null,"abstract":"<div><div>In this study, we investigated the effects of carbon layer deposition on titanium (Ti) and titanium alloy (TiAlV) substrates using \"flash\" vaporization and pulsed laser deposition (PLD) techniques. Raman spectroscopy revealed that the PLD method produced a higher sp3 carbon bond content than the evaporation method (61 vs<em>.</em> 47 %). Atomic force microscopy and surface wettability analyzes showed differences in surface roughness and contact angle, with PLD-deposited samples exhibiting enhanced hydrophilicity and wrinkled morphology. Subsequent laser annealing optimized surface properties by increasing hydrophobicity, which is critical for cell adhesion. Surface chemistry analysis via scanning electron microscopy and energy dispersive spectroscopy demonstrated significant carbon enrichment in the PLD-deposited samples, mainly for TiAlV substrate. Cytocompatibility tests using human osteosarcoma cells (U-2 OS) revealed varying cell adhesion and proliferation based on surface modification, with PLD-deposited layers promoting better cell interaction. Both carbon deposition techniques enhanced antibacterial effect. This suggests the potential of PLD-deposited carbon layers for biomedical applications, particularly in enhancing implant surfaces for improved cell growth and adhesion, and reduce bacteria, the nanostructured substrates may serve also for subsequent replication process into polymer.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100274"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasonic-assisted press-fitting: A superior method for reducing press-fit force compared to conventional press-fitting","authors":"Hamed Razavi ,&nbsp;Hamid Reza Masoumi","doi":"10.1016/j.jajp.2025.100282","DOIUrl":"10.1016/j.jajp.2025.100282","url":null,"abstract":"<div><div>This study investigates the impact of ultrasonic vibrations on the press-fitting process, aiming to reduce the maximum press-fit force required in mechanical assemblies. Press-fitting involves inserting a pin into a bushing of a slightly smaller diameter, leading to high press-fit forces, which is crucial in the analysis and performance assessment of the process. The research investigates the effects of assembly speed and ultrasonic vibration power on the reduction of press-fit force. Through a series of 15 distinct experiments employing both conventional press-fitting (CPF) and ultrasonic-assisted press-fitting (UAPF), it was found that increasing the power of ultrasonic vibrations leads to a significant decrease in the maximum press-fit force, whereas reducing the assembly speed has a minor effect. The maximum press-fit force is reduced by over 80 % when utilizing maximum vibration power. The findings indicate that the UAPF method is a promising technique to reduce the maximum press-fit force, thus improving the feasibility of the press-fitting process. This research has significant implications for the manufacturing industry, enabling the assembly of sensitive parts without excessive force and improving the overall assembly performance.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100282"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143133070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of weld quality in laser welding of hardmetal and steel using high-speed imaging and machine learning methods","authors":"Mohammadhossein Norouzian ,&nbsp;Mahan Khakpour ,&nbsp;Marko Orosnjak ,&nbsp;Atal Anil Kumar ,&nbsp;Slawomir Kedziora","doi":"10.1016/j.jajp.2025.100318","DOIUrl":"10.1016/j.jajp.2025.100318","url":null,"abstract":"<div><div>Laser welding of steel and hardmetal presents significant challenges due to their differing material properties. Improper laser welding parameters can result in unstable joints, ultimately leading to reduced mechanical strength of the weld. Therefore, defining an optimal process window is critical to ensuring weld quality. In addition, a continuous process monitoring method like High-Speed Imaging (HSI) is essential in real industrial applications to maintain stability and detect potential defects. Understanding plume dynamics helps identify the most important features of weld quality, but it also provides deeper insight into operational parameters that discriminate different weld types. Analysis of individual image plume frames from HSI reveals distinct statistical features that are identified as unique to each welding condition. Performing systematic feature selection using plume morphology, spatter generation and weld quality, we achieved&gt;95 % leveraging Machine Learning (ML) classifiers. Particularly, Gradient Boosting Classifier (GBC), Linear Discriminant Analysis (LDA), Multinomial Logistic Regression (MNL-LR), Support Vector Machine (SVM), and Random Forest (RF), where the RF obtained &gt;99 % classification accuracy of weld quality. The RF was then used in performing Recursive Feature Elimination (RFE), and with the robustness analysis, we managed to reduce the number of features from forty-nine to nine features while maintaining satisfactory performance (Accuracy = 0.981, F1-score = 0.961, AUROC = 0.997). The position of the weld plume, plume eccentricity and plume width are the most essential features that lead to the improvement of node purity and classification accuracy.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100318"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144194641","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}

{"title":"Fatigue crack growth and residual stress in simultaneous double-sided friction stir welded aluminum alloy AA6061-T6","authors":"Hendrato ,&nbsp;Muizuddin Azka ,&nbsp;M.Refai Muslih ,&nbsp;Rifky Apriansyah ,&nbsp;Nidya Jullanar Salman ,&nbsp;Sulardjaka ,&nbsp;Ilhamdi ,&nbsp;Jos Istiyanto ,&nbsp;Guino Verma ,&nbsp;Andik Dwi Kurniawan ,&nbsp;Irfan Ansori ,&nbsp;Lukman Shalahuddin ,&nbsp;Jean Mario Valentino ,&nbsp;Yohanes Pringeten Dilianto Sembiring Depari ,&nbsp;Triyono","doi":"10.1016/j.jajp.2025.100300","DOIUrl":"10.1016/j.jajp.2025.100300","url":null,"abstract":"<div><div>Friction stir welding has demonstrated significant efficacy as a solid-state welding methodology for aluminum alloys, including AA6061-T6, and is extensively utilized within automotive and aerospace engineering domains. Nonetheless, conventional FSW methods often lead to uneven residual stress distributions, compromising the material's resistance to fatigue cracking. Simultaneous Double-sided Friction Stir Welding (SDFSW) was introduced to overcome this limitation, offering enhanced welding quality by welding from both sides. This study examines the influence of tool rotational velocity on the fatigue crack growth and the distribution of residual stresses in the SDFSW process applied to AA6061-T6 aluminum. Several rotational velocity combinations were employed to assess their effect on joint quality, encompassing residual stress distribution and cyclic load performance. Based on previous experiments, the SDFSW process uses upper and lower tool speeds. These are 965/965 rpm, 967/1251 rpm and 965/1555 rpm. Fatigue crack growth testing complied with ASTM E647 standards, and the residual stress distribution was assessed through the X-ray diffraction cos α method. Additional mechanical property assessments were performed, including radiographic analysis, examination of the macrostructure and microstructure, microhardness testing, evaluation of tensile strength, and fracture characterization. The findings reveal that the rotational velocity of the tool significantly impacts the weld zone's microstructure, influencing mechanical properties, residual stress distribution, and crack growth behaviors. Among the tested conditions, the tool's rotational speed of 965/1555 rpm yielded the highest tensile strength of approximately 179.82 MPa, representing about 53 % of the strength of the base material and the greatest microhardness of 85 HV. This velocity combination also demonstrated a low fatigue crack growth rate, with Paris law coefficients C and n measured at 2E-08 and 3.6931, respectively, along with a more favorable residual stress distribution.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"11 ","pages":"Article 100300"},"PeriodicalIF":3.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}