Welding International最新文献_第10页

Performance of ANN in predicting the depth to width ratio and tensile strength of UNS S32750 laser weld joints ANN在预测UNS S32750激光焊接接头的深宽比和抗拉强度中的应用

Welding International Pub Date : 2023-02-01 DOI: 10.1080/09507116.2023.2191805

S. Saravanan, K. Kumararaja

{"title":"Performance of ANN in predicting the depth to width ratio and tensile strength of UNS S32750 laser weld joints","authors":"S. Saravanan, K. Kumararaja","doi":"10.1080/09507116.2023.2191805","DOIUrl":"https://doi.org/10.1080/09507116.2023.2191805","url":null,"abstract":"Abstract The effectiveness of the pulsed mode laser weld joint is characterized by the supply of optical energy to the interface. The laser welding process parameters, such as laser power, pulse duration, travel speed and focus, determine the efficacy of the weld, which is defined by full penetration and free of pores and defects. However, expressing the relationship between various process parameters and mechanical strength is intricate due to the prevalence of non-linear relationship. The development of computational approaches aids in optimizing the laser welding parameters and reducing trial and error. Hence, the artificial neural network (ANN) model is developed, in a python environment, to predict the optimum process parameter values for a desirable depth to width ratio and maximum tensile strength of UNS S32750 laser butt weld joints. The developed model was assessed by experiments, not utilized for training. The ANN model predicts the depth to width ratio and tensile strength of the weld joints with an accuracy of 90% and less than 10% divergence from the experimental result. Furthermore, for the process, parametric conditions are: (power: 550 W, focus: –1 mm, pulse duration: 13 Hz and travel speed: 136 mm/min) to attain maximum tensile strength.","PeriodicalId":23605,"journal":{"name":"Welding International","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44306219","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 performance of dissimilar friction stir welded lap-joint between aluminium alloy 6061 and 316 stainless steel 6061铝合金与316不锈钢异种搅拌摩擦焊搭接接头的力学性能

Welding International Pub Date : 2023-02-01 DOI: 10.1080/09507116.2023.2190475

Huy Huu Ho, Hao Dinh Duong, Quan Minh Nguyen, Tra Hung Tran

引用次数: 0

Effect of heat input on mechanical and metallurgical properties of AISI 304L stainless steel by using TIG welding 热输入对AISI 304L不锈钢TIG焊接力学性能和冶金性能的影响

Welding International Pub Date : 2023-02-01 DOI: 10.1080/09507116.2023.2185169

Angshuman Roy, N. Ghosh, S. Mondal

{"title":"Effect of heat input on mechanical and metallurgical properties of AISI 304L stainless steel by using TIG welding","authors":"Angshuman Roy, N. Ghosh, S. Mondal","doi":"10.1080/09507116.2023.2185169","DOIUrl":"https://doi.org/10.1080/09507116.2023.2185169","url":null,"abstract":"Abstract In this research, we examine the ways in which heat treatment affects TIG-welded joints made from austenitic AISI 304 L stainless steel. TIG welding was performed on austenitic 304 L stainless steel at low (0.57 KJ/mm), medium (0.63 KJ/mm), and high (0.69 KJ/mm) heat. TIG welding was used to join together AISI 304 L stainless steel samples here. A consistent 3 mm thick plates were taken for the joints. All of the joints were butt-welded. In order to conduct tensile tests, hardness tests, and microstructural analyses, samples were cut and machined to the appropriate dimensions. Once the joints are ready, visual inspection and X-rays were conducted. This study examined the effects of applying different levels of heat on AISI 304 L stainless steel butt joints. The material’s tensile properties were tested and analysed after being butt-joined. Welded samples’ microstructures were examined with a Leica DM LM metallurgical microscope. Consistent with the microstructural characteristics, the tensile test findings were also consistent. The research found that compared to joints prepared with low and high heat input, those prepared with medium heat input exhibited greater tensile strength, percentage elongation and micro hardness value.","PeriodicalId":23605,"journal":{"name":"Welding International","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41877855","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

Investigating the effect of residual stresses and distortion of laser welded joints for automobile chassis and optimizing weld parameters using random forest based grey wolf optimizer 基于随机森林的灰狼优化器研究汽车底盘激光焊接接头残余应力和变形的影响及焊接参数优化

Welding International Pub Date : 2023-01-02 DOI: 10.1080/09507116.2023.2174915

Sanjay S. Surwase, S. Bhosle

引用次数: 1

Microstructural and wear properties of mild steel cladded with AISI 316L stainless steel using pulsed current gas metal arc welding process aisi316l不锈钢包覆低碳钢脉冲电流气体电弧焊的组织与磨损性能

Welding International Pub Date : 2023-01-02 DOI: 10.1080/09507116.2023.2169085

Mani Jayavelu, Srinivasan Kasi, Balasubramanian Visvalingam, Prasanna Nagasai Bellamkonda, Malarvizhi Sudersanan

{"title":"Microstructural and wear properties of mild steel cladded with AISI 316L stainless steel using pulsed current gas metal arc welding process","authors":"Mani Jayavelu, Srinivasan Kasi, Balasubramanian Visvalingam, Prasanna Nagasai Bellamkonda, Malarvizhi Sudersanan","doi":"10.1080/09507116.2023.2169085","DOIUrl":"https://doi.org/10.1080/09507116.2023.2169085","url":null,"abstract":"Abstract The main objective of this study is to study the microstructure and wear resistance of mild steel (MS) of grade IS 2062 that has had an austenitic stainless steel (AISI 316L) coating applied utilizing the pulsed current gas metal arc welding (PC-GMAW) technique. The PC-GMAW method was used to overcome issues with the conventional gas metal arc welding (CC-GMAW) method used for cladding AISI 316L steel over mild steel, such as a larger heat affected zone (HAZ), coarse-grained deposited weld metal microstructure, less penetration depth and higher dilution and reinforcement height. Optical microscopy (OM) was used to examine the microstructural characteristics of the clad region. Using the pin-on-disc testing machine, the wear rate of cladded specimens was recorded, and scanning electron microscopy (SEM) was used to examine the morphology of wear surfaces. The microhardness distribution of the cladded region was examined, and the wear characteristics of the cladded specimens were correlated. According to the findings, PC-GMAW cladding is harder and more resistant to wear than a mild steel substrate. The PC-GMAW cladding exhibited higher weld metal deposition and lower dilution. Weld overlay hardness was 15.83% higher in the PC-GMAW cladding than in the mild steel substrate. The wear rate was decreased by an average of 20.18% as compared to the mild steel substrate with PC-GMAW cladding.","PeriodicalId":23605,"journal":{"name":"Welding International","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43924520","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

Multi-class semantic segmentation for identification of silicate island defects 用于硅酸盐岛缺陷识别的多类语义分割

Welding International Pub Date : 2023-01-02 DOI: 10.1080/09507116.2022.2163937

Vishwath Ramachandran, Susan Elias, B. Narayanan, Ayyappan Uma Chandra Thilagam, Niyanth Sridharann

引用次数: 0

Modeling and optimization of tool parameters in friction stir lap joining of aluminum using RSM and NSGA II 基于RSM和NSGA-II的铝搅拌摩擦搭接工具参数建模与优化

Welding International Pub Date : 2023-01-02 DOI: 10.1080/09507116.2022.2164530

M. Akbari, Hossein Rahimi Asiabaraki

{"title":"Modeling and optimization of tool parameters in friction stir lap joining of aluminum using RSM and NSGA II","authors":"M. Akbari, Hossein Rahimi Asiabaraki","doi":"10.1080/09507116.2022.2164530","DOIUrl":"https://doi.org/10.1080/09507116.2022.2164530","url":null,"abstract":"Abstract Friction stir welding (FSW) success depends heavily on the temperature and strain the FSW/FSP tool induces. This study examined the influence of FSW tool characteristics like shoulder and probe diameter and probe height on temperature, forces and failure load of welding of AA5083 alloy using the response surface methodology (RSM). The study’s setup consisted of three factors, three levels, and 17 experimental runs. In order to determine the welding temperature, a thermocouple was placed inside the samples. Also, the force during the process was measured using a fixture designed for this purpose. The generated model’s suitability at a 95% confidence level was assessed using an analysis of variance. Using RSM, a relationship was discovered between input parameters, including tool settings and output responses, such as temperature, force, and joint mechanical properties. This relationship was then used to discover the best process parameters using a hybrid multiobjective optimization. Hybrid multiobjective optimization recommends a probe diameter of 5.1 mm, a shoulder diameter of 17.63 mm, and a probe height of 3.86 mm as the optimum tool. This study discovered that the most important factors influencing temperature force and failure load were shoulder diameter, probe diameter, and probe height, respectively.","PeriodicalId":23605,"journal":{"name":"Welding International","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47076512","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: 10

Study of joining copper-mild steel using microwave energy 微波能连接铜-低碳钢的研究

Welding International Pub Date : 2023-01-02 DOI: 10.1080/09507116.2022.2162460

S. Singh, R. M. Belokar

{"title":"Study of joining copper-mild steel using microwave energy","authors":"S. Singh, R. M. Belokar","doi":"10.1080/09507116.2022.2162460","DOIUrl":"https://doi.org/10.1080/09507116.2022.2162460","url":null,"abstract":"Abstract In the present work, joining of dissimilar metals using electromagnetic energy has been successfully achieved. A 900 W multimode microwave applicator at the fixed frequency of 2450 MHz was used to generate the required heat energy for joining. Copper (Cu) and mild steel (MS) were chosen as the base material to be joined. Copper metal powder in the form of the thick slurry was prepared and used as a joining agent between two bulk interfaces. The joining process was carried out through the controlled emission of microwaves at a particular area for a particular period of time. Due to these controlled emissions of microwaves, the slurry of metal powder got melted and produced a fine bond with the bulk interfaces on cooling. To understand the nature of the joint formation, joints were characterized by using an optical microscope, SEM, X-ray diffractometer, microhardness tester, and Universal testing machine. Analysis of SEM resulted in a well-defined, merged, and fused joint. The microhardness at the joint zone was recorded to be 73 ± 4 HV and 78 ± 6 HV on copper side and MS side respectively. Strength test results showed the UTS of 170 MPa with 13.25% elongation.","PeriodicalId":23605,"journal":{"name":"Welding International","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48696138","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

Experimental evaluation of longitudinal tensile properties of ferritic stainless-steel weldment joined by metal inert gas, pulse metal inert gas, and tungsten inert gas welding 金属惰性气体、脉冲金属惰性气体和钨惰性气体焊接铁素体不锈钢焊件纵向拉伸性能的实验评价

Welding International Pub Date : 2022-12-02 DOI: 10.1080/09507116.2022.2154718

S. Hussain, A. K. Pathak

{"title":"Experimental evaluation of longitudinal tensile properties of ferritic stainless-steel weldment joined by metal inert gas, pulse metal inert gas, and tungsten inert gas welding","authors":"S. Hussain, A. K. Pathak","doi":"10.1080/09507116.2022.2154718","DOIUrl":"https://doi.org/10.1080/09507116.2022.2154718","url":null,"abstract":"Abstract In this work, ferritic stainless steel (FSS) weldments were prepared by tungsten inert gas (TIG), metal inert gas (MIG), and pulsed-MIG welding. Pure argon and a mixture of argon + 2% oxygen were utilized as shielding gas in each type of welding. The FSS (ER430) and austenitic stainless steel (ASS) (ER309L) wires were used as filler consumable wires during all the three types of welding. The effects of varying welding processes, shielding gases, and consumable electrodes on the longitudinal tensile properties of weldments were investigated. The universal tensile testing machine was used to evaluate longitudinal ultimate tensile strength and percentage elongation experimentally in each case. The maximum tensile strength of FSS weldment was obtained in the case of (Ar + 2% O2) mixture of shielding gas and ASS filler wire in each welding process. Heat treatment was also carried out for samples prepared by MIG and TIG welding. The reduction in tensile strength and enhancement in percentage elongation was observed for both MIG and TIG welding after heat treatment.","PeriodicalId":23605,"journal":{"name":"Welding International","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45402172","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

Weldability evaluation of X80 sour line pipe using a combination of thermal simulation and actual girth welding 采用热模拟和实际环焊缝相结合的方法评估X80酸性管线管道的焊接性

Welding International Pub Date : 2022-12-02 DOI: 10.1080/09507116.2022.2155091

G. Z. Batista, L. P. Carvalho, F. Arroyo

{"title":"Weldability evaluation of X80 sour line pipe using a combination of thermal simulation and actual girth welding","authors":"G. Z. Batista, L. P. Carvalho, F. Arroyo","doi":"10.1080/09507116.2022.2155091","DOIUrl":"https://doi.org/10.1080/09507116.2022.2155091","url":null,"abstract":"Abstract The weldability studies of API 5LX80 pipes developed for sour service are very recent and limited information about its heat-affected zone (HAZ) properties can be found. This paper presents a comprehensive evaluation of HAZ using both thermal simulation and the production of actual girth weld joints. The test methodology included microstructural analysis, Charpy impact test, hardness (HV10), microhardness (HV0.1), and sulfide stress cracking tests (SCC). The intercritical coarse grain HAZ presented impact toughness reduction from values above 300 J to less than 50 J at 0 °C when heat input is increased above 1.5 kJ/mm. It can be explained by grain coarsening and martensite-austenite (MA) formation as a ‘necklace’ structure at previous austenite grain boundaries. Hardness and microhardness values for both simulated and actual HAZ were below the maximum limit of 250HV usually specified by industry. Specimens submitted to the sulfide stress cracking (SSC) tests did not present any crack demonstrating that the welded joint is appropriate for sour environments. Finally, a maximum heat input of 1.5 kJ/mm is recommended for field welding. For higher heat inputs, a deeper evaluation of HAZ toughness should be done. The results contribute to supporting the application of this material as an alternative for long-distance high-pressure pipelines with H2S.","PeriodicalId":23605,"journal":{"name":"Welding International","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44959797","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