Welding in the World最新文献_第2页

Static strength assessment of a carbon steel S235 non-load-carrying fillet weld 碳钢S235非承载角焊缝的静态强度评估

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-06-12 DOI: 10.1007/s40194-025-02099-y

Jozef Dlugoš, Róbert Gális, Lubomír Drápal

{"title":"Static strength assessment of a carbon steel S235 non-load-carrying fillet weld","authors":"Jozef Dlugoš, Róbert Gális, Lubomír Drápal","doi":"10.1007/s40194-025-02099-y","DOIUrl":"10.1007/s40194-025-02099-y","url":null,"abstract":"<div><p>There are several guidelines and standards for assessing the load capacity of welds in terms of static loading. The individual procedures – among other things – differ in the limit state considered, the characteristic stress calculation, the material data used and the critical region’s location. Therefore, they lead to different allowable limit loads. The question naturally arises as follows: What is the most accurate calculation? This paper offers an answer to this question for the case of a non-load-carrying weld specimen made of S235JRG2. The specimen under investigation was subjected to the static strength assessment via ČSN 05 0120, Eurocode 3, AWS D1.1/D1.1M:2020, AISC, FKM and the FEMFAT software. Subsequently, an experiment was carried out for a given geometry and a combination of base and weld materials. The methods best correlating with the experiment were uncovered. The rupture of the specimen did not occur near the notches of the weld seam but in the region of the largest plastic deformation. This was also confirmed by a finite element analysis.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 8","pages":"2419 - 2431"},"PeriodicalIF":2.5,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-025-02099-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164614","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 laser power on microstructure and properties of high-speed laser cladding of S890 steel 激光功率对S890钢高速激光熔覆组织和性能的影响

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-06-12 DOI: 10.1007/s40194-025-02092-5

Kanglong Wang, Yunfeng Chang, Xiaoqin Guo, Tongda Wei, Yishuai Fu, Shannan Zhang, Dongliang Wang

{"title":"Effect of laser power on microstructure and properties of high-speed laser cladding of S890 steel","authors":"Kanglong Wang, Yunfeng Chang, Xiaoqin Guo, Tongda Wei, Yishuai Fu, Shannan Zhang, Dongliang Wang","doi":"10.1007/s40194-025-02092-5","DOIUrl":"10.1007/s40194-025-02092-5","url":null,"abstract":"<div><p>High-speed laser cladding was utilized to deposit a stainless steel coating on an S890 high-strength steel shaft and a laser power range of 2400 to 4200 W. The microstructure, mechanical properties, and grain growth behavior of the coating were systematically investigated. As the laser power increases, coating thickness, the width of the heat-affected zone, and the dilution rate exhibit a gradual upward trend, whereas the surface roughness initially decreases and subsequently increases, the grain size initially decreases and subsequently increases, and the element distribution becomes progressively more non-uniform. The microstructure of the coating predominantly consists of fine equiaxed grains and columnar grains, with the major phase being α-Fe. Compared to the substrate, the coating demonstrates enhanced hardness and corrosion resistance, the maximum hardness of the coating increases by 131.3%, and the corrosion tendency of the optimal coating decreased by 81.8%. Crystal grain refinement, homogeneous distribution of elements, and a high content of high-angle grain boundaries contribute to impeding dislocation movement, thereby prominently enhancing the mechanical properties of the coating. The high-speed laser cladding technology not only facilitates the improvement of the coating’s forming quality but also reinforces its surface strength and comprehensive performance.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 9","pages":"2539 - 2552"},"PeriodicalIF":2.5,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165568","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

Effects of hidden welding and overlap ratios on the fatigue life of partially overlapped tubular joints 隐焊和搭接比对部分搭接管接头疲劳寿命的影响

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-06-04 DOI: 10.1007/s40194-025-02081-8

Shazia Muzaffer, Kyong-Ho Chang, Mikihito Hirohata

{"title":"Effects of hidden welding and overlap ratios on the fatigue life of partially overlapped tubular joints","authors":"Shazia Muzaffer, Kyong-Ho Chang, Mikihito Hirohata","doi":"10.1007/s40194-025-02081-8","DOIUrl":"10.1007/s40194-025-02081-8","url":null,"abstract":"<div><p>Offshore wind turbine support structures endure significant cyclic fatigue loads, causing peak stresses at welded joints, which can lead to crack initiation and structural failure. The fatigue performance of welded tubular joints is therefore critical in ensuring safety and extending service life. Challenges arise in assessing joints with varying overlap ratios and with or without hidden welds, as traditional methods often fail to capture the complexities of residual stress and welding deformations that influence fatigue behavior. In this study, fatigue analysis of tubular joints with or without hidden weld and with different overlap ratios was conducted to estimate the fatigue life and predict the crack initiation positions. The 3D fatigue FE analysis is based on constitutive equations, thermal elastoplastic analysis, and continuum damage mechanics. Residual stresses and welding deformations were modeled to simulate the weld’s initial state, providing realistic input for cyclic loading in the FE analysis. The study aims to estimate fatigue life and identify likely crack initiation sites in various tubular joint configurations under cyclic fatigue loads. S–N curves obtained through this analysis were compared with Eurocode 3 standards, validating the approach. The study offers refined insights into fatigue behavior across joint types, supporting safer, more reliable offshore wind turbine designs.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 8","pages":"2509 - 2527"},"PeriodicalIF":2.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161813","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

Regression-driven modeling and optimization of ultrasonic-assisted activated flux tungsten inert gas welding on AISI 316L aisi316l型超声辅助活性焊剂钨极惰性气体焊接的回归驱动建模与优化

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-06-04 DOI: 10.1007/s40194-025-02090-7

Mahdi Mazloom Farsibaf, Mohammad Naser Sadraee Far, Ahmad Nourani, Farhad Kolahan, Sadegh Elhami

{"title":"Regression-driven modeling and optimization of ultrasonic-assisted activated flux tungsten inert gas welding on AISI 316L","authors":"Mahdi Mazloom Farsibaf, Mohammad Naser Sadraee Far, Ahmad Nourani, Farhad Kolahan, Sadegh Elhami","doi":"10.1007/s40194-025-02090-7","DOIUrl":"10.1007/s40194-025-02090-7","url":null,"abstract":"<div><p>This study investigates the ultrasonic-assisted activated tungsten inert gas (UA-TIG) welding process, a promising technique for advanced manufacturing. The objective was to model and optimize UA-TIG parameters to enhance weld geometry, specifically achieving a high depth-to-width (D/W) aspect ratio. Activated by SiO<sub>2</sub> nanoparticles as flux, the process employed central composite design (CCD) to examine the influence of welding current, travel speed, and ultrasonic vibration amplitude across five levels. Bead-on-plate welding tests on AISI 316L stainless steel were supported by simulations to identify optimal ultrasonic zones. Using analysis of variance (ANOVA) and response surface methodology (RSM) for optimization, results revealed robust regression modeling with an error margin below 6%. Compared to tungsten inert gas (TIG) and activated flux TIG (A-TIG) methods, UA-TIG welding achieved a substantial D/W improvement, enhancing the ratio by 320% and 56%, respectively. UA-TIG welding also demonstrated the highest microhardness (210 Vickers) among the tested samples and effectively minimized heat affected zone (HAZ) width, showcasing its superior thermal control and weld quality. This work demonstrates UA-TIG’s effectiveness in achieving superior weld geometry with optimized parameters, indicating its potential for widespread application in precision welding.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 9","pages":"2827 - 2838"},"PeriodicalIF":2.5,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162021","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

Metal transfer and microstructures in aluminum welding using cold wire pulsed GMAW (CW-P-GMAW) 冷丝脉冲GMAW焊接铝的金属转移和显微组织

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-06-03 DOI: 10.1007/s40194-025-02091-6

R. A. Ribeiro, P. D. C. Assunção, V. Sengupta, R. Khan, A. P. Gerlich

引用次数: 0

Multiaxial fatigue life calculation of welded joints made of ductile materials 延性材料焊接接头的多轴疲劳寿命计算

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-06-03 DOI: 10.1007/s40194-025-02080-9

Niklas Michael Bauer, Jörg Baumgartner

{"title":"Multiaxial fatigue life calculation of welded joints made of ductile materials","authors":"Niklas Michael Bauer, Jörg Baumgartner","doi":"10.1007/s40194-025-02080-9","DOIUrl":"10.1007/s40194-025-02080-9","url":null,"abstract":"<div><p>Welded joints made of ductile materials exhibit a significant reduction in fatigue life under non-proportional multiaxial loading compared to proportional loading. Different methods to calculate multiaxial fatigue life are evaluated on a comprehensive database, which is created based on various fatigue tests showing ductile material behavior under uniaxial, proportional, and out-of-phase loading. This paper finds that well-known stress-based methods widely used in the literature to evaluate multiaxial fatigue of welded joints cannot accurately calculate fatigue life under both proportional and non-proportional loading for welded ductile materials. Two new methods providing reliable and accurate fatigue life predictions with little scatter under both constant and variable amplitude loading are developed, analyzed in detail, and compared to existing approaches. The new methods include an interaction equation derived from the criteria proposed in codes and standards, as well as a machine learning approach based on artificial neural networks, both developed and optimized or trained based on the created database. Using interpretable machine learning, the neural networks are found to have learned similar correlations between multiaxial loading and fatigue life as those represented by the new interaction equation.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 8","pages":"2399 - 2418"},"PeriodicalIF":2.5,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-025-02080-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161433","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

Influence of a preload on the fatigue behaviour of S355 and S700 cruciform joints 预载荷对S355和S700十字形接头疲劳性能的影响

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-06-02 DOI: 10.1007/s40194-025-02079-2

Lauriane Guilmois, Isabel Huther, Laurent Jubin, Fabien Lefebvre, Vincent Leray

{"title":"Influence of a preload on the fatigue behaviour of S355 and S700 cruciform joints","authors":"Lauriane Guilmois, Isabel Huther, Laurent Jubin, Fabien Lefebvre, Vincent Leray","doi":"10.1007/s40194-025-02079-2","DOIUrl":"10.1007/s40194-025-02079-2","url":null,"abstract":"<div><p>Preload application techniques are often used to verify the structural integrity of mechanical systems. Generally, these procedures are performed after fabrication but before commissioning of such equipment, without any assessment of the impact of the preload on fatigue behaviour. These approaches are performed according to standards such as ASTM or DNV, which define applicable preload conditions, but neither technical justification nor quantification of the impacts is usually given. The aim of this study is to evaluate the effect of a preload on structural steel S355 or high-strength steel S700 cruciform joints for various levels of plastic strain. Fatigue tests were performed under tension (<i>R</i> = 0.1) without a preload as a reference and after two different levels of preload were applied: one corresponding to a local stress close to the weld toe equal to 1.25 times the yield stress and the other corresponding to a local stress equal to 1.56 times the yield stress. The fatigue results show an increase in the fatigue strength, depending on the configuration (load-bearing weld beads or non-load-bearing weld beads), of between two and seven fatigue (FAT) classes for the highest level of preload.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 8","pages":"2387 - 2397"},"PeriodicalIF":2.5,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161281","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

The effect of filament peaking on electron beam weld quality 长丝峰化对电子束焊接质量的影响

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-05-30 DOI: 10.1007/s40194-025-02082-7

John W. Elmer, Gordon Gibbs

{"title":"The effect of filament peaking on electron beam weld quality","authors":"John W. Elmer, Gordon Gibbs","doi":"10.1007/s40194-025-02082-7","DOIUrl":"10.1007/s40194-025-02082-7","url":null,"abstract":"<div><p>Electron beam welding uses high intensity beams that are generated by an electron emitting cathode under high vacuum conditions. The cathode, typically a ribbon or wire filament of refractory metal, must be heated to sufficiently high temperatures for electron emission to occur and must be carefully controlled to produce the desired beam current while at the same time optimizing filament lifetime. Traditional methods for doing this in commonly used triode gun assemblies consist of first finding the filament knee point in the filament current versus beam current relationship that produces the desired beam current for a given beam voltage. The filament current is then increased by some amount, typically 5–10%, per conventional wisdom to produce a peaked beam. This investigation studies and quantifies the beam and weld quality produced by underkneed and overpeaked filaments using electron beam diagnostics to measure the power density distribution of these beams. Underkneed filaments are shown to have power densities that drop off very quickly below the traditional knee, resulting in poor weld penetration. Kneed filaments do not reach the full beam intensity and also produce shallow welds. Increasing the filament current 10% above the traditional knee was shown to produce a circular Gaussian-like beam with peaked intensity optimized for welding and for filament lifetime. Further increases in the filament current that produce overpeaked beams do not significantly change the beam or weld quality and would only contribute to a reduced filament lifetime.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"69 9","pages":"2529 - 2538"},"PeriodicalIF":2.5,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-025-02082-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171022","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

Microstructure and strength characteristics of Al 5052-SS 304 explosive clads obtained in open-air and underwater conditions 露天和水下条件下获得的Al 5052-SS 304爆炸包壳的显微组织和强度特性

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-05-27 DOI: 10.1007/s40194-025-02077-4

S. Saravanan, Bir Bahadur Sherpa

引用次数: 0

Research progress in underwater welding: techniques, materials, advancements, and challenges 水下焊接的研究进展：技术、材料、进展和挑战

IF 2.5 4区材料科学

Welding in the World Pub Date : 2025-05-24 DOI: 10.1007/s40194-025-02068-5

Syed Quadir Moinuddin, Avanthika Chamarthi, Mohammad Faseeulla Khan, Akbar Niaz, Saad Arif, Muralimohan Cheepu, Ashok Kumar Dewangan, Suresh Goka

引用次数: 0