Article
Materials Science, Multidisciplinary
Umesh Kumar Singh, Avanish Kumar Dubey
Summary: Friction Stir Welding is an effective welding method for magnesium alloys, but the process parameters have a significant influence on the weld characteristics of different alloys, with rotational speed and tool shoulder diameter being the most critical parameters.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
N. Pallavi Senapati, R. K. Bhoi
Summary: This paper presents an experimental analysis of Friction Stir Welding of AA1100 aluminum alloy using a square pin tool, showing higher temperature in the advancing side of the weld compared to the retreating side. It also reveals that the ultimate tensile strength of the welded specimen is increased due to the uniform dispersion of silicon particles in the base material, leading to the formation of equiaxed grains in the nugget region of the weld. Additionally, X-ray diffraction results indicate the formation of alumina in the weld nugget, and residual stress measurements show different distributions based on welding parameters.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2021)
Article
Materials Science, Multidisciplinary
Hrishikesh Das, Rajib Kalsar, Shivakant Shukla, Sam Yaw Anaman, Piyush Upadhyay, Hoon-Hwe Cho
Summary: This work investigates the microstructural evolution of a dissimilar multiple-aluminum alloy stack produced by friction stir lap welding, and analyzes the effects of welding parameters on the microstructural characteristics. The study reveals the formation of shear texture due to high welding speeds and the presence of recrystallization mechanisms. Interface analysis shows the presence of oxide layers, affecting the joint mechanical performance. The study also presents the mechanical property of the lap welded joints in terms of microhardness distribution.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Najib A. Muhammad, ChuanSong Wu, Hao Su
Summary: Dissimilar joints made of aluminium alloy and copper were produced using friction stir welding and ultrasonic vibration-assisted friction stir welding processes with different tool offset degrees. Tool offset towards the Al base material and in the Al/Cu interface produced defect-free joints with sound strengths, while tool offset towards the Cu base material resulted in unsound joints with defective features. Ultrasonic vibration addition significantly reduced the thickness of the intermetallic compound layer and affected the sizes and distribution of Cu particles in the weld nugget. Joints made with ultrasonic vibration exhibited higher tensile strength compared to conventional FSW joints.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Industrial
Jiaqing You, Yunqiang Zhao, Chunlin Dong, Yunhai Su
Summary: In this study, an ultrasonic dynamic-stationary shoulder friction stir method was designed to reduce the IMC thickness and residual stress, thereby enhancing the mechanical properties of Al-Cu joints. The new method allowed for the elimination of microcracks, grain refinement, enhanced dynamic recrystallization, and reduced IMC thickness, resulting in high-strength Al-Cu dissimilar metals welding.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Engineering, Civil
Arabinda Meher, Manas Mohan Mahapatra
Summary: Understanding the microstructural and mechanical behavior of friction stir welded magnesium matrix composites is important for their applications in automobile and aerospace components. In this study, friction stir welding of magnesium RZ5/8 wt% TiB2 metal matrix composites was carried out under different joining conditions. It was found that better grain refinement and uniform distribution can be achieved at specific tool rotational speed and traverse speed. The highest temperature, hardness, and tensile strength were observed in the nugget zone. Additionally, high residual stresses were observed near the weld zone.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Automation & Control Systems
Gang Chen, Kai Wu, Yu Wang, Zhixiong Zhu, Pan Nie, Fengfeng Hu
Summary: Additive friction stir deposition (AFSD) is an alternative to fusion-based additive manufacturing technology, allowing the creation of fully dense structures without melting and solidification. This study investigates the influence of AFSD parameters on the mechanical properties and microstructure of 6061 aluminum alloy. The results show that the as-deposited alloy has a relatively homogeneous microstructure with equiaxed grains. Compared to the feedstock material, the ultimate tensile strength of the as-deposited alloy decreases, while continuous dynamic recrystallization occurs. The grain size and ultimate tensile strength are positively correlated with feed rate and rotational speed, while the elongation at break decreases with increasing feed rate and rotational speed.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yu Su, Wenya Li, Xichang Liu, Fuyang Gao, Yan Yu, Achilles Vairis
Summary: This study investigated the microstructure, texture, and mechanical properties of T-joints of an alpha titanium alloy welded by friction stir welding. The results showed that the welding temperature affected the grain morphology, with the highest hardness in the stir zone and the lowest in the heat-affected zone. Tensile strength and impact toughness of the joint varied with rotational speed or welding speed.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Multidisciplinary
Syed Farhan Raza, Muhammad Amjad, Muhammad Salman Habib, Naveed Ahmed, Fahid Riaz
Summary: This research investigates the effects of friction stir welding (FSW) parameters on the weld temperature, strength, and hardness of yellow brass 405-20. The study includes both numerical simulations, such as transient thermal analysis and static structural analysis, and empirical validations. The results show a maximum temperature of 598 degrees C during FSW, a joint strength of 228 MPa, and underlying mechanisms for the lower weld strength compared to the parent material.
APPLIED SCIENCES-BASEL
(2023)
Article
Materials Science, Multidisciplinary
Shubham Verma, Velaphi Msomi, Sipokazi Mabuwa, Ali Merdji, Joy Prakash Misra, Usha Batra, Sandeep Sharma
Summary: This paper employs machine learning techniques to predict the tensile behavior of friction stir processed dissimilar aluminium alloys joints, with support vector machine_radial basis function kernel as the most accurate modeling technique. The use of optical microscope shows that FSP samples with the smallest grain size correspond to high ultimate tensile strength, with fractographic analysis indicating ductile behavior.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Polymer Science
Ahmed I. Alhatti, Jamal Sheikh-Ahmad, Fahad Almaskari, Kamran A. Khan, Suleyman Deveci, Abdelrahman I. Hosny
Summary: This study investigates the effectiveness of a tapered fluted pin tool design in the friction stir lap welding (FSLW) technique for creating hybrid joints between AA5052 aluminium alloy and polypropylene (PP). The optimal welding parameters were found to be a rotational speed of 1400 RPM and a traverse speed of 20 mm/min, resulting in a joint tensile strength of 3.8 MPa. The microstructural evaluations revealed a unique composite of aluminium chips intermeshed with PP, strengthened further by aluminium hooks. Mechanical interlocking plays a predominant role over chemical bonding in achieving this joint strength.
Article
Materials Science, Multidisciplinary
R. Saravanakumar, T. Rajasekaran, C. Pandey, M. Menaka
Summary: Friction Stir Welding (FSW) is a promising technique for joining aluminum composites. Underwater friction stir welding (UWFSW) is a futuristic technology with advantages such as minimal distortion and excellent joining strength. This study examines the effect of UWFSW on the mechanical properties and microstructure characteristics of AA5083 armor-grade aluminum.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Chemistry, Physical
Pisit Kaewkham, Wasawat Nakkiew, Adirek Baisukhan
Summary: The main purpose of this research was to enhance the mechanical properties of friction stir welds (FSW) in dissimilar aluminum alloys. Through controlling welding process parameters and conducting heat treatment and deep rolling compression, the tensile strength and fatigue life of the welded workpieces were improved.
Article
Materials Science, Multidisciplinary
Mahdi Mahmoudiniya, Leo A. Kestens
Summary: Microstructure development and texture evolution during friction stir welding of DP700 dual-phase steel were investigated in this study. Continuous dynamic recrystallization was found to be the predominant mechanism for ferrite recovery, with additional geometrically dynamic recrystallization observed in the thermomechanically affected zone. Different shear texture components were formed in various regions due to different thermomechanical conditions.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Xiawei Yang, Tingxi Meng, Yu Su, Zhiwei Qi, Dong Wu, Achilles Vairis, Wenya Li
Summary: This study investigates the relationship between microstructure, mechanical properties, and residual stress of 2219 aluminum alloy joints before and after being coated with cold spraying. The results show that cold spraying can improve the mechanical properties and reduce residual stress of the joints.
MATERIALS CHARACTERIZATION
(2023)
Review
Materials Science, Multidisciplinary
Xiushuo Zhang, Yu'e Ma, Wenya Li, Wei Huang, Weihong Zhang, ZhenHai Wang
Summary: This review summarizes the experimental, theoretical, and numerical studies on the effects of residual stresses on the fatigue characteristics of friction stir welds (FSWs). It also presents the applications of residual stress modification techniques for improving fatigue performance in FSWs.
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
(2023)
Article
Chemistry, Physical
Tao Jiang, Tao Jiao, Guoqing Dai, Zhikang Shen, Yanhua Guo, Zhonggang Sun, Wenya Li
Summary: This study investigated the microstructure evolution and mechanical properties of 2060 aluminum lithium alloy manufactured via friction stir additive manufacturing (FSAM). The results demonstrate that the optimal combination of process parameters can result in finer equiaxed grains and higher microhardness.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Chaoyue Chen, Yingchun Xie, Shuo Yin, Wenya Li, Xiaotao Luo, Xinliang Xie, Ruixin Zhao, Chunming Deng, Jiang Wang, Hanlin Liao, Min Liu, Zhongming Ren
Summary: This work successfully prepared pure Cu with excellent strength and ductility using cold spray additive manufacturing (CSAM) technology, and revealed the microstructure evolution, strengthening, and ductilization mechanisms. The results showed that CSAM Cu possesses a unique heterogeneous microstructure and can achieve synergistic strengthening and ductilization by controlling grain refinement and dislocation density. This work provides potential for the application of CSAM technology in manufacturing metallic parts.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Jiayang Lu, Wenya Li
Summary: The effect of different heat treatments on the microstructural evolution and mechanical properties of laser directed energy deposited IN718/316L functionally graded material (FGM) was investigated. It was found that the specimen treated at 1080 degrees C exhibited higher ultimate tensile strength and elongation compared to the untreated specimen and the specimen treated at 980 degrees C. The wear resistance in the building direction increased with increased In718 powder content. The heat treatment led to the dissolution of the Laves phase and reprecipitation of the delta, gamma', and gamma'' phases in the top region of the specimen, while thinner grains boundaries and a transition from ferrite to austenite were observed in the middle and bottom regions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Dong Wu, Yaxin Xu, Wenya Li, Yang Yang, Kun Liu, Wenpeng Wan, Zhiwei Qi
Summary: This study optimized the deposition window of cold spray additive manufacturing (CSAM) for high-entropy alloy (HEA), focusing on the processing parameters' impact on deposition efficiency and porosity. The optimal parameters were determined as using helium as the driving gas, with a gas inlet temperature of 700 degrees C and a spray distance of 25 mm. These conditions resulted in the thickest deposit with the lowest porosity. The choice of driving gas is crucial, with helium being necessary to achieve high-quality HEA deposits. Gas inlet temperature and spray distance have minimal effects. Furthermore, higher gas temperature and moderate spraying distance were selected to enhance particle deformation and reduce shock wave effects at the plate front.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2023)
Review
Metallurgy & Metallurgical Engineering
Yangfan Zou, Wenya Li, Zhikang Shen, Yu Su, Xiawei Yang
Summary: This paper critically reviews the current status and potential applications of refill friction stir spot welding (RFSSW) and provides an evaluation of the flow behavior, microstructure evolution, mechanical properties, corrosion behavior, and fatigue performance of aluminum alloy joints. The potential applications of RFSSW technology are also summarized, and future research directions are proposed.
WELDING IN THE WORLD
(2023)
Article
Materials Science, Multidisciplinary
Zhenguo Guo, Tiejun Ma, Xi Chen, Xiawei Yang, Jun Tao, Ju Li, Wenya Li, Achilles Vairis
Summary: In this study, a blisk composed of Ti2AlNb intermetallic alloy and Ti60 titanium alloy was successfully produced using linear friction welding, resulting in a joint with higher strength than the base metal. The intergrowth bonding mechanism at the interface was promoted by dynamic recrystallization, phase transformation, and solute element diffusion. This welding technique has significant advantages compared to conventional fusion methods and allows for expanding its industrial use.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Theano N. Examilioti, Wenya Li, Nikolai Kashaev, Volker Ventzke, Benjamin Klusemann, Murat Tiryakioglu, Nikolaos D. Alexopoulos
Summary: In this study, the anisotropic mechanical behavior of Al-Cu-Li (AA2198) alloy was investigated under different artificial ageing conditions and for different thicknesses of the material. The results showed that the grain structure did not change significantly when applying different ageing times. The major precipitates observed were T1 (Al2CuLi) phases, which increased in size with artificial ageing time. The specimens extracted in the diagonal direction showed high variation in mechanical properties compared to the other two directions investigated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Xiaofeng Yang, Yaxin Xu, Jintao Lu, Jinyang Huang, Yingying Dang, Wenya Li
Summary: The influence of fireside corrosion on the creep rupture of a Ni-Fe based model alloy was investigated. Results showed that the rupture life in fireside corrosion was only 40% of that in air. Internal sulfidation along grain boundaries promoted the initiation of intergranular cracks and resulted in premature rupture. Surface collapse in fireside corrosion was attributed to the outward propagation of internal cracks, while surface cracks in air were due to the formation of recrystallized grains in the surface layer.
Article
Materials Science, Coatings & Films
Dong Wu, Wenya Li, Xiawei Yang, Yangfan Zou, Yu Su, Yaxin Xu
Summary: This study characterizes the wear, mechanical properties, and mechanical anisotropy of 2024 aluminum alloy deposits produced through CSAM. It shows that heat treatments can improve the mechanical properties and wear resistance, but the presence of pores limits further improvements in mechanical properties.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Dong Wu, Yu Su, Yaxin Xu, Wenya Li, Xiawei Yang
Summary: This study introduces induction heat (IH) treatment for the first time to the cold spray additive manufacturing (CSAM) Cu deposit, and its effects on deposit microstructure and mechanical properties are analyzed. Results show that IH treatment reduces dislocations and prevents pore formation, but increases grain size. It also significantly improves electrical conductivity and enhances the tensile strength and elongation at break of the CSAM deposit.
Article
Materials Science, Multidisciplinary
Yangfan Zou, Wenya Li, Yishuang Tang, Yu Su, Xiawei Yang, Dong Wu, Weibing Wang
Summary: Synergistic double-sided friction stir welding (DS-FSW) is proposed as a solution to the problems of large deformation and time consumption in traditional DS-FSW. The microstructure, mechanical properties, and fracture paths of novel and conventional joints are studied under different welding parameters. Results show the improved defects in novel joints, although the grain size in the stir zone is larger. The new joint also exhibits a more uniform distribution of microhardness compared to the conventional joint. At specific rotational and transverse speeds, the novel joint has less distortion and higher tensile force than the conventional joint.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2023)
Article
Materials Science, Multidisciplinary
Pengcheng Wang, Jinzheng Li, Weihan Liu, Xin Nai, Shuai Zhao, Haiyan Chen, Wenya Li
Summary: This study investigates the use of negative thermal expansion (NTE) materials to alleviate high residual stress in brazed joints by regulating the coefficient of thermal expansion (CTE) of the metal composite filler. A new method of preparing a high-content Sc2W3O12 dispersed interlayer is proposed, increasing the optimal addition amount of Sc2W3O12 materials. The study demonstrates the potential of the proposed method for preparing brazed interlayer with high-content reinforcements and highlights practical applications in other metal composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yongxin Lu, Yuwei Zhou, Pengjun Wen, Fan Luo, Jian Cao, Youwei Xu, Shiqing Wang, Xiao Li, Xiaoyong Zhang, Wenya Li
Summary: This paper investigates the influence of laser power on the properties of K418 alloy prepared by selective laser melting. The results show that an optimal laser power can lead to the best mechanical properties, including the smallest grain size, more small-angle grain boundaries, and maximum elongation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Shuai Zhao, Xin Nai, Haiyan Chen, Peng Wang, Qian Wang, Yongsheng Liu, Pengcheng Wang, Wenya Li
Summary: This study successfully joined SiCf/SiC composites and GH536 superalloy using a high-entropy alloy filler with varying Nb element contents. The microstructural evolution and mechanical property changes of the brazed joints were systematically investigated. The presence of Nb(s, s) in the joint proved to play a vital role in transferring residual stress and impeding the movement of dislocations during joint fracture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
