International Journal of Pressure Vessels and Piping最新文献

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Synchronously improving strength and toughness for pipeline steel weld via cerium adding 通过添加铈同步提高管道钢焊缝的强度和韧性
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-14 DOI: 10.1016/j.ijpvp.2025.105466
Ce Wang , Xinjie Di , Lianshuang Dai , Jin Liu , Jiawei Han , Xiaocong Yang , Zhaoqing Yang , Shaohua Cui , Chang Zhang , Zhibo Ma , Chengning Li
{"title":"Synchronously improving strength and toughness for pipeline steel weld via cerium adding","authors":"Ce Wang ,&nbsp;Xinjie Di ,&nbsp;Lianshuang Dai ,&nbsp;Jin Liu ,&nbsp;Jiawei Han ,&nbsp;Xiaocong Yang ,&nbsp;Zhaoqing Yang ,&nbsp;Shaohua Cui ,&nbsp;Chang Zhang ,&nbsp;Zhibo Ma ,&nbsp;Chengning Li","doi":"10.1016/j.ijpvp.2025.105466","DOIUrl":"10.1016/j.ijpvp.2025.105466","url":null,"abstract":"<div><div>The requirement for higher pressure gas flows and lower temperature service environments has emphasized the necessity to solve the trade-off between strength and impact toughness in pipeline steel weld. In this study, the strength and toughness were improved synchronously via cerium adding, and the strengthening-toughening mechanism and fracture behavior of the weld were revealed by multi-scale characterization. The research results indicated that the addition of Ce in 50–100 ppm can change the inclusion the inclusion from a single Al<sub>2</sub>O<sub>3</sub> to a mixture of Al<sub>2</sub>O<sub>3</sub> and CeAlO<sub>3</sub>, and refines the its size. In addition, the original austenite grain size, acicular ferrite size and grain boundary ferrite fraction also decrease. The reduction of grain boundary ferrite and inclusions effectively inhibited the crack initiation position, which increased the yield strength from 584±11 MPa to 629±11 MPa and 603±12 MPa, the impact toughness from 73±11 J to 123±12 J and 107±12 J. Therefore, with the Ce content from 0 to 50 ppm and 100 ppm, the strength and toughness of the weld appear to increase and then decrease. Moreover, the coarse grain boundary ferrite cannot produce coordinated deformation due to its low Schmidt factor, resulting in the fracture of grain boundary ferrite, which seriously decrease the crack propagation energy.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"215 ","pages":"Article 105466"},"PeriodicalIF":3.0,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the mechanical response and numerical simulation of uniaxial compression of coal based on size effect 基于尺寸效应的煤单轴压缩力学响应及数值模拟研究
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-13 DOI: 10.1016/j.ijpvp.2025.105463
Junwen Zhang , Yang Zhang , Shiji Wang , Chaorui Xing , Xvkai Dong , Shaokang Wu , Zhixiang Song , Yan Zhou
{"title":"Study of the mechanical response and numerical simulation of uniaxial compression of coal based on size effect","authors":"Junwen Zhang ,&nbsp;Yang Zhang ,&nbsp;Shiji Wang ,&nbsp;Chaorui Xing ,&nbsp;Xvkai Dong ,&nbsp;Shaokang Wu ,&nbsp;Zhixiang Song ,&nbsp;Yan Zhou","doi":"10.1016/j.ijpvp.2025.105463","DOIUrl":"10.1016/j.ijpvp.2025.105463","url":null,"abstract":"<div><div>With the intensification of coal mining, coal pillars have become weak links in mining systems, resulting in an increasing frequency of coal pillar rock burst disasters. The impact mechanisms, conditions, and failure characteristics of coal pillars vary depending on their size. For this reason, it is important to investigate the mechanical properties of coal pillars under different size conditions to prevent and control coal pillar rock bursts. In this work, the mechanical response of nine coal samples under uniaxial compression is analysed. Different coal samples undergo stress and fracture evolution during the entire failure process, which can be determined via discrete element software. The results show that (1) the stress‒strain curves of coal samples are strongly influenced by their size. When the sample diameter is 25 mm, the coal sample curve presents a three-stage failure process. As the diameter increases, the stress‒strain curve evolves gradually into a four-stage failure process. (2) The failure characteristics of the coal sample involve primarily shearing failure, which transitions from ‘single slash’ shear failure to ‘double slash’ conjugate shear failure as the diameter increases. A coal sample with a diameter-to-height ratio greater than 1:1 has primarily tensile failure characteristics. (3) Size significantly influences the energy and damage ageing evolution of coal samples during uniaxial compression. The height and diameter of a coal sample affect its dissipative energy growth starting point. The damage stage and damage rate of coal samples vary depending on their size. (4) Discrete element numerical simulations reveal that the characteristics of crack propagation are determined by the distribution of internal stress in coal samples. Macroscopic failure characteristics are determined by the types of main cracks in coal samples.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"215 ","pages":"Article 105463"},"PeriodicalIF":3.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143427886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pressure vessel failure analysis and numerical optimization of a composite repair patch with experimental validation 压力容器失效分析及复合修复贴片的数值优化与实验验证
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-13 DOI: 10.1016/j.ijpvp.2025.105454
Benjamin Mihaljec , Goran Vukelić , Željko Božić , Reza Bakhtiari
{"title":"Pressure vessel failure analysis and numerical optimization of a composite repair patch with experimental validation","authors":"Benjamin Mihaljec ,&nbsp;Goran Vukelić ,&nbsp;Željko Božić ,&nbsp;Reza Bakhtiari","doi":"10.1016/j.ijpvp.2025.105454","DOIUrl":"10.1016/j.ijpvp.2025.105454","url":null,"abstract":"<div><div>In this experimental and numerical study, an analysis of a failed steel pressure vessel is performed, along with an attempt to repair it using an optimized composite patch. Failure analysis is done using experimental non-destructive testing methods (visual and ultrasonic testing). It occurred that the failure was caused by excessive corrosion around the drain hole of the vessel. In an attempt to repair the vessel using a composite patch, numerical optimization of the thickness of the patch was performed first. A numerically optimized solution was used to build a composite repair patch and apply it to the failed pressure vessel. Experimental analysis revealed that the optimized composite patch is able to withstand the pressure set in the vessel. This type of optimization can help in reducing the costs of applying the composite patch to repair failed pressure vessels.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"215 ","pages":"Article 105454"},"PeriodicalIF":3.0,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on fusion regulation mechanism of dissimilar steel welds based on compound magnetic field 基于复合磁场的异种钢焊缝熔合调节机理研究
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-12 DOI: 10.1016/j.ijpvp.2025.105464
Wei Zhou , Jianfeng Yue , Shishuang Liu , Pu Zhong , Hao Zhou , Zhijie Wang
{"title":"Research on fusion regulation mechanism of dissimilar steel welds based on compound magnetic field","authors":"Wei Zhou ,&nbsp;Jianfeng Yue ,&nbsp;Shishuang Liu ,&nbsp;Pu Zhong ,&nbsp;Hao Zhou ,&nbsp;Zhijie Wang","doi":"10.1016/j.ijpvp.2025.105464","DOIUrl":"10.1016/j.ijpvp.2025.105464","url":null,"abstract":"<div><div>Due to significant differences in the mechanical and physical properties of materials, low-alloy steel/stainless-steel joints by gas tungsten arc welding (GTAW) have welding quality problems such as incomplete penetration and cracking, which are caused by large variations in base metal fusion ratio. To address such issues, in this study, the effect of the regulation mechanism by a compound magnetic field approach (longitudinal magnetic field (LMF) + cusp magnetic field (CMF)) on the base metal fusion ratio in Q345/316L dissimilar metal welds was investigated, through arc behavior, weld formation, and microstructure evolution. The suppression methods of weld defects such as incomplete penetration are also discussed. It was found that compound magnetic field-assisted dissimilar steel welding can be used to control the base metal fusion ratio, effectively avoid defects due to incomplete weld penetration, and significantly improve the quality of dissimilar steel weldments. Compared with the sample without external magnetic field (EMF), as the exciting currents increased, the fusion ratio of Q345 in the dissimilar steel weld <em>FR</em><sub>Q345</sub> gradually diminished from 34.15 % to 11.99 %; The fusion ratio of base metals <em>FR</em><sub>BMs</sub> gradually diminished from 46.55 % to 26.55 %; The content of brittle-phase martensite in the weld metal gradually decreased, and the content of residual austenite phase significantly increased. The dendrite arm spacing (DAS) was significantly reduced under the influence of the compound magnetic field, resulting in the refinement degree ranging from 32.58 % to 46.83 %. These results provide guidance for heat energy regulation in dissimilar steel welding and a new solution for improving the welding quality of dissimilar metals with asymmetric material properties.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"215 ","pages":"Article 105464"},"PeriodicalIF":3.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mechanical characteristics of reinforced soft tubes under combined internal pressure and thermal loads 内压和热载荷联合作用下加固软管的力学特性
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-12 DOI: 10.1016/j.ijpvp.2025.105458
Chen Fu , Lingxiao Quan , Yi Li , Yuheng Geng , Changhong Guo
{"title":"Mechanical characteristics of reinforced soft tubes under combined internal pressure and thermal loads","authors":"Chen Fu ,&nbsp;Lingxiao Quan ,&nbsp;Yi Li ,&nbsp;Yuheng Geng ,&nbsp;Changhong Guo","doi":"10.1016/j.ijpvp.2025.105458","DOIUrl":"10.1016/j.ijpvp.2025.105458","url":null,"abstract":"<div><div>Reinforced polytetrafluoroethylene (PTFE) soft tubes are subjected to high internal pressure and thermal loads during operation. These conditions pose significant challenges to their structural reliability and the safety of aircraft piping systems. To investigate the mechanical characteristics of the reinforced soft tubes under internal pressure and thermal loads, a high-precision finite element model is developed. Firstly, the effects of braiding angle and diameter-to-thickness ratio on the load-bearing capacity of the reinforced soft tubes are examined. Subsequently, the mechanical responses under varying ambient temperatures are analyzed in conjunction with thermal loads. Finally, the accuracy of the simulation model and methodology is validated through a pressure resistance test at 21 MPa. The results indicate that 54.7°is the optimal braiding angle for the reinforced soft tubes, and a smaller diameter-to-thickness ratio enhances the pressure resistance of the tubes. The metal-reinforced layer serves as the primary structural support, with its stress increasing by 109.76% as oil pressure rises from 10.5 MPa to 21 MPa. Additionally, high temperatures induce stress concentration in the metal-reinforced layer, while extreme temperature differences result in severe deformation of the inner tube. Experimental validation demonstrates that the maximum stress error of the finite element model is within 12.22%. These findings provide crucial insights into the design and optimization of the reinforced soft tubes, emphasizing how material properties and structural configurations can improve the safety and reliability of aircraft piping systems under complex flight conditions.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"215 ","pages":"Article 105458"},"PeriodicalIF":3.0,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Simulation and analysis of full-coverage ultrasonic signal detection for reinforcement part of nuclear reactor pressure vessel outlet nozzle 核反应堆压力容器出口喷嘴加固件全覆盖超声信号检测仿真与分析
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-10 DOI: 10.1016/j.ijpvp.2025.105462
Maocheng Hong , Yilin Li , Jingli Yan , Guanbing Ma , Xin Ye , Huaidong Chen , Xiaobing Zhang
{"title":"Simulation and analysis of full-coverage ultrasonic signal detection for reinforcement part of nuclear reactor pressure vessel outlet nozzle","authors":"Maocheng Hong ,&nbsp;Yilin Li ,&nbsp;Jingli Yan ,&nbsp;Guanbing Ma ,&nbsp;Xin Ye ,&nbsp;Huaidong Chen ,&nbsp;Xiaobing Zhang","doi":"10.1016/j.ijpvp.2025.105462","DOIUrl":"10.1016/j.ijpvp.2025.105462","url":null,"abstract":"<div><div>Pressurized water reactors (PWRs) are the predominant type of nuclear power plant globally, with their reactor pressure vessels (RPVs) subject to stringent in-service inspection (ISI) requirements as mandated by regulatory standards. However, the complex curved surface of the reinforcement part presents challenges for ultrasonic testing in the outlet nozzle-to-shell weld areas, resulting in inaccessible zones that lack practical quantitative analysis methods for volume coverage. This study systematically parameterized the geometric features of the outlet nozzle reinforcement part, including the cone, fillet, and ellipse. It introduced seven categories of ultrasonic beam tangent segmentation algorithms based on spatial curves. Using Pro/E software, we developed a 3D ultrasonic beamline model of inaccessible zones and validated its accuracy against two-dimensional data obtained from AutoCAD. Building on this foundation, a fully parametric simulation model and discrete volume data were employed to plot the continuous curves of inaccessible zones’ volume on the side of the typical outlet nozzle reinforcement part as a function of ultrasonic incidence angles, elucidating the nonlinear, multi-stage superimposed impact of complex surface characteristics on the volume of inaccessible zones. This research provides vital theoretical support and a methodological basis for optimizing ultrasonic testing processes and quantitative evaluation of volume coverage in nozzle areas with complex surfaces, particularly saddle-like profiles.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"216 ","pages":"Article 105462"},"PeriodicalIF":3.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Material selection of titanium alloy pipelines considering multi-criteria in an acidic environment based on analytic hierarchy process 基于层次分析法的酸性环境下多准则钛合金管道选材
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-10 DOI: 10.1016/j.ijpvp.2025.105461
Dezhi Zeng , Jiancheng Luo , Chengxiu Yu , Guangguang Xiang , Ting Mao , Shaomu Wen , Zhiming Yu , Yang Zhong , Wen Chen , Jing Yan
{"title":"Material selection of titanium alloy pipelines considering multi-criteria in an acidic environment based on analytic hierarchy process","authors":"Dezhi Zeng ,&nbsp;Jiancheng Luo ,&nbsp;Chengxiu Yu ,&nbsp;Guangguang Xiang ,&nbsp;Ting Mao ,&nbsp;Shaomu Wen ,&nbsp;Zhiming Yu ,&nbsp;Yang Zhong ,&nbsp;Wen Chen ,&nbsp;Jing Yan","doi":"10.1016/j.ijpvp.2025.105461","DOIUrl":"10.1016/j.ijpvp.2025.105461","url":null,"abstract":"<div><div>In the construction of offshore oil and gas projects, the selection of pipeline materials is significant and challenging. In the complex marine environment, it is difficult to ensure the safe service life of oil and gas pipelines selected only based on the consideration of the corrosion resistance of materials. Therefore, multiple performance indicators should be comprehensively considered in the material selection. The partial pressure of H<sub>2</sub>S and CO<sub>2</sub> in the oil and gas of an offshore block was as high as 2 MPa and the temperature of the transported fluid was up to 70 °C. Rock particles were carried in the fluid. In this study, TA3, TA10, and TA36 titanium alloy materials to be used in this block were evaluated through various tests, including physical and chemical tests (tensile test, impact test, bending test, and hardness test), friction wear test, gas-solid erosion test, corrosion test, and corrosion wear test. In this paper, based on the consideration of the performance indicators and expert knowledge corresponding to the above tests, a material selection method based on analytic hierarchy process was proposed and the priority in the material selection of marine pipelines was studied. In addition, the microstructures and element distributions of the tensile and impact fractures, erosion pits, and friction traces of the materials were studied by a scanning electron microscope, an energy dispersive spectroscope, and a laser confocal microscope. The results of hierarchical analysis showed that the selection priority of TA3, TA10, and TA36 titanium alloys was TA10 &lt; TA3 &lt; TA36. TA36 titanium alloy was the best material choice for the submarine pipeline system in the target area and the corresponding weight was 0.60121. The results provided the basis for the selection of the best material alternative for the construction of submarine pipelines in this block.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"216 ","pages":"Article 105461"},"PeriodicalIF":3.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143464764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Probabilistic mechanical assessment of ABWR feedwater piping to identify fractures using plant-specific parameters 利用电厂特定参数对ABWR给水管道进行概率力学评估以识别裂缝
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-08 DOI: 10.1016/j.ijpvp.2025.105456
Ru-Feng Liu
{"title":"Probabilistic mechanical assessment of ABWR feedwater piping to identify fractures using plant-specific parameters","authors":"Ru-Feng Liu","doi":"10.1016/j.ijpvp.2025.105456","DOIUrl":"10.1016/j.ijpvp.2025.105456","url":null,"abstract":"<div><div>This paper firstly proposes a statistical framework for evaluating the structural integrity of the feedwater piping of an advanced boiling water reactor with ASME III Class I piping design specification, in order to confirm its operational reliability. The process initially involves a design stress reanalysis based on the pressure piping design requirements of Article NB-3600 for ASME III Class I components to determine the sustained and vibratory stresses at node points. Plant-specific parameters of the piping system, such as pipe geometries, static and dynamic (seismic and hydrodynamic) loads, and design transients, were taken from the original design report. Moreover, the accepted results of detailed forces and moments that were obtained from the design stress reanalysis were the input data for a probabilistic fracture mechanics analysis that considered the effects of design stress, crack distribution and inspections on pipe failures. Leak probabilities at individual piping weld joints due to the growth of pre-existing and initiated cracks by the typical aging degradation mechanisms of fatigue and stress corrosion cracking were predicted as a function of time. A numerical investigation proved that the results of two-step analyses agree quantitatively to a certain extent. Based on the assessment, the failure risk of piping system is clarified and can be regarded as the basis of relevant safety regulations and subsequent maintenance activities during the operation of a nuclear power plant.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"215 ","pages":"Article 105456"},"PeriodicalIF":3.0,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation microstructure and corrosion behavior of different keyhole TIG welded joints of duplex stainless steel grade 2205 pipe 2205双相不锈钢管不同锁孔TIG焊接接头的组织与腐蚀行为评价
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-08 DOI: 10.1016/j.ijpvp.2025.105459
Meng Zhang , Jinjun Ma , Jiajian Huang , Xin Luo , Fuxing Yin , Fujian Guo , Xinxin Wang , Jianglong Yi
{"title":"Evaluation microstructure and corrosion behavior of different keyhole TIG welded joints of duplex stainless steel grade 2205 pipe","authors":"Meng Zhang ,&nbsp;Jinjun Ma ,&nbsp;Jiajian Huang ,&nbsp;Xin Luo ,&nbsp;Fuxing Yin ,&nbsp;Fujian Guo ,&nbsp;Xinxin Wang ,&nbsp;Jianglong Yi","doi":"10.1016/j.ijpvp.2025.105459","DOIUrl":"10.1016/j.ijpvp.2025.105459","url":null,"abstract":"<div><div>To analyze how the chemical composition and heat input influence the microstructure, mechanical properties, and corrosion resistance of the 2205 Duplex stainless steel (DSS) weld metal, different 2205 DSS pipeline weld joints were fabricated by the K-TIG welding process with and without 2209 filler metal. Subsequently, a comparative analysis on the microstructure evolution and corrosion behavior was systematically conducted. The result show that the microstructure of the weld metal (WM) in different welding joints primarily is consisted of the ferrite matrix, grain boundary austenite (GBA), widmänstten austenite (WA), and intergranular austenite (IGA). The cover weld of K-TIG-Wire joints contains a higher volume of austenite and predominantly IGA, compared to other joints. In addition, from EBSD observations, it was found that the grain size in the root weld of the K-TIG + Wire joint is slightly refined. Meanwhile, the low angle grain boundaries (LAGBs, 2°≤ θ ≤ 5°) increased from 0.02 to 0.24 in the root weld of the K-TIG + Wire joint when compare to that of WM in the K-TIG joint. Besides, the Vickers hardness of the cover weld metal (WM) in K-TIG + Wire joints is significantly higher than that of other specimens, attributed to higher alloy element and austenite phase content. Based on the results obtained from corrosion testing and the subsequent analysis of the corroded morphologies, the corrosion resistance of the samples can be ordered as follows: Cover WM of K-TIG + Wire &gt; Root WM of K-TIG + Wire &gt; WM of K-TIG. These results indicate that the higher alloy content of the filling wire and heat input of the multi-pass welding process exerts a significantly positive effect on the mechanical and corrosion properties of the 2205 DSS WM.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"215 ","pages":"Article 105459"},"PeriodicalIF":3.0,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parameter-mechanical properties regression model and fine grain strengthening phenomenon of Mg-9Al-Zn magnesium alloy weldments prepared by FSW FSW制备Mg-9Al-Zn镁合金焊接件参数力学性能回归模型及细晶强化现象
IF 3 2区 工程技术
International Journal of Pressure Vessels and Piping Pub Date : 2025-02-06 DOI: 10.1016/j.ijpvp.2025.105460
Kun Chen , Yuanpeng Liu , Guang Zeng , Zhenghe Wang , Meixin Ge , Kaixuan Li
{"title":"Parameter-mechanical properties regression model and fine grain strengthening phenomenon of Mg-9Al-Zn magnesium alloy weldments prepared by FSW","authors":"Kun Chen ,&nbsp;Yuanpeng Liu ,&nbsp;Guang Zeng ,&nbsp;Zhenghe Wang ,&nbsp;Meixin Ge ,&nbsp;Kaixuan Li","doi":"10.1016/j.ijpvp.2025.105460","DOIUrl":"10.1016/j.ijpvp.2025.105460","url":null,"abstract":"<div><div>The solid-state joining of Mg-9Al-Zn magnesium alloy under multi-parameter interaction was carried out by friction stir welding (FSW). A mathematical relationship between welding parameters and mechanical properties was established. The macro-micro detection was carried out by using laser scanning confocal microscope (LSCM) and scanning electron microscope energy dispersive spectrometer (SEM-EDS), and the mechanism of different parameters affecting the mechanical properties and microstructure evolution was revealed. The results indicate that the influence of welding parameters on the mechanical properties of the joint follows the order: \"rotational speed &gt; press-in volume &gt; welding speed”. LSCM shows that there are obvious high-frequency vibration folds on the weld surface, which affect the fatigue resistance and corrosion resistance of the joint. Fine grain reinforcement is the main mechanism affecting weld mechanical properties, with weld hardness closely correlating with its size distribution trend. The morphology of the tensile fracture exhibited characteristics of quasi-cleavage fracture, with precipitated phases such as Al<sub>6</sub>Mn and AlMnSi observed in the fracture area. A high welding speed accelerates the migration of silicon (Si) and promotes its accumulation at the edge of the stirring zone, which increases the brittleness of the alloy. At a rotational speed of 400 rpm, a welding speed of 70 mm/min, and a reduction of 0.15 mm, the precipitated phases of Al<sub>6</sub>Mn and AlMnSi in the weld are evenly distributed, showing no Si accumulation. The fracture surface displays weak dimple characteristics, and the mechanical properties of the weld are optimized, reaching 146.15 % of the strength of the base metal.</div></div>","PeriodicalId":54946,"journal":{"name":"International Journal of Pressure Vessels and Piping","volume":"214 ","pages":"Article 105460"},"PeriodicalIF":3.0,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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