Welding in the World最新文献_第6页

Using dynamic resistance to predict electrode surface degradation in resistance spot welding of 5182 aluminum alloy

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-19 DOI: 10.1007/s40194-024-01872-9

A. Nikitin, D. Turabov, E. Ermilova, A. Evdokimov, R. Ossenbrink, H. Seidlitz

引用次数: 0

Effect of process parameters and orientation on the tensile and low cycle fatigue properties of low-carbon steel builds manufactured by directed energy deposition-gas metal arc process

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-19 DOI: 10.1007/s40194-024-01873-8

Atanu Das, Abhishek Kumar, Sumanta Bagui, Chandra Veer Singh, Nimai Haldar, Sanjay Vajpai, Vikas Chandra Srivastava, Gopi Kishor Mandal

{"title":"Effect of process parameters and orientation on the tensile and low cycle fatigue properties of low-carbon steel builds manufactured by directed energy deposition-gas metal arc process","authors":"Atanu Das, Abhishek Kumar, Sumanta Bagui, Chandra Veer Singh, Nimai Haldar, Sanjay Vajpai, Vikas Chandra Srivastava, Gopi Kishor Mandal","doi":"10.1007/s40194-024-01873-8","DOIUrl":"10.1007/s40194-024-01873-8","url":null,"abstract":"<div><p>Directed energy deposition-gas metal arc (DED-GMA) process has recently gained considerable attention due to its inherent capability to produce large metallic components, with moderate complexity, at substantially high deposition rate compared to other additive manufacturing techniques. The effect of wire feed rate, energy input per unit length and orientation on the tensile and low cycle fatigue behaviour of multi-layer builds of low-carbon steel ER70S-6 is systematically studied in the present work. In addition, a detailed microstructural characterization is also carried out for better understanding of the microstructural evolution during deposition and its influence on the mechanical behaviour of the build. In general, insignificant variation of the tensile properties of DED-GMA specimens at different orientations signifies an overall isotropic behaviour. The vertically oriented samples, printed at highest energy input, show superior fatigue life. The number of cycles to failure, for the vertically oriented samples, at highest wire feed rate of 10 m/min and deposition travel speed of 1 m/min, are found to be around 718, 450 and 366 at strain amplitudes of ± 0.6, ± 0.8 and ± 1.0%, respectively. It is envisaged that the control of energy input by adjusting wire feed rate and deposition travel speed is crucial to improve the tensile and fatigue properties of the build.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 4","pages":"957 - 971"},"PeriodicalIF":2.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143580988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unsupervised machine learning for local stress identification in fatigue analysis of welded joints 无监督机器学习用于焊接接头疲劳分析中的局部应力识别

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-19 DOI: 10.1007/s40194-024-01868-5

Mehdi Ghanadi, Manoranjan Kumar, Per-Olof Danielsson, Gustav Hultgren, Zuheir Barsoum

引用次数: 0

Influence of rotational speed on interfacial microstructure and tensile properties of friction welded Al-SS pipe joints

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-19 DOI: 10.1007/s40194-024-01870-x

Hardik D. Vyas, Vishvesh Badheka

{"title":"Influence of rotational speed on interfacial microstructure and tensile properties of friction welded Al-SS pipe joints","authors":"Hardik D. Vyas, Vishvesh Badheka","doi":"10.1007/s40194-024-01870-x","DOIUrl":"10.1007/s40194-024-01870-x","url":null,"abstract":"<div><p>The present study focuses on friction welded joints between Al6063-T6 and SS304L pipes with different compositions that were examined to understand how rotational speed affected the evolution of the interfacial microstructure. A comprehensive study was done on the various microstructures, grain boundaries, kernel angle misorientation, and joint strength. Under the influence of rotational speed, there was a change in the metal flow, microstructures, and grain morphology at the welded area. However, the microstructure of Al6063-T6 altered from elongated to equiaxed grains due to dynamic recrystallization, and the grain size reformed from 2.10 to 2.63 μm, while SS grain size from 1.68 to 2.42 μm obtained with variation of the rotational speed. The distribution of grain misorientation angle at the interface was varied from 31 to 45° with the different rotational speeds. Al6063-T6 exhibited significantly greater misorientations and wider variances in their scattering compared to SS304L. The ongoing dynamic recrystallization was observed for the grain refinement on the Al6063-T6 side of the interface, whereas dynamic recovery was noted on the SS304L side. The texture intensity of Al6063-T6 and SS304L varies owing to the rotation speed. The various rotational speed plays a dominant role in the tensile strength and metallurgical bonding between Al6063-T6 and SS304L that causes a higher amount of elements to participate at the faying zone which leads to creating intermetallic compounds such as AlFe, FeAl<sub>3</sub>, and AlFe<sub>3</sub> whereas the maximum strength of 214 MPa was received, which corresponds to 82% joint efficiency.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 2","pages":"431 - 448"},"PeriodicalIF":2.4,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01870-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Determination of EMF exposure in arc welding by introducing improved numerical anatomic body simulation 通过引入改进的解剖体数值模拟，确定电弧焊接中的电磁场暴露量

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-15 DOI: 10.1007/s40194-024-01871-w

Stephan A. Egerland, Benjamin Schranz, Harald Langeder

{"title":"Determination of EMF exposure in arc welding by introducing improved numerical anatomic body simulation","authors":"Stephan A. Egerland, Benjamin Schranz, Harald Langeder","doi":"10.1007/s40194-024-01871-w","DOIUrl":"10.1007/s40194-024-01871-w","url":null,"abstract":"<div><p>Electric and magnetic field (EMF) phenomena arise where applying manual arc welding equipment. Consequently, using such systems may cause adverse effects to welding personnel. Models available quantitatively to assess EMF impacts in welding consistently show underestimation of exposure, mainly due to simplified boundary conditions implemented to facilitate modelling application. For arc welding, this paper introduces a novel approach, namely the implementation of Induction Factors based on anatomical body models in realistic welding postures and welding current parameters to improve the EMF assessment quality. Moreover, it is shown in how far especially advanced MIG/MAG and TIG welding variants, for example also involving additional hardware, may cause exposure values close to the limits defined in currently existing standards. Results, both found in practical process application and numerical simulation, are presented and discussed. Employing the developed calculation approach is capable of compensating for inaccuracies yet identified with models still recommended by regulatory or professional bodies. Users are provided with comprehensive information to help practically evaluate EMF exposure.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 4","pages":"1157 - 1169"},"PeriodicalIF":2.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01871-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of ambient conditions in friction surfacing

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-15 DOI: 10.1007/s40194-024-01865-8

M. Hoffmann, E. A. Duda, P. Aspes, B. Klusemann

{"title":"Effect of ambient conditions in friction surfacing","authors":"M. Hoffmann, E. A. Duda, P. Aspes, B. Klusemann","doi":"10.1007/s40194-024-01865-8","DOIUrl":"10.1007/s40194-024-01865-8","url":null,"abstract":"<div><p>Friction surfacing (FS) is a solid-state deposition process in which layers are deposited on a substrate surface by frictional heat and severe plastic deformation of a consumable stud material below its melting temperature. Bonding occurs due to accelerated diffusion. The deposition of several layers on top of each other is referred to as multi-layer FS (MLFS), a promising candidate for additive manufacturing (AM) as it offers advantages over fusion-based AM. In this study, the MLFS process for the precipitation-hardenable alloy AA2024 is investigated regarding the influence of environmental process conditions, i.e., preheating of the substrate like other AM processes as well as underwater and room temperature experiments. The influence of ambient conditions on the process behavior, the layer geometries, the microstructure, and the mechanical properties is shown. Preheating the substrate leads to an overall higher process temperature (424.1 °C), resulting in thinner and wider layers, larger grains, an overaged microstructure, and a smooth hardness transition in the MLFS stacks from top (140 HV0.1) to bottom (95 HV0.1). The lower the process temperatures, e.g., for underwater FS (326.5 °C), the thicker and less wide the layers and the smaller the grains. The hardness shows a periodic pattern at the layer interface, which is more pronounced at lower process temperatures, i.e., the hardness values range from 100 HV0.1 to 150 HV0.1.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 2","pages":"397 - 406"},"PeriodicalIF":2.4,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11761850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143051252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effectiveness and efficiency of tool alignment and simultaneity factors on double-sided friction stir welding for joining heat-treatable aluminum alloys: a review

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-13 DOI: 10.1007/s40194-024-01867-6

Rikko Putra Youlia, Wenya Li, Yu Su, Yishuang Tang, Diah Utami

{"title":"Effectiveness and efficiency of tool alignment and simultaneity factors on double-sided friction stir welding for joining heat-treatable aluminum alloys: a review","authors":"Rikko Putra Youlia, Wenya Li, Yu Su, Yishuang Tang, Diah Utami","doi":"10.1007/s40194-024-01867-6","DOIUrl":"10.1007/s40194-024-01867-6","url":null,"abstract":"<div><p>Friction stir welding (FSW) can be challenging for joining thick heat-treatable aluminum alloy plates due to limitations with the single-pass method and heat distribution. To address these challenges, the double-sided FSW (DS-FSW) method was developed. It allows for welding the unwelded side of the plate which cannot be reached by the pin’s height at the first pass. DS-FSW has been proven to overcome many challenges and has been found to be a great solution for FSW in welding thicker plates. During DS-FSW implementation, some drawbacks related to machine parameters were discovered but were addressed through tool development. However, the time efficiency issue was only solved when two identical tools were used. This approach, known as simultaneous DS-FSW (SDS-FSW), significantly reduced processing time. It also led to improved microstructures and mechanical properties based on survey results. The dual-tool simultaneity provided flexibility for dwelling into the workpiece in different ways, such as parallel side-by-side, tandem in-line, and staggered transverse, which were mostly used for lap welding in single-pass FSW and showed remarkable performance. Regardless of the dwelling method used, the impact of process parameters in FSW must always be taken into consideration, emphasizing the importance of the tool profile and machine-related parameters being in optimal working order.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 2","pages":"407 - 430"},"PeriodicalIF":2.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Friction welding of two carbon low alloy steels 42CrMo and 36Mn2V: Effects of forging pressure and post-weld heat treatment on microstructure and mechanical properties

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-13 DOI: 10.1007/s40194-024-01864-9

Tian Lu, Wenya Li, Chuanliu Wang, Dongzhuang Tian

{"title":"Friction welding of two carbon low alloy steels 42CrMo and 36Mn2V: Effects of forging pressure and post-weld heat treatment on microstructure and mechanical properties","authors":"Tian Lu, Wenya Li, Chuanliu Wang, Dongzhuang Tian","doi":"10.1007/s40194-024-01864-9","DOIUrl":"10.1007/s40194-024-01864-9","url":null,"abstract":"<div><p>Two carbon low alloy steels 42CrMo and 36Mn2V were successfully jointed using continuous drive friction welding. The effects of forging pressure and post-weld heat treatment on microstructure and mechanical properties of joints were investigated in detail. Results reveal that with increasing the forging pressure, the tensile and yield strength increase firstly and then decrease. The as-welded joint with the highest yield strength (708 MPa), largest elongation (14.2%), and high impact toughness (57.24 J) were obtained with the 35 MPa forging pressure. After post-weld heat treatment, the joint yield strength, elongation, and impact toughness were increased to 798 MPa, 18.1%, and 71.02 J, respectively. The microhardness measurement results indicate that the as-welded joints show higher Vicker hardness than the two base metals. After post-weld heat treatment, the microhardness was decreased owing to martensite elimination. The above findings provide a basis for the implementation of friction welding of dissimilar steels used for drills in the coal-mining industry.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 2","pages":"383 - 395"},"PeriodicalIF":2.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of bonding temperature on solid-state diffusion bonded joints of AA2219 and Ti-6Al-4V dissimilar alloys—microstructure and mechanical characterisation

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-09 DOI: 10.1007/s40194-024-01863-w

Manjunath Vatnalmath, Virupaxi Auradi, Bharath Vedashantha Murthy, Madeva Nagaral

引用次数: 0

Hybrid heating in the fused filament fabrication process

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-11-04 DOI: 10.1007/s40194-024-01851-0

Ionel Danut Savu, Sorin Vasile Savu, Nicusor-Alin Sirbu

{"title":"Hybrid heating in the fused filament fabrication process","authors":"Ionel Danut Savu, Sorin Vasile Savu, Nicusor-Alin Sirbu","doi":"10.1007/s40194-024-01851-0","DOIUrl":"10.1007/s40194-024-01851-0","url":null,"abstract":"<div><p>Altering the heating regime of the polymer during the fused filament fabrication (FFF) process can lead to changes in both the behaviour of the polymer and the characteristics of the printed product. This study proposes replacing the traditional resistive heating system with two hybrid systems that introduce an additional temperature of 120–160 °C: one combining resistive and hot air jet heating, and the other combining resistive and infrared radiation heating. The samples printed using these hybrid systems were analysed using differential scanning calorimetry (DSC) and visually inspected. Commercial ABS and PLA filaments were used in the experimental programme. A model to evaluate the polymer’s melting during the printing process was proposed and experimentally validated. Visual testing revealed that the printed lattice structure had smaller voids, characterised by depositions that were flattened rather than circular in cross-section due to the extended time in a viscous/partially molten state. The elongation viscosity and storage modulus decreased by approximately 10%, with a slightly smaller decrease observed for the infrared radiation heat source. The glass transition temperature remained unchanged, and the molecular mobility was not affected by the additional heat. Similarly, the energy required for crystal formation was unaffected by the supplementary heat. The mechanical behaviour of the printed pieces during compression tests was also influenced by the addition of a second heat source. For both materials, a decrease in deformability was observed as the temperature of the hot air jet increased.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 4","pages":"897 - 914"},"PeriodicalIF":2.4,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01851-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0