Journal of Advanced Joining Processes最新文献

{"title":"Characterization of friction stir welded Al-4Cu-Mg alloy / Al-16Si-4Cu-10SiC composite joint","authors":"Hamed Jamshidi Aval ,&nbsp;Ivan Galvão","doi":"10.1016/j.jajp.2024.100192","DOIUrl":"10.1016/j.jajp.2024.100192","url":null,"abstract":"<div><p>This study investigated the tool's rotational speed effect during dissimilar friction stir welding of A390–10 wt.% SiC composite-AA2024 aluminum alloy on microstructure, mechanical properties, and corrosion resistance. The results show that the tunnel defect is created on the advancing side at low rotational speeds of 400 and 600 rpm due to insufficient material flow and a high rotational speed of 1200 rpm due to turbulent material flow in the stir zone. Finely equiaxed recrystallized grains are formed in the stir zone under a high plastic strain rate and particle-stimulated nucleation mechanism. The minimum hardness occurs in the TMAZ of the AA2024 aluminum alloy side, and by increasing the rotational speed from 800 to 1000 rpm, the average hardness in the stir zone decreases from 146.06±8.67 to 137.86±3.98 HV0.1. Also, by increasing the rotational speed from 800 to 1000 rpm, the stir zone's yield strength and ultimate tensile strength decrease by 4.9 and 5.2%, respectively. With the increased rotational speed from 800 to 1000 rpm, corrosion current increases from 0.0213 to 0.0225 mA.cm⁻², and corrosion resistance decreases by 17 %. After friction stir welding with a rotational speed of 800 rpm and traverse speed of 20 mm/min, the corrosion resistance of the joint increases and decreases compared to the composite base metal and AA2024 aluminum alloy base metal, respectively.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000098/pdfft?md5=40a3ac18d3bee75dce6b3eb86bd820ce&pid=1-s2.0-S2666330924000098-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139540485","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":"Effects of alignment discrepancies on the weld quality in friction stir welding","authors":"F. Vieltorf,&nbsp;M. Wolfrum,&nbsp;A. Zens,&nbsp;D.L. Wenzler,&nbsp;M.E. Sigl,&nbsp;M.F. Zaeh","doi":"10.1016/j.jajp.2024.100190","DOIUrl":"10.1016/j.jajp.2024.100190","url":null,"abstract":"<div><p>Friction stir welding is a modern welding technology with which the joining partners are welded in the solid state. The technology is often employed in the aerospace industry due to the excellent mechanical properties of the weld. Process disturbances can cause irregularities in the weld quality. It is still a challenge to avoid part fit-up deviations as a result of part misalignments and tolerances. Several publications have investigated the effect of alignment discrepancies on the weld quality, for example, by introducing a gap between parts, a tool offset, or linearly misaligned sheets. Depending on the application, the effects of simultaneously occurring alignment discrepancies on the weld quality could be critical. In this work, three alignment discrepancies were investigated (gap, linearly misaligned sheets, tool offset). The weld quality was determined using tensile tests. Process data such as the process forces and the spindle torque were also measured during the welding experiments. The results showed that each of the alignment discrepancies had a negative impact on the weld quality. The simultaneous occurrence resulted in an even lower weld quality. Some alignment discrepancies can probably be detected in the future using process data (e.g., the lateral force).</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000074/pdfft?md5=734fe354cffca0cd48606a5cf6bcfc50&pid=1-s2.0-S2666330924000074-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139633570","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":"Stud and wire arc additive manufacturing—Development of a combined process for the high-productivity additive manufacturing of large-scale lattice structures","authors":"F. Riegger,&nbsp;D.L. Wenzler,&nbsp;M.F. Zaeh","doi":"10.1016/j.jajp.2024.100189","DOIUrl":"10.1016/j.jajp.2024.100189","url":null,"abstract":"<div><p>Metallic large-scale freeform lattice structures can be manufactured by wire arc additive manufacturing (WAAM). These structures are especially interesting for applications in civil engineering, such as lightweight structural elements and reinforcement structures. One promising approach for the efficient additive manufacturing of lattice structures is extending WAAM through drawn-arc stud welding (DASW). In this innovative combined process, called <em>stud and wire arc additive manufacturing</em> (SWAAM), WAAM is used for producing geometrically complex lattice segments (e.g., nodes) and DASW for straight segments. This paper presents the proof of concept showing the feasibility of this novel approach with a robotic test setup. Specimens consisting of bars with a diameter of 8 mm were produced with WAAM and SWAAM. The temperature development in the samples during manufacturing and their production time were measured. WAAM resulted for the first layer in a maximum temperature of 343 °C at a distance of 10 mm to the weld zone, while SWAAM showed 213 °C. The production time of a given test geometry was reduced by 57.7 % for the hybrid process compared to a pure WAAM manufacturing. This proves that reducing the welding operations by using studs decreases the heat input, lowers the process temperatures, and increases the production rate.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000062/pdfft?md5=2b26305eb9d6bb13932c406ad2b3fb94&pid=1-s2.0-S2666330924000062-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139636802","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":"An investigation on plasma-MIG hybrid welding process of thick plate aluminum","authors":"Toshifumi Yuji ,&nbsp;Shinichi Tashiro ,&nbsp;Hiroyuki Kinoshita ,&nbsp;Kentaro Yasui ,&nbsp;Toshio Bouno ,&nbsp;Wu Ziang ,&nbsp;Wu Dongsheng ,&nbsp;Wittawat Poonthong ,&nbsp;Syahril Azli Abdul Rahman ,&nbsp;Sarizam Bin Mamat ,&nbsp;Manabu Tanaka","doi":"10.1016/j.jajp.2024.100188","DOIUrl":"10.1016/j.jajp.2024.100188","url":null,"abstract":"<div><p>Plasma-Metal Inert Gas (MIG) hybrid welding was employed to carry out bead on plate welding of an aluminum alloy A5052. The plasma arc was ignited to form a keyhole, and a series of welding systems were developed starting with MIG welding. The convective patterns within the weld pool were meticulously analyzed. In addition, we conducted experimental observations of the flow inside and on the surface of the pool, and we were able to visualize the flow in some areas. The results indicated that the plasma welding side formed a pool that seamlessly integrated the plasma side and the MIG side. At the same time, we observed the formation of a flow pool that integrates both plasma and MIG sides, affecting the formation and behavior of the weld pool. This study aims to provide a nuanced understanding of flow dynamics across the entire pool. This approach is geared towards refining the intricacies of weld pool dynamics for the advancement of welding technologies.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000050/pdfft?md5=f8f0f80220995319719061ac656a621e&pid=1-s2.0-S2666330924000050-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139638462","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":"Preliminary study on effect of inertia and continuous friction welding on mechanical properties of SS 316-Zn alloys friction welded joint","authors":"Hendery Dahlan ,&nbsp;Ahmad Kafrawi Nasution ,&nbsp;Meifal Rusli","doi":"10.1016/j.jajp.2024.100187","DOIUrl":"10.1016/j.jajp.2024.100187","url":null,"abstract":"<div><p>The effect of inertial friction welding and continuous drive friction welding in joining SS 316 with Zn alloy is discussed in this article. Scanning electron microscopy was utilized to investigate the microstructure of the welding interaction. Energy-dispersive spectroscopy was utilized to identify the chemical composition of the element distribution at the interface. The findings reveal that a continuous drive friction welding process may produce SS 316 welded joints with Zn alloy. With a friction time of 35 s, the joint's tensile strength may reach 60 MPa. During the tensile test, all friction-welded samples failed at the interface. The fracture surface shows an almost flat surface and is not fibrous or brittle. Meanwhile, a new reaction layer from the intermetallic compound layer is not formed at the joint interface. The decrease in hardness in Zn alloys is due to the thermal softening effect caused by continuous heat from friction.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000049/pdfft?md5=571af3bb8bfe329bd63bee8b01d9c490&pid=1-s2.0-S2666330924000049-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139457374","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":"Investigating laser intensity profile and light scattering effects in the transmission laser welding process of 3D printed parts","authors":"Thi-Ha-Xuyen Nguyen,&nbsp;André Chateau Akué Asséko,&nbsp;Anh-Duc Le,&nbsp;Benoît Cosson","doi":"10.1016/j.jajp.2024.100186","DOIUrl":"https://doi.org/10.1016/j.jajp.2024.100186","url":null,"abstract":"<div><p>Transmission Laser Welding (TLW) is a promising technique for joining thermoplastic and composite components, especially those produced through additive manufacturing or 3D printing processes. However, achieving optimal welding quality and efficiency in TLW of 3D printed parts is challenging due to the presence of highly heterogeneous and anisotropic materials, which introduce light scattering and absorption issues. Light scattering is caused by the refraction phenomenon. These phenomena significantly impact the laser intensity profile within the materials and at the welding interface, thereby affecting the energy required for successful welding and the mechanical strength of the final assembly. In this paper, we present an in-depth investigation into the laser intensity profile and the effects of laser-matter interaction on the welding of 3D-printed parts. Our approach combines experimental measurements using a heat flux sensor and an analytical inverse model to measure the laser intensity distribution within the materials at the welding interface. The results obtained from the experimental measurements and numerical identification are compared and analyzed, providing insights into the laser intensity profile in TLW of 3D printed parts.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000037/pdfft?md5=974de51d8eb6fbccf951a7686de87445&pid=1-s2.0-S2666330924000037-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139433407","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":"Investigations to improve the tool life during thermomechanical and incremental forming of steel auxiliary joining elements","authors":"T Borgert,&nbsp;AB Nordieker,&nbsp;E Wiens,&nbsp;W Homberg","doi":"10.1016/j.jajp.2024.100185","DOIUrl":"https://doi.org/10.1016/j.jajp.2024.100185","url":null,"abstract":"<div><p>Modern vehicles as well as structures consist more and more often of a multi material mix. In addition to the use of light materials (e. g. aluminium) to optimise lightweight construction potential, higher strength alloys are being used more and more frequently. With the different material combinations, the requirements for the joining technology also increase. Thus (due to restrictions in the area of thermal joining processes) the joining of different material combinations is often realised by mechanical joining technology. Even though different joining tasks (dissimilar material or sheet thicknesses) can be solved by mechanical joining technology in general, it is often required to switch between appropriate auxiliary joining elements and even joining technique. To adapt the auxiliary elements to the individual requirements of each joint an innovative manufacturing process of customisable auxiliary joining elements has been developed. The use of the incremental, thermomechanical manufacturing process called friction-spinning for the manufacturing of adaptive auxiliary joining elements enables to individualise each element for the subsequent joining process. However, this advantage comes at the cost of a high mechanical and thermal loads on the forming tools. These loads also depend on the process design (trajectory, feed, rotational speed) and have to be controlled in order to improve the tool life. For a more profound process knowledge and to better understand the corellation of the individual process variables, a series of tests with varying process parameters were carried out in a partial factorial design of experiments. The results show not only an possible improvement in the tool life, but also the required process design for a higher reproducibility of the auxiliary joining element geometry and the possibility of positively influencing the geometry to achieve a force-closure of the joint.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000025/pdfft?md5=5e04eb0f96de34eb5997f7604d02d3c9&pid=1-s2.0-S2666330924000025-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139433406","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":"A novel joining technology for metal and polymer sheets","authors":"MM Kasaei ,&nbsp;RJC Carbas ,&nbsp;EAS Marques ,&nbsp;LFM da Silva","doi":"10.1016/j.jajp.2024.100184","DOIUrl":"10.1016/j.jajp.2024.100184","url":null,"abstract":"<div><p>This paper introduces a novel joining process for producing hybrid metal-polymer joints. The process, called hole hemming, involves deforming the metal sheet to establish a mechanical interlock with the polymer sheet, requiring neither heating nor auxiliary elements. The applicability of this process is tested for joining aluminum and polycarbonate (PC) sheets. Initially, an analytical design method is presented to achieve a connection without failure and with a mechanical interlock. Subsequently, the accuracy of the predictions is assessed through experiments and finite element simulations, employing the modified Mohr-Coulomb criterion for the prediction of ductile damage. Additionally, a new design for hole-hemmed joints, involving the incorporation of branches in the hole of the outer sheet, is introduced to expand the process window of this novel joining technology. Finally, the mechanical behavior of four different types of hybrid hole-hemmed joints (HHH joints) are evaluated through single-lap shear tests. The results show that the hole hemming process can successfully join AA6082-T4 and PC sheets, validating the proposed designs and ideas. The new hybrid joints demonstrate a maximum force and displacement of 1.6 kN and 12.9 mm, respectively, in the shear test, indicating significant potential of the proposed technology for joining metal and polymer sheets.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330924000013/pdfft?md5=2ae40f26653a888df822a286384f3aa7&pid=1-s2.0-S2666330924000013-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139393714","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":"Investigation of the influence of pulse parameters on the resulting weld seam quality in pulsed electron beam welding of AW 6061","authors":"M. Troise,&nbsp;T. Krichel,&nbsp;S. Olschok,&nbsp;U. Reisgen","doi":"10.1016/j.jajp.2023.100183","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100183","url":null,"abstract":"<div><p>Utilizing pulsed lasers in favor of a continuous wave in laser beam welding is a well-established method to achieve higher process efficiency and reduce heat input into the workpiece, which is especially useful for thin-walled workpieces (Steen, 2005). In addition, pulsed processes have shown to lead to smaller grain sizes due to higher cooling rates, which can lead to a reduction in hot cracks in some aluminum alloys (Beiranvand et al., 2019). Since an electron beam can also be pulsed, a technique industrially utilized in electron beam drilling, the same principles apply (Schultz, 2000). However, pulsed electron beam welding is rarely used in industrial welding applications due to the risk of pores, spiking and sputtering resulting from the pulsed process dynamic, especially in the deep welding regime (Kautz, 1991). This study aims to develop a pulsed electron beam welding process for AW 6061 sheet metal, which is susceptible to hot cracking. The influence of the welding and pulse parameters, as well as the combination of a pulsed beam with high frequency beam oscillation is discussed. Furthermore, suitable welding parameters for pulsed electron beam welding of AW 6061 are developed, and the increased efficiency of pulsed welding is shown by comparison to continuous welds.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330923000456/pdfft?md5=a22c4bb526a1baafdf994c889d73e8c4&pid=1-s2.0-S2666330923000456-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139107648","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":"In situ localised post-weld heat treatment with electron beam welding of S690QL steel","authors":"Raghawendra Sisodia ,&nbsp;Marek Weglowski ,&nbsp;Piotr Sliwinski","doi":"10.1016/j.jajp.2023.100182","DOIUrl":"https://doi.org/10.1016/j.jajp.2023.100182","url":null,"abstract":"<div><p>The objective of this research is to assess the influence of in-situ localised electron beam post-weld heat treatment (LEB-PWHT) on the microstructure and mechanical properties of high-strength S690QL steel welded joints utilising highly sophisticated electron beam welding (EBW) technology. Although EBW is well-known for creating high-quality welds, the addition of the novel LEB-PWHT technique may significantly improve the characteristics of the welded joints. To systematically analyse the impacts of PWHT on the welded joints, the study employs microstructural analysis like optical microscopy and mechanical properties like microhardness testing, bending, tensile, and impact tests. Furthermore, tensile fractography analysed by scanning electron microscopy (SEM) to provide detailed insights into the fracture behaviour of the welded joints. The results show that the in-situ PWHT approach improves the microstructure and mechanical characteristics of the welded joints, such as a lower hardness peak in the heat affected zone (HAZ), increased tensile strength (5%), and improved toughness by 7 times. LEB-PWHT fractured surface revealed smaller, more sharply defined dimples and micro-voids. These results suggest that in-situ PWHT is an attractive option for improving the quality and performance of welds in a wide range of applications incorporating S690QL steel.</p></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2666330923000444/pdfft?md5=cd0b6577fdb63741c5f48c82dd12f702&pid=1-s2.0-S2666330923000444-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139109264","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}