Article
Materials Science, Multidisciplinary
Huan He, Zhaoxian Liu, Lixin Zhang, Wenzhen Zhao, Ao Fu, Xiaoyang Yi
Summary: The joining of aluminum alloy and Ti-Ni-Hf shape memory dissimilar metals was achieved by cold metal transfer (CMT) welding-brazing with an Al-based filler. The relationship between heat input, microstructures, and joint strength was investigated. The joint consisted of three regions: the Al/SMA brazing interface, weld metal zone, and Al-weld metal zone. The interfacial intermetallic compound (IMC) with a strip or needle-like morphology was identified as TiAl3. The IMC exhibited an inhomogeneous morphology along the brazing interface. The Ti-Ni-Hf SMA adjacent to the interface retained reversible martensitic transformation and its phase transition temperature slightly increased with distance from the interface. Increasing heat input led to an increase in IMC thickness and a decrease in joint strength. The maximum tensile strength achieved was 122 MPa at a heat input of 553.6 J/mm. Fracture initiation occurred at the interface between the IMC and Ti-Ni-Hf and propagated along the interface.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Zhijie Zhang, Jian Huang, Chenwu Yao, Xing Zhang
Summary: In this study, a novel method was proposed to fabricate Ag alloyed aluminum weld and Ti/Al interface zone by adding silver mesh interlayer in TA2/AA5150 dissimilar joints. The results showed that the aluminum grains in the weld with Ag were finer and the growth of aluminum dendrites was inhibited by the MgAg phase. Moreover, the shear strength of the joints significantly increased with the addition of the silver mesh.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ambadas Basude, Adepu Kumar, George Rajasingh, Krishna Kishore Mugada
Summary: In this study, a dissimilar metal joint between Titanium alloy and pure Aluminium was achieved using vacuum brazing technique. The joint strength was evaluated by varying the overlaps, and characterization studies were conducted.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Xueyin Bai, Minqian Liu, Shujie Pang, Huaping Xiong, Xinyu Ren, Haishui Ren, Tao Zhang
Summary: Novel Ti-based amorphous/nanocrystalline alloys with low liquidus temperatures were developed as brazing filler metals to enhance the mechanical properties of titanium alloy brazed joints. The joints brazed with Ti-Zr-Co-Cu-V(Al) fillers showed improved tensile shear strength and impact toughness compared to those brazed with Ti-Zr-Co-Cu-Sn fillers. The Ti-Zr-Co-Cu-Al amorphous/nanocrystalline filler is a promising brazing material for joining titanium alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Metallurgy & Metallurgical Engineering
Wanghui Xu, Huan He, Yaoyong Yi, Haiyan Wang, Chen Yu, Weiping Fang
Summary: Using twin-wire CMT with Al-Si filler enables dissimilar joining of materials, showing typical characteristics of common steel/aluminum weld brazing joints. Intermetallic compounds (IMCs) were found next to the steel and aluminum, with a total thickness of 2-4 micrometers. Proper wire feeding rate and welding speed can enhance wetting characteristics, while excessive heat input can decrease mechanical properties.
WELDING IN THE WORLD
(2021)
Article
Materials Science, Multidisciplinary
Tianyu Xu, Shaowei Zhou, Han Wu, Xiuquan Ma, Huailiang Liu, Meng Li
Summary: The zero-gap laser lap welding of steel and aluminum filled with TiC particles of different sizes was studied in this research. The addition of 10 µm and 50 µm TiC particles reduced defects and refined grains, while also improving mechanical properties. The 50 µm TiC filled joint showed certain plasticity compared to mainly brittle fractures in other samples.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Shengwei Zhang, Kun Gao, Sung-Tae Hong, Hyunuk Ahn, Yoongil Choi, Siwhan Lee, Heung Nam Han
Summary: The lap joining of dissimilar steel and aluminum alloy sheets in the solid state using electrically assisted pressure joining (EAPJ) method was successful, with joint strength increasing with higher electric current density and holding time at elevated temperature. Microstructural analysis and quasi-static lap shear tensile testing were conducted to confirm the solid-state joining and joint strength enhancement.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Automation & Control Systems
Joon Ho Cha, Hae Woon Choi
Summary: Laser welding offers many advantages in the manufacturing of EV battery packs, with the ability to optimize results and tensile strength by adjusting output ratios and other conditions. Increasing power may widen weld seams and form small pores, but penetration depth does not significantly change.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Byungmin Ahn
Summary: Brazing fillers play a crucial role in joining applications, and have been widely used in manufacturing and design to connect similar or different engineering materials. While bringing convenience to life, issues such as the formation of intermetallic compounds and residual stresses at high temperatures may occur.
Article
Metallurgy & Metallurgical Engineering
Linlin Yuan, Wei Wang, Xiaomeng Huang, Yuefeng Qi, Xiaoying Li
Summary: In this study, Cu-Sn-Ti active brazing alloys were prepared and their microstructure and melting properties were analyzed. The optimal 87Cu-8Sn-5Ti paste was used for Al2O3/Cu brazing and achieved sound joints. The joint microstructures mainly consisted of TiO, Cu3Ti3O, and Cu-Ti compounds. The maximum tensile strength of the brazed joints reached 154 MPa.
WELDING IN THE WORLD
(2022)
Review
Engineering, Industrial
Jin Yang, J. P. Oliveira, Yulong Li, Caiwang Tan, Chenkai Gao, Yixuan Zhao, Zhishui Yu
Summary: The use of multi-material structures is an effective solution to reduce weight and emissions in the automotive industry. However, joining aluminum alloys to steels is challenging due to their mismatched properties. Laser-based processes have been explored to overcome this issue and this review examines the recent achievements and progress in this field, evaluating factors such as joining conditions, filler materials, microstructure, and mechanical properties.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Review
Automation & Control Systems
Jintao Wang, Xing Fu, Luobin Zhang, Zheng Zhang, Jiahao Liu, Si Chen
Summary: The review of laser welding/brazing of aluminum alloy to steel demonstrates the potential application prospects in Fe/Al dissimilar metal bonding, with a focus on technological factors such as laser source selection, temperature control, and filler metal selection. The relationship between microstructure and mechanical properties of the intermetallic reaction layer in the Fe/Al joint by laser welding is highlighted in this study.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
S. Muhammad H. Hoseini, S. Ali Hoseini, S. Abolfazl Hoseini, H. Khorsand
Summary: The aim of this study is to braze alumina ceramic to stainless steel 321L and investigate its strength and microstructure properties. The optimal temperature and time for the brazing process were obtained by conducting optical microscopy, scanning electron microscopy, and shear testing. X-ray diffraction analysis and SEM were used to analyze fracture surfaces.
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Haokun Sun, Xin Chu, Cheng Luo, Haoxiu Chen, Zhiying Liu, Yansong Zhang, Yu Zou
Summary: The study explores the feasibility of joining dissimilar materials and in situ alloying using SLM technology. Pure Al and Cu powders are found to join stainless steel through diffusion and melting, while an Al-Cu alloy with uniformly distributed elements can be produced using mixed powders in the SLM process.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2021)
Article
Optics
Ying Xu, Hengchang Bu, Feiyun Wang, Wanping Ma, Xiaohong Zhan
Summary: This paper investigates the laser joining of CFRTP and titanium alloy, and verifies the effectiveness of the joining process through numerical simulations and experiments. The results show that the tensile failure load of the joint meets the requirements under the optimized process parameters, and the fatigue failure mode under cyclic loading has also been studied.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)