Journal of Advanced Joining Processes最新文献_第10页

Electron beam welding of Nb-8Hf-2Ti high temperature alloy to Ni dissimilar joint: The microstructural analysis, mechanical properties, and fracture characterization Nb-8Hf-2Ti 高温合金与镍异种接头的电子束焊接：微观结构分析、力学性能和断裂表征

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-11-01 DOI: 10.1016/j.jajp.2023.100171

Ali Hajitabar, Homam Naffakh-Moosavy

{"title":"Electron beam welding of Nb-8Hf-2Ti high temperature alloy to Ni dissimilar joint: The microstructural analysis, mechanical properties, and fracture characterization","authors":"Ali Hajitabar, Homam Naffakh-Moosavy","doi":"10.1016/j.jajp.2023.100171","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100171","url":null,"abstract":"<div><p>In this work, the electron-beam welding (EBW) behavior of Ni/C-103 Nb-based refractory alloy was investigated, in terms of fusion-zone characteristics, texture evolution, mechanical properties, and joint efficiency. Compared to Nb, the higher concentration of Ni in weld zone indicated that the Ni side participates more in welding than the C-103 one. A continuous intermetallic layer was formed at the joint/C-103 interface composed of NbNi<sub>3</sub>, Nb<sub>7</sub>Ni<sub>6</sub> and Hf<sub>3</sub>Ni<sub>7</sub> phases. Continuous curved-shaped layers composed of columnar NbNi<sub>3</sub> and eutectic Nb<sub>7</sub>Ni<sub>6</sub>+NbNi<sub>3</sub> phases were also observed in the central and lower regions of the weld. These have been peeled off from the C-103 upper walls lateral to the weld and directed to the bottom of the weld pool due to the Marangoni flow. Solidification microcracks internal to the continuous intermetallic layers are also initiated and grown at the final stage of eutectic Nb<sub>7</sub>Ni<sub>6</sub>+NbNi<sub>3</sub> phase formation leading to the brittle cleavage failure within this layer. The average microhardness of the joint was measured as 562 HV, which was higher than the base metals due to the presence of intermetallic compounds. Tensile strength of the joint was measured as 119.5 MPa, which is approximately one third of the value for the bead on plate weld of C-103 plate using EBW method with a tensile strength of 317.5 MPa. Nb<sub>7</sub>Ni<sub>6</sub> and NbNi<sub>3</sub> intermetallics were dominant phases in the fracture area.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S266633092300033X/pdfft?md5=0177ccf77fc40f7fb1849f55feb210e1&pid=1-s2.0-S266633092300033X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138558995","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}

引用次数: 0

Solid-state cold spray welding: Evaluation and future direction 固态冷喷焊的评价与发展方向

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-11-01 DOI: 10.1016/j.jajp.2023.100162

Muhammad Zia ud din Urf Umer, Ahmed A. Tiamiyu

{"title":"Solid-state cold spray welding: Evaluation and future direction","authors":"Muhammad Zia ud din Urf Umer, Ahmed A. Tiamiyu","doi":"10.1016/j.jajp.2023.100162","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100162","url":null,"abstract":"<div><p>Welding is an important manufacturing process for joining complex parts. Despite their widespread use, there exist some drawbacks in the existing liquid-state (e.g., formation of undesirable heat-affected zones around weld area) and solid-state (e.g., high equipment and tooling costs, low production rates, and difficulty in joining intricate geometries) methods. These limitations continually spur the search for new joining processes to improve existing welding methods or develop new ones that circumvent these limitations. To provide a “greener” and low-cost alternative to the traditional welding processes that often produce “soft” heat affected zones (HAZs), we develop and evaluate the expansion of cold spray process—a solid-state high-velocity particle deposition process—to solid-state welding, a process we term <em>cold spray welding</em> (CSW). Using well-defined processing parameters, we cold spray welded (CSWed) AA 6061-T651 plate and compared the results with Tungsten inert gas (TIG) welded counterpart. Although TIG-welded samples exhibit higher tensile properties than CSWed samples (at least based on the CS processing parameters used in this study), our findings show that CSW indeed circumvents major drawbacks in traditional welding processes, including negligible microstructural alterations and the inhibition of deleterious phase transformation and suppression of deleterious HAZ. The examination of CSWed parts reveals low yield strength is connected to ubiquitous microvoids that are formed due to lack of metallurgical bonding; these microvoids act as microcrack initiation sites. We proceed to establish a failure mechanism in the CSWed part to provide direction for future optimization.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330923000249/pdfft?md5=b5ecda08da90fa0e2a17ef6a162e8eee&pid=1-s2.0-S2666330923000249-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72249459","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}

引用次数: 0

Joining of hybrid busbars for E-Mobility: An economic and environmental study 电动汽车混合母线连接的经济与环境研究

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-10-13 DOI: 10.1016/j.jajp.2023.100159

João PM Pragana , Miguel ST Sapage , Rui FV Sampaio , Ivo MF Bragança , Ines Ribeiro , Carlos MA Silva , Paulo AF Martins

{"title":"Joining of hybrid busbars for E-Mobility: An economic and environmental study","authors":"João PM Pragana , Miguel ST Sapage , Rui FV Sampaio , Ivo MF Bragança , Ines Ribeiro , Carlos MA Silva , Paulo AF Martins","doi":"10.1016/j.jajp.2023.100159","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100159","url":null,"abstract":"<div><p>This paper presents a model to evaluate and analyze the costs of joining hybrid (copper-aluminum) busbars when different production processes are deployed. The process-based cost model (PBCM) is built upon the subdivision of the production cycle in three different stages related with the fabrication or purchase of auxiliary joining elements, preparation of the individual copper and aluminum conductors, and final joining of the hybrid busbars. The total cost per hybrid busbar is obtained by converting the major physical, human, and financial resources associated with the production cycle into itemized costs that make use of the expenses in materials, labor working hours, number and usage time of machines and tools, among other production costs. Application of the PBCM is illustrated with three different joining processes and enriched with a life cycle assessment (LCA) focused on the environmental performance of hybrid busbars throughout its fabrication, service use and end of life. The combined economic and environmental sustainability analysis of joining hybrid busbars allows concluding that despite conventional fastening being the cheaper process it has the highest environmental impact due to the use of bolts, nuts and washers made from galvanized medium carbon steel. Injection lap riveting arises to be the most well-balanced process in terms of production cost and environmental impact.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698732","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: 2

Structure formation in pin-like joining using vibration welding technology 采用振动焊接技术在针状连接中形成结构

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-10-01 DOI: 10.1016/j.jajp.2023.100158

Michael Wolf, Dietmar Drummer

引用次数: 1

Influence of welding sequence and external restraint on buckling distortion in thin-plate arc-welded joints 焊接顺序和外部约束对薄板电弧焊接头屈曲变形的影响

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-09-26 DOI: 10.1016/j.jajp.2023.100157

Jiamin Sun, Klaus Dilger

{"title":"Influence of welding sequence and external restraint on buckling distortion in thin-plate arc-welded joints","authors":"Jiamin Sun, Klaus Dilger","doi":"10.1016/j.jajp.2023.100157","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100157","url":null,"abstract":"<div><p>Buckling distortion as a troublesome engineering issue is easily generated in thin-plate arc-welded components (generally less than 4 mm in thickness). This study aims to clarify the impact of welding sequence and external restraint on out-of-plane deformation in thin plates for finding out an effective and practical strategy for the prevention of welding-induced buckling distortion. The experimental method was utilized for investigation here. The experimental results reveal that the external restraint cannot prevent buckling distortion in the thin-walled weldments, while it can significantly mitigate the amount of transverse (about 4 mm here) but not longitudinal bending. The welding sequence method can prevent buckling distortion, but it cannot eliminate the transverse bending induced by the non-uniform temperature field in the thin-plate thickness direction. In the present work, the transverse bending in the symmetrical welding is the lowest (about 4 mm), while that in the back-step welding is the largest (around 7 mm). Furthermore, symmetrical welding and continuous welding introduce the lowest (about 1 mm) and highest (about 4 mm) longitudinal bending, respectively. Both external restraint and welding sequence could affect the buckling distortion mode. For the thin-plate arc-welded components, symmetrical welding combined with external restraint is a very effective strategy for the prevention of buckling distortion.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49698575","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

Robotic friction stir welding in lightweight battery assembly of extrusion-cast aluminium alloys 挤压铸造铝合金轻量化电池组件的机器人搅拌摩擦焊接

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-09-22 DOI: 10.1016/j.jajp.2023.100156

Vivek Patel , Hendrik Wouters , Amir Baghdadchi , Jeroen De Backer , Mattias Igestrand , Saeed Azimi , Joel Andersson

{"title":"Robotic friction stir welding in lightweight battery assembly of extrusion-cast aluminium alloys","authors":"Vivek Patel , Hendrik Wouters , Amir Baghdadchi , Jeroen De Backer , Mattias Igestrand , Saeed Azimi , Joel Andersson","doi":"10.1016/j.jajp.2023.100156","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100156","url":null,"abstract":"<div><p>The present study focuses on developing lightweight assembly of two different aluminium alloys extruded and high pressure die cast (HPDC) for battery frame assembly in BEV. The goal is to produce defect-free welds in lap configuration with smooth surface finish. Stationary shoulder friction stir welding (SSFSW) was employed with welding speeds of 3–15 mm/s. EBSD analysis revealed two groups of grains in the stir zone (SZ) due to dynamic recrystallization. Moreover, the grain size of the SZ significantly decreased compared to both alloys. The cast alloy contains large iron particles, and that were broken by the rotating probe, and the stirred material consisted of fine dispersed precipitates. Tensile-shear test found the fracture location at the hook area near to cast, and a model representing fracture behavior is also discussed. With increasing welding speed from 3 to 5 mm/s, the tensile strength found ∼95 and ∼100 MPa, respectively without any significance difference in the fracture behavior and location. Overall, this study provides valuable insights such as materials mixing, grain refinement, and joint strength in dissimilar joining using SSFSW. The findings could be useful in developing optimized welding parameters and improving the overall quality and productivity of the SSFSW process for battery pack assembly in BEV.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49900675","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

Double-flush riveting by punching and compression 采用冲孔和压缩双重平头铆接

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-09-07 DOI: 10.1016/j.jajp.2023.100155

R.F.V. Sampaio , P. Larue , J.P.M. Pragana , I.M.F. Bragança , C.M.A. Silva , P.A.F. Martins

引用次数: 0

Laser butt welding of thin stainless steel 316L sheets in asymmetric configurations: A numerical study 316L不锈钢薄板不对称结构激光对接焊的数值研究

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-08-19 DOI: 10.1016/j.jajp.2023.100154

Amin Ebrahimi, Marcel J.M. Hermans

{"title":"Laser butt welding of thin stainless steel 316L sheets in asymmetric configurations: A numerical study","authors":"Amin Ebrahimi, Marcel J.M. Hermans","doi":"10.1016/j.jajp.2023.100154","DOIUrl":"10.1016/j.jajp.2023.100154","url":null,"abstract":"<div><p>Laser butt welding of thin metal sheets is a widely used fusion-based joining technique in industrial manufacturing. A comprehensive understanding of the complex transport phenomena during the welding process is essential for achieving high-quality welds. In the present work, high-fidelity numerical simulations are employed to investigate the influence of various symmetric and asymmetric welding configurations on the melt-pool behaviour in conduction-mode laser butt welding of stainless steel sheets. The analysis focuses on the effects of laser power density, heat source misplacement and different welding scenarios, including plates with a root gap, high-low mismatches, and dissimilar thicknesses, on the molten metal flow and heat transfer. The results show that advection is the dominant mechanism for energy transfer in the melt pool, and its contribution increases with higher laser power. The non-uniform temperature distribution over the melt-pool surface induces Marangoni shear forces, driving the flow of molten metal and leading to the formation of vortices and periodic flow oscillations within the pool. The effects of various types of asymmetries on the thermal and molten metal flow fields, as well as the process stability, are thoroughly examined and compared with symmetrical welding configurations. These comprehensive simulations provide valuable insights into the fluid flow dynamics and thermal field evolution during laser butt welding of thin metal sheets. The knowledge gained from this study can facilitate process optimisation and guide the improvement of weld quality in practical applications.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42905356","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: 1

Effect of natural aging on the tensile properties and the toughness of friction stir welds of 2024-T3 aluminum alloy 自然时效对2024-T3铝合金搅拌摩擦焊缝拉伸性能和韧性的影响

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-07-21 DOI: 10.1016/j.jajp.2023.100153

Abderrahmane Djili , Boudjema Bezzazi , Nadjet Zioui , Mohamed Haboussi

引用次数: 0

To measure is to know: Evaluating indirect measurement techniques for observing the damage tolerance behaviour of spot welded thermoplastic composites 测量即知:评价观察点焊热塑性复合材料损伤容限行为的间接测量技术

IF 4.1

Journal of Advanced Joining Processes Pub Date : 2023-07-20 DOI: 10.1016/j.jajp.2023.100152

Eva T.B. Smeets, Calvin D. Rans, Saullo G.P. Castro, Irene F. Villegas

{"title":"To measure is to know: Evaluating indirect measurement techniques for observing the damage tolerance behaviour of spot welded thermoplastic composites","authors":"Eva T.B. Smeets, Calvin D. Rans, Saullo G.P. Castro, Irene F. Villegas","doi":"10.1016/j.jajp.2023.100152","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100152","url":null,"abstract":"<div><p>In thermoplastic composite joints with a circular ultrasonic spot weld, the damage growth is located at the interface between the joined components. This means that any damage in these joints is invisible from the outside. This experimental study compares three different in-situ methods to measure the damage growth indirectly. The motivation lies in the potential benefits of using multi-spot welded joints for increased damage tolerance and the need to prove the damage arresting and damage progression behaviour for certification. The current study focused on measuring the damage in single-spot welded Single Lap Shear (SLS) joints during fatigue test with the global specimen compliance, the local out-of-plane displacement and the local strain on the surface. Digital Image Correlation (DIC) measurements were used to obtain the local quantities. The results showed that the local quantities are better suited to obtain detailed information on the damage state. The local surface strain showed more distinct features that facilitate the recognition of damage locations. The benefits and challenges of all methods are discussed as well as the difference in the level of detail, generalization and the prior knowledge necessary to obtain the damage state.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49900674","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