Welding in the World最新文献_第9页

Modification of electro gas weld metal microstructure reflecting mechanical property specifications in cruise vessel shipbuilding 邮轮造船中反映机械性能规范的气体保护焊缝金属微观结构改性

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-29 DOI: 10.1007/s40194-024-01779-5

Richard Banaschik, Oliver Brätz, Andreas Gericke, Knuth-Michael Henkel

{"title":"Modification of electro gas weld metal microstructure reflecting mechanical property specifications in cruise vessel shipbuilding","authors":"Richard Banaschik, Oliver Brätz, Andreas Gericke, Knuth-Michael Henkel","doi":"10.1007/s40194-024-01779-5","DOIUrl":"10.1007/s40194-024-01779-5","url":null,"abstract":"<div><p>To identify the microstructural factors effecting the electro gas welding (EGW) weld metal properties, this study investigated the influence of different prototype welding consumables and shielding gases on the microstructural composition and mechanical-technological properties. The aim was to adjust the weld metal properties as a trade-off between strength, ductility, and impact toughness to fulfill typical weld metal material specifications in cruise vessel shipbuilding under consideration of the manufacturing conditions at European shipyards. The microstructure is analyzed by quantitative metallography of the ferritic matrix, martensite-retained austenite (M/A) constituents, and non-metallic inclusions (NMI). The influence of the Ni content, the deoxidation concept by variation of Si and Ti contents, and different shielding gas activity by variation of the Ar proportions is discussed. The interaction of ferritic matrix with high acicular ferrite content of about 70 ± 10%, the existence of larger grain boundary ferrite formations, and the M/A morphology plus distribution are considered as the determining factors for the material properties.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 6","pages":"1625 - 1639"},"PeriodicalIF":2.4,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01779-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140830089","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

Investigation of the effects of beam oscillations in electron beam–welded S1100M TMCP steel 电子束焊接 S1100M TMCP 钢中束流振荡影响的研究

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-26 DOI: 10.1007/s40194-024-01765-x

Raghawendra P. S. Sisodia, Marcell Gáspár, Sumit Ghosh, Erika Hodúlová

{"title":"Investigation of the effects of beam oscillations in electron beam–welded S1100M TMCP steel","authors":"Raghawendra P. S. Sisodia, Marcell Gáspár, Sumit Ghosh, Erika Hodúlová","doi":"10.1007/s40194-024-01765-x","DOIUrl":"10.1007/s40194-024-01765-x","url":null,"abstract":"<div><p>The development of thermomechanically controlled processed (TMCP) high-strength steel (HSS) has significantly contributed to designing and developing the intricate structural components. It has broader applications in the cranes and lifting process industry (base frame, crane jibs, and crane columns), trailers, agricultural and forestry machinery, earth-moving equipment, etc. However, the development of new-grade steels with higher tensile strength led to higher requirements for welded joints, and the associated weldability issues have inspired detailed studies on electron beam welding (EBW) with different beam oscillations. Beam oscillation application with EBW processes improves the welding efficiency, weld quality, weld geometry, keyhole, etc., affecting the welded joints mechanical and microstructural properties. Thus, the present study investigates the impact and comparison of various beam oscillations on the microstructural and mechanical properties of EB-welded S1100M steel. The influence of welding parameters on the microstructure of welded joints was analyzed using a scanning electron microscope (SEM) and electron backscattered diffraction (EBSD). The analysis focused on evaluation of grain sizes, morphologies, distributions, and crystallographic orientations of different phase constituents in fusion zone (FZ) and heat-affected zone (HAZ). The mechanical properties were analyzed using hardness, tensile, and Charpy V-notch impact tests. The texture in the FZ is typically random, while the HAZ typically exhibits a strong rolling texture. In general, the cooling rate in EBW is very fast, possibly resulting in a fine-grained structure and reduced formation of coarse second-phase particles in the weld zone. The elliptical beam oscillation showed the highest hardness in HAZ 450 HV10. Elliptical beam oscillation slightly improves the welded joint’s tensile strength, and the impact test showed mixed fracture behavior.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 6","pages":"1525 - 1537"},"PeriodicalIF":2.4,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01765-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140810569","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

Correction: Study on precise weld diameter validations by comparing destructive testing methods in resistance spot welding 更正：通过比较电阻点焊中的破坏性测试方法验证精确焊缝直径的研究

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-24 DOI: 10.1007/s40194-024-01778-6

Christian Mathiszik, Johannes Koal, Jörg Zschetzsche, Uwe Füssel, Hans Christian Schmale

引用次数: 0

The microstructure and wear behavior of WC-reinforced diamond composite coating WC 增强金刚石复合涂层的微观结构和磨损行为

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-24 DOI: 10.1007/s40194-024-01769-7

Qilong Wu, Weimin Long, Lei Zhang, Chenying Zhu

{"title":"The microstructure and wear behavior of WC-reinforced diamond composite coating","authors":"Qilong Wu, Weimin Long, Lei Zhang, Chenying Zhu","doi":"10.1007/s40194-024-01769-7","DOIUrl":"10.1007/s40194-024-01769-7","url":null,"abstract":"<div><p>Herein, diamond and diamond/WC composite coating were deposited on the surface of 45 steel by induction brazing. The microstructures of the composite coating were studied by scanning electron microscope, energy dispersive spectrometer, and X-ray diffractometer, and the wear resistance of the composite coating was assessed by rubber wheel abrasion test. The microstructure investigation indicates that both Cr<sub>3</sub>C<sub>2</sub> and Cr<sub>7</sub>C<sub>3</sub> carbides are formed at the interface between the diamond and BNi-2 alloy matrix, and Ni<sub>2</sub>W<sub>4</sub>C and NiW was formed at the interface between WC and BNi-2 alloy matrix. When WC is added to the diamond coating, the microhardness of the BNi-2 alloy matrix increases, and the microhardness of the BNi-2 alloy matrix reaches 583 HV0.2, which is 7.6% higher than that of the coating without WC. In addition, after 120 min wear test, the wear loss of the diamond WC composite coating is 0.337g, which is reduced by 31.5%. In the wear tests, abrasive wear was the main wear mechanism for composite coating. WC particles in diamond/WC composite coating improved the wear resistance and hardness of the alloy matrix.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 7","pages":"1685 - 1692"},"PeriodicalIF":2.4,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140662696","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

Ti–Zr–Cu–Co–Fe amorphous/nanocrystalline brazing filler metals for joining Ti-6Al-4V alloy 用于连接 Ti-6Al-4V 合金的 Ti-Zr-Cu-Co-Fe 非晶/纳米晶钎焊填充金属

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-23 DOI: 10.1007/s40194-024-01776-8

Rao Peng, Yan Si, Huyang Li, Xueyin Bai, Shujie Pang, Huaping Xiong, Tao Zhang

{"title":"Ti–Zr–Cu–Co–Fe amorphous/nanocrystalline brazing filler metals for joining Ti-6Al-4V alloy","authors":"Rao Peng, Yan Si, Huyang Li, Xueyin Bai, Shujie Pang, Huaping Xiong, Tao Zhang","doi":"10.1007/s40194-024-01776-8","DOIUrl":"10.1007/s40194-024-01776-8","url":null,"abstract":"<div><p>A novel Ti<sub>50</sub>Zr<sub>30</sub>Cu<sub>8</sub>Co<sub>7</sub>Fe<sub>5</sub> (at.%) amorphous/nanocrystalline brazing filler metal (BFM) with low Cu content and low liquidus temperature (1154 K) was developed and prepared into a flexible ribbon by melt-spinning for brazing Ti-6Al-4V (Ti64) alloy. The effects of vacuum brazing temperature and holding time on the microstructure and mechanical properties of the joints were investigated. For the joint brazed at a low brazing temperature of 1173 K for 15 min, a messy segregated layer consisted of α-Ti, β-Ti, and Ti<sub>2</sub>Cu intermetallic compound was formed in the center of the braze zone, resulting in relatively low tensile shear strength (~ 310 MPa) of the joint. With the brazing temperature increasing up to 1233 K, the joints exhibited uniform Widmanstätten structure mainly consisting of acicular α-Ti, β-Ti, and sporadic Ti<sub>2</sub>Cu intermetallic compound without segregated layer. The Ti64 joint brazed at 1233 K for 15 min possesses an improved tensile shear strength of ~ 400 MPa. By extending the holding time to 30 min and 45 min at the brazing temperature of 1233 K, the amount of Ti<sub>2</sub>Cu intermetallic compound in the braze zone decreased, leading to the high strength of the joints up to ~ 446 and ~ 491 MPa, respectively.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 9","pages":"2473 - 2483"},"PeriodicalIF":2.4,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140669170","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

Microstructure and hydrogen embrittlement of Q690 bainitic steel welded using electron beam 使用电子束焊接 Q690 贝氏体钢的微观结构和氢脆现象

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-23 DOI: 10.1007/s40194-024-01770-0

Pengcong Yang, Kuijun Fu, Yumin Wu, Jiaji Wang, Fengya Hu, Yulai Song

引用次数: 0

Fatigue and failure behaviour of friction welded steel joints under normal and shear stresses 摩擦焊接钢接头在法向应力和剪切应力作用下的疲劳和失效行为

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-22 DOI: 10.1007/s40194-024-01774-w

Jörg Baumgartner, Lorenz Uhlenberg, Frank Trommer, Ann-Christin Hesse, Markus Köhler, Klaus Dilger

引用次数: 0

Fatigue life evaluation of welded joints under multiaxial loading for different stress concepts using an extended Gough-Pollard criterion 使用扩展的戈夫-波拉德准则评估不同应力概念下多轴载荷焊接接头的疲劳寿命

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-17 DOI: 10.1007/s40194-024-01716-6

N. M. Bauer, J. Baumgartner, M. Fass

{"title":"Fatigue life evaluation of welded joints under multiaxial loading for different stress concepts using an extended Gough-Pollard criterion","authors":"N. M. Bauer, J. Baumgartner, M. Fass","doi":"10.1007/s40194-024-01716-6","DOIUrl":"10.1007/s40194-024-01716-6","url":null,"abstract":"<div><p>Fatigue life evaluation of welded joints under multiaxial loading usually refers to stresses normal to the weld and shear stresses. Stresses parallel to the weld are not considered in most experiments or the well-known Gough-Pollard criterion. Hence, the Gough-Pollard criterion has recently been extended to include all stress components at the weld surface. In this paper, both the original and, for the first time, the extended Gough-Pollard criterion are applied to different welded specimens under multiaxial loading that includes stresses parallel to the weld. As shown, the original criterion is insufficient to evaluate such stress states. This is because the calculated fatigue life becomes less conservative as the stresses parallel to the weld become more significant. The extended criterion, on the other hand, shows greatly improved accuracy while significantly reducing the likelihood of non-conservative results. In conclusion, the extended Gough-Pollard criterion can describe fatigue life under multiaxial loading better than the original version and provides reliable and conservative results for welded joints. The main findings are valid for the nominal, the hot spot, and the notch stress concept.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 8","pages":"2141 - 2155"},"PeriodicalIF":2.4,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40194-024-01716-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140615728","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 copper interlayer in dissimilar TA6V/AU4G rotary friction weld joints 铜夹层对异种 TA6V/AU4G 旋转摩擦焊焊点的影响

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-12 DOI: 10.1007/s40194-024-01771-z

Houssem Eddine Lakache, Abdelghani May, Riad Badji, Nathalie Poirot, Slimane Nasre Eddine Reguieg Yssaad

{"title":"Effect of copper interlayer in dissimilar TA6V/AU4G rotary friction weld joints","authors":"Houssem Eddine Lakache, Abdelghani May, Riad Badji, Nathalie Poirot, Slimane Nasre Eddine Reguieg Yssaad","doi":"10.1007/s40194-024-01771-z","DOIUrl":"10.1007/s40194-024-01771-z","url":null,"abstract":"<div><p>Welding titanium to aluminum alloys is difficult and challenging due to the differences in their chemical and physical properties. The aim of this research is to investigate the effect of integrating a pure copper (Cu) interlayer on the mechanical behavior and the microstructure of the dissimilar TA6V/AU4G Rotary Friction Weld (RFW) joints. Tensile tests and microhardness measurements were conducted to demonstrate the mechanical behavior of the RFW joints. Microscopic observations were carried out to identify the structural nuances and quality of the weld joint. Energy Dispersive X-Ray (EDX) analysis was performed to reveal the interdiffusion phenomenon at the weld interfaces, and the present phases were identified through X-Ray Diffraction (XRD) analysis. The results suggest that adding a Cu-interlayer changes the flow direction of thermoplastically deformed material, leading to an increase in the Ultimate Tensile Strength (UTS) value up to 393.34 MPa. The microhardness profile of the TA6V/Cu/AU4G RFW joint is similar to that of the TA6V/AU4G joint, except for noticeable difference at the interface. In addition, the use of a Cu-interlayer has been shown to be more effective in preventing the formation of brittle TiAl<sub>3</sub> intermetallic compounds (IMCs) compared to direct TA6V/AU4G welds. The inclusion of a Cu-interlayer results in a significant improvement in joint efficiency by 105.32%, demonstrating the effectiveness of the Cu-interlayer in enhancing the mechanical properties of the dissimilar TA6V/AU4G RFW joints.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 7","pages":"1869 - 1879"},"PeriodicalIF":2.4,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140581426","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

Effect of filler paste’s mixing ratio on the properties of Al-64430 dip-brazed joints 填充膏混合比对 Al-64430 浸辫接头性能的影响

IF 2.4 4区材料科学

Welding in the World Pub Date : 2024-04-11 DOI: 10.1007/s40194-024-01772-y

Siddharth Garg, Qasim Murtaza

{"title":"Effect of filler paste’s mixing ratio on the properties of Al-64430 dip-brazed joints","authors":"Siddharth Garg, Qasim Murtaza","doi":"10.1007/s40194-024-01772-y","DOIUrl":"10.1007/s40194-024-01772-y","url":null,"abstract":"<div><p>This study compares the paste/slurry formed by different filler mixing ratios (filler metal powder: DM water [wt.%/wt.%]) used to fabricate dip-brazed joints for Al-64430. Eight different filler ratios were selected, namely 1:5, 1:4, 1:3, 1:2, 1:1, 5:4, 2:1 and 3:1. The fabricated samples were tested for bump test, microhardness, tensile strength and surface deformation. Maximum microhardness and tensile strength were observed at a 5:4 mixing ratio. Both the values increased until the 5:4 mixing ratio (450% increase in microhardness and a 5400% increase in tensile strength compared to a 1:4 mixing ratio sample), after which they declined (3% decrease in microhardness and a 35% decrease in tensile strength). Surface deformation of the samples remained almost constant throughout, although these values were 10–20 times less than those of samples produced by conventional welding operations. Microstructural analysis revealed dendrite formation at the brazed joints. Voids and cracks were also detected in some samples. Al-Si eutectic matrix and <span>(alpha)</span>-aluminium were visible at the joint. SEM analysis was carried out to determine the silicon state in the matrix, which displayed the presence of both primary and eutectic silicon. EDX analysis showed that the silicon concentration at the joint increased as the filler ratio increased, and this silicon concentration played a major role in determining the strength and hardness of the joints.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 9","pages":"2459 - 2471"},"PeriodicalIF":2.4,"publicationDate":"2024-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140581721","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