Article
Engineering, Manufacturing
Yang Wenjing, Ding Hua, Li Jizhong
Summary: Friction stir processing (FSP) is an effective technique for microstructural refinement, but the weak area in the thermo-mechanically affected zone (TMAZ) has limited its practical application. The introduction of double-sided FSP (DFSP) aims to eliminate this weak zone and improve mechanical properties. Research shows that DFSP can ensure a refined and homogeneous microstructure without TMAZ, leading to enhanced mechanical properties in the alloy plates.
MATERIALS AND MANUFACTURING PROCESSES
(2022)
Letter
Chemistry, Physical
Yixing Zhu, Gaoqiang Chen, Yifan Zhou, Qingyu Shi, Mengran Zhou
Summary: In this study, the cross-pass friction stir processing method was used to refine the grain size and improve the mechanical and corrosion behaviors of a duplex Mg-Li-Al-Zn alloy. The results showed that the tensile strength and elongation of the alloy increased significantly after friction stir processing. The corrosion current density also decreased significantly after immersion in a NaCl solution, which was attributed to the unique distribution of alpha/beta phases and ultrafine MgLi2Al precipitates introduced by cross-pass friction stir processing.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Zahra Nasiri, Mahmoud Sarkari Khorrami, Hamed Mirzadeh, Massoud Emamy
Summary: Friction stir processing leads to significant grain refinement and enhancement of mechanical properties in magnesium alloys. Calcium-containing alloys show more intense grain refinement due to the presence of thermally-stable Al-Ca intermetallics. The AX43 alloy with a grain size of 1.7µm exhibits the best tensile properties.
Article
Materials Science, Multidisciplinary
L. Zhang, C. Y. Liu, B. Zhang, H. F. Huang, H. Y. Xie, K. Cao
Summary: The study fabricated equiaxed grain structure binary Al-Mg alloys with different Mg contents and grain sizes using friction stir processing (FSP). It was found that the fine grain-structured Al-Mg alloy with high Mg content exhibited higher strength and ductility.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Tao Sun, Fujun Cao, Jian Jiang, Wentao Hou, Zhihui Yang, Guoqiang Huang, Yifu Shen
Summary: Submerged friction stir processing (SFSP) is a cost-effective technique for preparing magnesium alloys with fine and uniform twin structure, leading to improved wear and corrosion resistance.
MATERIALS CHARACTERIZATION
(2023)
Article
Automation & Control Systems
Zhen Liu, Yangchuan Cai, Jie Chen, Jian Han, Zhiyong Mao, Minfang Chen
Summary: In this study, a novel Mg-Zn-Ca matrix composite reinforced with 1.0 wt.% MgO nanoparticles was prepared via high shear casting and friction stir processing (FSP). The FSP treatment significantly modified the microstructure and properties of the composites, resulting in a grain size reduction of 42% and a hardness increase of 40%. Particle strengthening was found to be more dominant than grain refinement in enhancing the properties of the composites.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Gh Asrari, M. H. Daneshifar, S. A. Hosseini, M. Alishahi
Summary: This study demonstrated the fabrication of an Al-Mg solid solution layer on a pure Al substrate using friction stir selective alloying, resulting in significantly increased hardness compared to the original sample.
Article
Biotechnology & Applied Microbiology
Ke Qiao, Ting Zhang, Kuaishe Wang, Shengnan Yuan, Shengyi Zhang, Liqiang Wang, Zhi Wang, Pai Peng, Jun Cai, Chaozong Liu, Wen Wang
Summary: In this study, AZ31/ZrO2 nanocomposites with good uniformity were successfully prepared by friction stir processing (FSP), achieving grain refinement and improved mechanical properties. The combination of dynamic recrystallization and ZrO2 particles led to grain refinement of the Mg alloy, with grain size averaging at 3.2 μm in the composites.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Crystallography
Matjaz Macerl, Franc Zupanic, Lara Hocurscak, Damjan Klobcar, Andras Kovacs, Tonica Boncina
Summary: The study investigated the impact of friction stir processing on the microstructure and properties of an experimental Al-Mn-Cu-Be alloy twin-roll cast strips. It was found that increasing rotational speed led to enhanced microstructure uniformity and several key processes occurring in the stir zone that positively affected alloy performance.
Article
Nanoscience & Nanotechnology
Ying Li, Changshu He, Jingxun Wei, Zhiqiang Zhang, Gaowu Qin, Xiang Zhao
Summary: This study utilized underwater friction stir additive manufacturing to fabricate a multilayered Al-Zn-Mg-Cu aluminum alloy build, establishing a relationship between local microstructures and mechanical properties. The underwater FSAM effectively reduced the thermal cycle effect and suppressed the common phenomenon of decreasing microhardness from top to bottom. Different hardness zones were observed after aging treatment, with a higher density of specific phases in certain regions affecting the overall strength and hardness differences.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Huankun Deng, Yuming Xie, Xiangchen Meng, Huizi Chen, Ranzhuoluo Zang, Yuexin Chang, Xuan Li, Long Wan, Yongxian Huang
Summary: Through the use of the up-hard and down-soft configuration, light-weight dissimilar joints of Mg-Li alloy and Mg-Al-Zn alloy were successfully achieved. This technique converted the shortcomings of conventional joints into a more stable interlocking structure, suitable for applications in spacecrafts.
WELDING IN THE WORLD
(2022)
Article
Chemistry, Physical
L. Zhang, C. Y. Liu, H. Y. Xie, H. F. Huang, J. F. Zhou, H. J. Jiang
Summary: Friction stir processing (FSP) was used to fabricate equiaxed grain structure Al-Mg-0.25Sc alloys with different Mg contents and grain sizes. The grain refinement of the FSP Al-Mg-0.25Sc alloys was achieved through Al3Sc phases, Mg atoms, and reduced FSP heat input. Increasing Mg content and grain refinement enhanced the strength and high-temperature damping value of the Al-Mg-0.25Sc alloy, while the high work hardening ability of the fine grain structure with high Mg content improved its ductility. The FSP Al-Mg-0.25Sc alloys also demonstrated high damping stability due to the grain boundary pinning effect of Al3Sc phases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Haonan Yuan, Lin Zhang, Lihong Wu, Shijie Zhu, Yufeng Sun, Shaokang Guan
Summary: The Mg-2Zn-0.46Y-0.5Nd alloy coated with a pure Zn layer using friction stir processing technique exhibited significantly reduced corrosion current density and uniform surface morphology compared to the uncoated counterpart.
Article
Nanoscience & Nanotechnology
Nan Xu, Ruo-Nan Feng, Qi-Ning Song, Jian-Hua Zhao, Ye-Feng Bao
Summary: Low-temperature friction stir processing was utilized to modify the microstructure and mechanical properties of die-cast AZ91D Mg alloy, resulting in the formation of a fine-grained structure and various strengthening mechanisms. This approach effectively increased the strength and ductility of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Multidisciplinary Sciences
N. Taheri Moghaddam, Amin Rabiezadeh, Ali Khosravifard, L. Ghalandari
Summary: This study evaluates the feasibility of using the Self-Reacting Friction Stir Welding process to weld 7039 aluminum alloy. By adjusting process factors such as shoulder pinching gap, tool transverse speed, and tool rotation speed, defect-free joints were achieved. Non-destructive testing confirms the integrity of the welds, and transverse tensile test results show higher strength of the weld joint compared to the base metal.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Metallurgy & Metallurgical Engineering
X. S. Yang, L. Zhou, K. Y. Liu, Z. Y. Liu, Q. Z. Wang, B. L. Xiao, Z. Y. Ma
Summary: The effective thermal conductivity of graphene nanoplatelet (GNP)/Al composites is influenced by factors such as the shape, aspect ratio, configuration, and volume fraction of GNPs. The study found that composites with elliptic GNPs have the highest thermal conductivity, increasing the aspect ratio of GNPs leads to an increase in thermal conductivity, and composites with layered GNPs have the highest thermal conductivity among different configurations. Additionally, the thermal conductivity is sensitive to the volume fraction of GNPs, reaching a high value when the volume fraction of layered GNPs is 1.54%.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Thermodynamics
L. Zhou, T. B. Yuan, X. S. Yang, Z. Y. Liu, Q. Z. Wang, B. L. Xiao, Z. Y. Ma
Summary: This study investigated the influence of CNT configuration, heat transfer direction, interfacial thermal resistance, and volume fraction on the effective thermal conductivity of CNT/Al composites using a 3D multiscale finite element model. The results showed that the CNT configuration played a major role in determining the thermal conductivity, with the layered configuration exhibiting the highest thermal conductivity. Additionally, the composite displayed an excellent effective thermal conductivity of 400 W/m.K when the volume fraction of CNTs was about 3.7%.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Materials Science, Ceramics
Wenfei Lu, Aihan Feng, Jun Shen
Summary: The study showed that the binding energy of icosahedral clusters decreases when the atoms in the cluster prefer to bond together, leading to relative stability. In Ni-Nb metallic glasses, the glass-forming ability is attributed to the synergistic effect of electronic stability and topological stability of icosahedral clusters.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Nanoscience & Nanotechnology
Z. L. Wang, Z. Zhang, P. Xue, D. R. Ni, Z. Y. Ma, Y. F. Hao, Y. H. Zhao, G. Q. Wang
Summary: The study found that lower welding speeds in BT-FSW result in microvoid defects in the band pattern structure on the RS of the NZ, which decrease in size with increasing welding speed, while sound joints are obtained under higher speeds. Microvoid defects exhibit an obvious effect on tensile deformation and fracture behavior of joints, with cracks initiating from these defects in the nugget zones.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Hao-Ran Jiang, Jochi Tseng, Nico Neuber, Jenifer Barrirero, Bastian Adam, Maximilian Frey, Ann-Christin Dippel, Soham Banerjee, Isabella Gallino, Ai-Han Feng, Gang Wang, Frank Mucklich, Ralf Busch, Jun Shen
Summary: This work systematically investigates the crystallization pathways and kinetics of Cu47.5Zr45.1Al7.4 bulk metallic glass (BMG), revealing the devitrification mechanisms during isothermal annealing or slow heating. The formation of an intermediate liquid phase prior to crystallization is found to be the structural origin of the rapid devitrification kinetics.
Article
Metallurgy & Metallurgical Engineering
Y. N. Zan, X. Lei, J. F. Zhang, D. Wang, Q. Z. Wang, B. L. Xiao, Z. Y. Ma
Summary: In this study, the high-temperature creep resistance of (B4C + Al2O3)/Al composite material was significantly improved by the addition of net-like distributed Al2O3. The composite material exhibited high apparent stress exponents and activation energy.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Li Zhou, Kuanyu Liu, Tiebing Yuan, Zhenyu Liu, Quanzhao Wang, Bolv Xiao, Zongyi Ma
Summary: A 3D representative volume element (RVE) model was developed to analyze the effective thermal expansion coefficient (CTE) of carbon nanotube reinforced aluminum (CNT/Al) composites. The orientation and configuration of CNTs were found to significantly influence the CTE of the composites, with parallel orientation and bundled configuration exhibiting the largest constraint effect and lowest CTE, respectively.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Z. W. Wang, M. Liu, H. Zhang, G. M. Xie, P. Xue, L. H. Wu, Z. Zhang, D. R. Ni, B. L. Xiao, Z. Y. Ma
Summary: This study compared the structure-property relationships of Q&P 1180 steel joints welded by laser welding, TIG welding, and friction stir welding. The results showed that laser welding and friction stir welding achieved excellent tensile strength comparable to the parent metal while maintaining material hardness, whereas TIG welding resulted in significant softening and strength loss.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Multidisciplinary
P. Y. Li, X. N. Li, Z. Y. Liu, L. Q. Chen, B. L. Xiao, Z. Y. Ma
Summary: The study found that laminate carbon nanotube (CNT)/Al-Cu-Mg composites showed significantly improved strength-ductility due to the mechanical incompatibility between ductile and brittle layers, which produced a large number of geometrically necessary dislocations (GNDs) inhibiting strain localization. Use of ultrafine grain Al as ductile layers further increased strength by 14% compared to coarse grain Al, showcasing better coordination with the brittle layers.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Metallurgy & Metallurgical Engineering
Z. Y. Dong, D. Wang, W. G. Wang, B. L. Xiao, Z. Y. Ma
Summary: Tungsten carbide (WC) nanocoatings on the surface of diamond particles were prepared using sol-gel and in-situ reaction methods to enhance interface bonding with aluminum. The thermal conductivity of the diamond/Al composite was improved by the nanocoatings, with different results depending on the concentration of the sol-gel used.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Metallurgy & Metallurgical Engineering
Zhenlin Wang, Beibei Wang, Zhen Zhang, Peng Xue, Yunfei Hao, Yanhua Zhao, Dingrui Ni, Guoqing Wang, Zongyi Ma
Summary: In this study, the effect of welding speeds on the fatigue properties of bobbin tool friction stir welding (BT-FSW) joints was analyzed using 2219-T87 Al alloy plates. The results showed that the high-cycle fatigue performance of the BT-FSW joints was significantly enhanced at higher welding speeds. Moreover, the location of failure in the joints varied depending on the welding speed.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Xinpeng Guo, Huijun Li, Peng Xue, Zengxi Pan, Rongzheng Xu, Dingrui Ni, Zongyi Ma
Summary: In recent years, progress has been made in the utilization of wire-arc additive manufacturing (WAAM) technology for the preparation of Al-Zn-Mg-Cu aluminum alloy. However, achieving ultra-high strength (600 MPa) in WAAM remains a challenge. In this study, a crack-free Al-Zn-Mg-Cu-Sc thin-wall component with ultra-high strength was successfully fabricated using the cold metal transfer (CMT) process. The tensile strength reached a recorded level of 618 MPa after heat treatment.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Composites
P. Y. Li, X. N. Li, K. Ma, F. C. Liu, Z. Y. Liu, L. Q. Chen, B. L. Xiao, Z. Y. Ma
Summary: A bioinspired tree-ring structure consisting of alternated ductile layers and brittle layers was designed and fabricated to improve the strength-ductility of CNT/Al composites. The results showed higher strength and elongation in the tree-ring composite compared to the uniform composite, indicating the potential for enhancing the mechanical properties of composites.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Composites
Z. Y. Dong, X. Y. Liu, D. Wang, W. G. Wang, B. L. Xiao, Z. Y. Ma
Summary: A 20 nm SiC nanocoating was prepared on crushed diamond particles using sol-gel and in situ reaction methods. The 50 vol% SiC-coated diamond particles reinforced 6061Al composites were fabricated by vacuum hot pressing. The composite showed improved interfacial thermal conductance due to the presence of SiC at the diamond-Al interface, resulting in a high thermal conductivity of 485 W/mK.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Xu Tang, Hao Zhang, Zhengwang Zhu, Peng Xue, Lihui Wu, Fengchao Liu, Dingrui Ni, Bolv Xiao, Zongyi Ma
Summary: By adjusting the process parameters of laser powder bed fusion (LPBF), near fully dense AlCoCrFeNi2.1 samples were obtained, and laser remelting was selected as an optimized scanning strategy to further improve the forming quality. The microstructure of the samples exhibited regular eutectic lamellae consisting of nano-scale face-centered-cubic (FCC) and B2 phases, resulting in improved strength and performance compared to traditional methods.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
