Journal of Advanced Joining Processes最新文献_第4页

Effects of adjustable ring mode laser-beam control on microstructure and mechanical properties of AA6N01-T5 aluminum alloy in laser-arc hybrid welding 可调环模激光束控制对AA6N01-T5铝合金激光电弧复合焊接组织和力学性能的影响

IF 4

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-11-08 DOI: 10.1016/j.jajp.2025.100358

Seonghyun Kim , Hyun-Uk Jun , Jooyong Cheon , Gyuheun Lee , Changwook Ji , Yang-Do Kim

{"title":"Effects of adjustable ring mode laser-beam control on microstructure and mechanical properties of AA6N01-T5 aluminum alloy in laser-arc hybrid welding","authors":"Seonghyun Kim , Hyun-Uk Jun , Jooyong Cheon , Gyuheun Lee , Changwook Ji , Yang-Do Kim","doi":"10.1016/j.jajp.2025.100358","DOIUrl":"10.1016/j.jajp.2025.100358","url":null,"abstract":"<div><div>This study evaluated the effects of beam control in adjustable ring mode laser-arc hybrid welding on the microstructure, porosity, and mechanical properties of a 5-mm-thick AA6N01-T5 Al alloy. Three laser-beam conditions—ring-beam hybrid welding (RBHW), center-beam hybrid welding (CBHW), and dual-beam hybrid welding (DBHW)—were compared under similar heat input conditions. The factors with the most significant influence on the mechanical properties in the welding of the AA6N01-T5 Al alloy are the porosity, grain size, and presence of strengthening precipitates. The weld porosity was quantified via high-resolution X-ray three-dimensional computed tomography, the grain structure was characterized via electron backscatter diffraction, the distribution and content of Mg—a key element in precipitation strengthening—were examined via electron probe microanalysis, and tensile and microhardness tests were performed in compliance with ASTM <span><span>standards</span><svg><path></path></svg></span>. RBHW achieved the lowest porosity (0.77 %) and the highest elongation (8.7 %) owing to the stable keyhole geometry and enhanced molten-pool convection. DBHW exhibited the smallest equiaxed grain size (179.43 μm) and the lowest Mg loss (0.89 wt%), resulting in the highest tensile (178.9 MPa) and yield (121.8 MPa) strengths. CBHW exhibited a combination of high porosity, coarse grains, and severe Mg loss, which degraded the mechanical performance of the weld. These findings clarify that the laser-beam energy distribution influences the molten-pool behavior, microstructure, and mechanical properties of the weld, thereby affecting the performance and reliability of high-strength Al alloy welds in lightweight manufacturing applications.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100358"},"PeriodicalIF":4.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145519439","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

Enhancing the performance of double-flush riveted joints through hybridization with adhesive bonding 通过与胶粘接的杂交，提高双平头铆接接头的性能

IF 3.8

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-06-18 DOI: 10.1016/j.jajp.2025.100324

João M.B. Alpendre , Pedro M.S. Rosado , Rui F.V. Sampaio , João P.M. Pragana , Ivo M.F. Bragança , Carlos M.A. Silva , Paulo A.F. Martins

{"title":"Enhancing the performance of double-flush riveted joints through hybridization with adhesive bonding","authors":"João M.B. Alpendre , Pedro M.S. Rosado , Rui F.V. Sampaio , João P.M. Pragana , Ivo M.F. Bragança , Carlos M.A. Silva , Paulo A.F. Martins","doi":"10.1016/j.jajp.2025.100324","DOIUrl":"10.1016/j.jajp.2025.100324","url":null,"abstract":"<div><div>This paper explores the potential to enhance the mechanical performance of joints created through a new joining-by-forming technique called hybrid double-flush riveting. To achieve this, adhesive bonding is used to form hybrid lap joints with superior mechanical properties. The study focuses on high-strength steel sheets and starts by identifying the appropriate surface conditions necessary for producing strong adhesive-bonded joints. A similar strategy is applied to construct double-flush riveted joints, focusing on the geometric variables involved in the process. Hybrid joints are then created by integrating adhesive bonding with double-flush riveting, with the second carried out before or after curing is completed. The experimental development is supported by finite element analysis conducted with an in-house computer program.</div><div>The mechanical performance of the hybrid joints is compared to that of purely adhesive-bonded and conventionally double-flush riveted joints through shear and peel destructive testing. Results demonstrate that hybrid joints ultimately provide greater joint strength for both solicitations. This allows showcasing the hybridization of double-flush riveting with adhesive bonding as an effective solution for applications where joint strength and continuity are essential.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100324"},"PeriodicalIF":3.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330512","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

Analyzing the utilization of high-voltage electric fields for laser material processing 分析高压电场在激光材料加工中的应用

IF 4

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-08-10 DOI: 10.1016/j.jajp.2025.100341

Christian Frey , Mikail Kacar , Arda Hiz , Robert Gerlach , Willem Leterme , Simon Olschok

{"title":"Analyzing the utilization of high-voltage electric fields for laser material processing","authors":"Christian Frey , Mikail Kacar , Arda Hiz , Robert Gerlach , Willem Leterme , Simon Olschok","doi":"10.1016/j.jajp.2025.100341","DOIUrl":"10.1016/j.jajp.2025.100341","url":null,"abstract":"<div><div>Laser material processing has become an essential technique in industrial manufacturing in form of welding, drilling, cutting and structuring. However, process emissions such as the metal vapor plume pose a challenge, as they can impair the efficiency and precision of the laser process through reflection, absorption, and scattering. Conventional methods attempt to reduce the influence of the metal vapor plume by using shielding gases to remove the particles from the laser beam path. A novel alternative is the use of electric fields for targeted manipulation of the metal vapor to control the extinction effects. High voltage capacitors can precisely control the electric field which offers greater adaptability to a dynamic laser process. The following study investigates the utilization of high voltage capacitor configurations for generating electric fields to actively deflect metal vapor from the laser beam path during laser welding. The distribution of the electric field is analyzed using the finite element method (FEM) for the considered capacitor geometries. The weld seam geometry shows a distinct geometry depending on the selected capacitor arrangement, and the weld penetration depth decreases with the use of the electric field. The measurable trend remains preliminary, since it is assumed that the welding fume is held over the welding position by the electric field, which influences the result.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100341"},"PeriodicalIF":4.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144829242","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

Mechanistic insight into cooling-rate-driven bubble evolution and interfacial bonding strength in directly bonded Ti–PET materials 直接结合Ti-PET材料中冷却速率驱动气泡演化和界面结合强度的机理研究

IF 4

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-08-18 DOI: 10.1016/j.jajp.2025.100345

Katsuyoshi Kondoh , Nodoka Nishimura , Kazuki Shitara , Shota Kariya , Ke Chen , Abdillah Sani Bin Mohd Najib , Junko Umeda

{"title":"Mechanistic insight into cooling-rate-driven bubble evolution and interfacial bonding strength in directly bonded Ti–PET materials","authors":"Katsuyoshi Kondoh , Nodoka Nishimura , Kazuki Shitara , Shota Kariya , Ke Chen , Abdillah Sani Bin Mohd Najib , Junko Umeda","doi":"10.1016/j.jajp.2025.100345","DOIUrl":"10.1016/j.jajp.2025.100345","url":null,"abstract":"<div><div>This study elucidates the mechanistic relationship between cooling rate and interfacial bubble evolution in direct bonding of commercially pure titanium (Ti) to polyethylene terephthalate (PET). Joints were fabricated via a thermal press-bonding process under two distinct cooling regimes—rapid and slow cooling—and the dynamic behavior of residual gas bubbles was analyzed through in-situ optical observation. Slow cooling was found to markedly reduce both the size and population density of interfacial bubbles, attributed to enhanced gas re-dissolution and diffusion within the softened PET matrix at elevated temperatures. Quantitative image analysis revealed that the bubble area fraction decreased by >50 % under slow cooling conditions. Tensile shear testing showed that joints fabricated under slow cooling exhibited significantly higher bond strength—up to 1.5 times greater than those produced under rapid cooling—highlighting the deleterious role of residual bubbles as interfacial defects. Fractographic observations further indicated that slow cooling altered bubble morphology from network-like, dome-shaped structures to isolated, spherical forms, thereby increasing the effective bonded area and promoting interfacial adhesion. These findings provide critical insight into thermally driven interfacial phenomena in metal–polymer joining and underscore the importance of thermal management strategies for optimizing joint integrity.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100345"},"PeriodicalIF":4.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144886020","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

Data-driven parameter optimization for bead geometry in wire arc additive manufacturing of 17-4 PH stainless steel 17-4 PH不锈钢丝弧增材制造中焊头几何参数的数据驱动优化

IF 3.8

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-05-30 DOI: 10.1016/j.jajp.2025.100319

Muhammad Irfan , Yun-Fei Fu , Shalini Singh , Sajid Ullah Butt , Abul Fazal Arif , Osezua Ibhadode , Ahmed Qureshi

{"title":"Data-driven parameter optimization for bead geometry in wire arc additive manufacturing of 17-4 PH stainless steel","authors":"Muhammad Irfan , Yun-Fei Fu , Shalini Singh , Sajid Ullah Butt , Abul Fazal Arif , Osezua Ibhadode , Ahmed Qureshi","doi":"10.1016/j.jajp.2025.100319","DOIUrl":"10.1016/j.jajp.2025.100319","url":null,"abstract":"<div><div>Due to its high strength, corrosion resistance, and toughness, 17-4 Precipitation Hardening (PH) stainless steel is widely used in aerospace, petrochemical, and marine industries. Additive manufacturing (AM) technologies enable the fabrication of complex and/or customized components while offering superior material efficiency and shorter lead times. Because of its high deposition rate, Wire Arc Additive Manufacturing (WAAM) can produce large metal structures. However, consistent bead profiles remain challenging because the process is highly sensitive to variations in thermal input and deposition conditions. Achieving uniform bead geometry during additive manufacturing is essential to avoid defects such as humming, spattering, and distortion, which can compromise the structural integrity of 3D components.</div><div>To achieve a uniform bead profile in WAAM, in this study, a full-factorial design of experiments is implemented to optimize the process parameters such as Wire Feed Rate (WFR), Torch Travel Speed (TTS), and Gas Flow Rate (GFR) for 17-4PH stainless steel. A backpropagation neural network (BPNN) is trained to model a non-linear relationship between these process parameters and bead geometry. Moreover, a genetic algorithm (GA) optimizes for bead uniformity and deposition efficiency. With a Pearson Correlation Coefficient (PCC) of 0.85, the optimized parameters exhibited significantly improved uniformity and higher deposition efficiency.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100319"},"PeriodicalIF":3.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242889","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

Mechanical properties of intermetallic compounds at solder joint interfaces investigated using nanoindentation technique 利用纳米压痕技术研究了焊点界面金属间化合物的力学性能

IF 4

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-10-27 DOI: 10.1016/j.jajp.2025.100356

Wei-Rong Yang , Kiyokazu Yasuda , Jenn-Ming Song

引用次数: 0

Visualization of material flow in one-step double-acting FSW of AA1100: role of tracer type and morphology AA1100一步双作用FSW物料流可视化：示踪剂类型和形态的作用

IF 4

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-09-16 DOI: 10.1016/j.jajp.2025.100349

Eko Prasetya Budiana, Anas Fikri Makarim, Heru Sukanto, Nurul Muhayat, Triyono

{"title":"Visualization of material flow in one-step double-acting FSW of AA1100: role of tracer type and morphology","authors":"Eko Prasetya Budiana, Anas Fikri Makarim, Heru Sukanto, Nurul Muhayat, Triyono","doi":"10.1016/j.jajp.2025.100349","DOIUrl":"10.1016/j.jajp.2025.100349","url":null,"abstract":"<div><div>Aluminum is widely used in industry due to its lightweight, high strength, and cost-effectiveness. However, conventional fusion welding of aluminum often results in porosity defects. One-step Double-Acting Friction Stir Welding (ODFSW) is an advancement of the FSW technique that enables simultaneous double-sided welding in a single pass at sub-melting temperatures, thereby overcoming porosity issues in fusion welding while also addressing challenges in single-sided FSW of thicker plates, such as incomplete penetration and root flaws. The quality of ODFSW joints is strongly influenced by the material flow behavior during welding. To investigate this flow, the Tracer Insert Technique was employed. This study examines the effect of tracer material type and form on the visibility of material flow in ODFSW of AA1100 aluminum with a 1 mm pin overlap. Three types of tracers were used: SiO₂ powder, AA6061 powder, and ER5356 wire. Results revealed that powder-form tracers, particularly AA6061, provided better visualization due to more uniform distribution and higher color contrast caused by the presence of Mg₂Si precipitates. Multi-Attribute Decision Making (MADM) evaluation identified AA6061 as the most effective tracer, exhibiting minimal defects. Material flow visualization indicated distinct patterns, including flow from the advancing side (AS) to the retreating side (RS), material accumulation at the weld exit, onion ring formation, microvoids at pin tips, and homogeneous mixing in the mid-plate region. Additionally, a funnel-shaped flow profile and material concentration at the mid-thickness zone were observed, attributed to the mechanical interaction between the upper and lower tools.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100349"},"PeriodicalIF":4.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145095122","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

Effect of bonding temperature on microstructure and mechanical properties of TLP-bonded Ti-6Al-4V/Inconel 718 joints using BNi2/Cu interlayer 结合温度对BNi2/Cu夹层Ti-6Al-4V/Inconel 718 tlp结合接头组织和力学性能的影响

IF 3.8

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-07-06 DOI: 10.1016/j.jajp.2025.100328

Sepehr Pourmorad Kaleybar, Hamid Khorsand

{"title":"Effect of bonding temperature on microstructure and mechanical properties of TLP-bonded Ti-6Al-4V/Inconel 718 joints using BNi2/Cu interlayer","authors":"Sepehr Pourmorad Kaleybar, Hamid Khorsand","doi":"10.1016/j.jajp.2025.100328","DOIUrl":"10.1016/j.jajp.2025.100328","url":null,"abstract":"<div><div>The joining of Ti-6Al-4 V to Inconel 718 is notable in industries. This research studied the effect of bonding temperatures (800, 850, 900, 950, and 1000 °C) on properties of Ti-6Al-4 V and Inconel 718 joints using BNi2/Cu interlayer in TLP bonding. The samples were analyzed for their microstructure and mechanical properties using a range of techniques: optical microscopy (OM), scanning electron microscope (SEM), X-ray diffraction (XRD), microhardness testing, shear strength evaluation, and high-temperature shear tests. Microstructural analysis indicated the formation of intermetallic compounds like Ti2Cu, Ti<sub>2</sub>Ni, NiTi, and Ni<sub>3</sub>Ti within the diffusion-affected zone (DAZ) and solidification zone (SZ) of the TLP-bonded samples. The results demonstrated that temperature had a profound impact on the microstructure of the TLP-bonded samples; specifically, the width of the solidification zone increased as the TLP temperature rose. Moreover, there was an optimal temperature for achieving superior mechanical properties. For instance, a shear strength of 399.75 MPa was achieved at 950 °C as the highest shear strength value. The findings also revealed that both lower (800 °C) and higher (1000 °C) bonding temperatures led to decreased shear strength due to the presence of porosities and cracks. The high-temperature testing showed suitable mechanical properties for elevated temperatures.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100328"},"PeriodicalIF":3.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144597558","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

The role of pressure in improving the properties of friction welded aluminum–copper dissimilar joints 压力对改善铝铜异种摩擦焊接接头性能的作用

IF 3.8

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-07-06 DOI: 10.1016/j.jajp.2025.100329

Riyan Ariyansah , Aditya Rio Prabowo , Nurul Muhayat , Bagus Anang Nugroho , Triyono

{"title":"The role of pressure in improving the properties of friction welded aluminum–copper dissimilar joints","authors":"Riyan Ariyansah , Aditya Rio Prabowo , Nurul Muhayat , Bagus Anang Nugroho , Triyono","doi":"10.1016/j.jajp.2025.100329","DOIUrl":"10.1016/j.jajp.2025.100329","url":null,"abstract":"<div><div>Rotary Friction Welding (RFW) is a solid-state joining technique well-suited for dissimilar metals such as aluminum and copper, despite challenges related to differences in electrochemical potential, thermal conductivity, and mechanical properties. While previous studies have explored the influence of process parameters on joint quality, limited attention has been given to the systematic optimization of axial pressure in relation to intermetallic compound (IMC) formation and mechanical performance. This study investigates the effect of varying axial pressures (20, 30, and 40 kg/cm²) on the microstructure and mechanical behavior of rotary friction-welded joints between 6061 aluminum and pure copper. The welding parameters, including rotational speed (1300 rpm), friction time (45 s), and pressure time (30 s), were held constant to isolate the effect of pressure. Macro and microstructural analyses, along with hardness and tensile testing, were conducted. The results show that axial pressure significantly influences the morphology and thickness of IMCs formed in the central weld zone (CWZ), thereby affecting joint strength. Notably, a friction pressure of 20 kg/cm² was found to be optimal, yielding the highest combination of hardness and tensile strength compared to other specimens, thus demonstrating a good balance between metallurgical bonding and mechanical performance. Compared to similar studies, this work demonstrates improved mechanical performance at a lower IMC thickness, highlighting the importance of pressure optimization in balancing metallurgical bonding with mechanical integrity. The novelty of this research lies in identifying the critical role of pressure in tailoring IMC development and optimizing joint strength for aluminum-copper dissimilar metal welding.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100329"},"PeriodicalIF":3.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605073","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

Tailoring microstructure and interface integrity in Ti–316L dissimilar keyhole laser welding using controlled 3d magnetic field stimulation 利用可控三维磁场刺激调整Ti-316L异种锁孔激光焊接的微观结构和界面完整性

IF 4

Journal of Advanced Joining Processes Pub Date : 2025-12-01 Epub Date: 2025-09-30 DOI: 10.1016/j.jajp.2025.100352

Pinku Yadav , Simone Gervasoni , David Sargent , Patrik Hoffmann , Sergey Shevchik

{"title":"Tailoring microstructure and interface integrity in Ti–316L dissimilar keyhole laser welding using controlled 3d magnetic field stimulation","authors":"Pinku Yadav , Simone Gervasoni , David Sargent , Patrik Hoffmann , Sergey Shevchik","doi":"10.1016/j.jajp.2025.100352","DOIUrl":"10.1016/j.jajp.2025.100352","url":null,"abstract":"<div><div>This study investigates the influence of externally applied magnetic fields—both alternating and rotating—on the microstructural evolution and interface integrity of laser-welded dissimilar joints between titanium and 316 L stainless steel. A fiber laser system was employed to perform keyhole-mode lap welding, with various magnetic field orientations introduced to actively manipulate the melt pool dynamics. Alternating fields (Bx, By, Bz) promoted grain refinement (reducing average grain size from 51.8 ± 4.1 µm to 36.2 ± 3.1 µm) and enhanced recrystallization (increasing the recrystallized fraction to ∼0.69), resulting in a finer microstructure and more discrete intermetallic compound (IMC) formation at the Ti–316 L interface. In contrast, rotating magnetic fields (Bxy, Byz, Bxz) encouraged coarser grain growth (increasing average grain size up to 80.1 ± 4.5 µm) and increased the presence of unrecrystallized regions (up to 0.484 fraction) due to stabilized melt flow and slower cooling rates. These conditions facilitated deeper interdiffusion and led to thicker, more continuous IMC layers, correlating with a peak microhardness of 576 ± 8 HV, potentially compromising joint integrity. The findings demonstrate that precise control of magnetic field configuration during laser processing offers a powerful tool to tailor interfacial microstructures and minimize brittle phase formation. This approach provides new opportunities to enhance the performance and reliability of dissimilar metal joints in critical structural applications.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"12 ","pages":"Article 100352"},"PeriodicalIF":4.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145219387","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