Article
Nanoscience & Nanotechnology
Sang-Hwa Lee, Jae-Gil Jung, Sung-Il Baik, David N. Seidman, Min-Seok Kim, Young-Kook Lee, Kwangjun Euh
Summary: The research revealed that the formation and evolution of GPI and GPII zones during natural aging had a significant impact on the mechanical properties of the Al-7.6Zn-2.7Mg-2.0Cu-0.1Zr-0.07Ti alloy. The Zn/Mg atomic ratio, mean radius, number density, and volume fraction of the GP zones also played crucial roles in influencing the mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Li Liu, Bo Zhang, Jian-tang Jiang, Wen-zhu Shao, Liang Zhen
Summary: The formation and evolution of twin-induced adiabatic shear bands (ASBs) in a Mg-Al-Mn alloy under ballistic impact were studied. Localized shear deformation occurred at the twin boundaries, resulting in the formation of ASBs. The ASBs thicken with increasing plastic deformation, mainly composed of subgrains, ultra-fine recrystallized grains, and Mg17Al12 precipitates. The appearance of the twin-induced ASBs is mainly attributed to the twin-twin intersections caused by high strain rate deformation.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
E. Thronsen, S. Shah, C. Hatzoglou, C. D. Marioara, S. Wenner, S. J. Andersen, B. Holmedal, R. Holmestad
Summary: The evolution of early-stage precipitates in a 7003 aluminium alloy was investigated through artificial ageing. It was found that after 10 minutes of artificial ageing, the hardness of the precipitates decreased and their size increased, indicating the dissolution of the Guinier-Preston (GP) zones. Subsequently, as the ageing time increased, the hardness gradually increased and new precipitate phases appeared. Atomically resolved scanning transmission electron microscopy images of the disputed T' phase were also presented.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Hongyu Xiao, Zhiping Wang, Jiwei Geng, Chengcheng Zhang, Yugang Li, Qing Yang, Mingliang Wang, Dong Chen, Zhuguo Li, Haowei Wang
Summary: This study investigated the precipitation and crystallographic relationships between the quench-induced S phase and Al matrix in an Al-Zn-Mg-Cu alloy using scanning transmission electron microscopy and scanning precession electron diffraction. It was found that higher lattice strain energy led to Zn segregation at the S-Al interfaces and the heterogeneous nucleation of nanosized eta' precipitates. The crystallographic orientation relationships between the S phases and precipitates were reported and discussed for the first time in an Al-Zn-Mg-Cu alloy.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Dongtao Wang, Shichao Liu, Xiaozu Zhang, Xinzhong Li, Haitao Zhang, Hiromi Nagaumi
Summary: The study found that low-temperature short-time artificial aging can significantly improve the mechanical properties of HPDC Al-Si-Cu-Mg-Zn alloy, and the as-cast microstructure of HPDC Al-Si-Cu-Mg-Mn-Zn alloy can be significantly refined. With the increase of aging temperature, better strengthening effect can be achieved.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Yunhe Zheng, Laure Bourgeois, Jian-Feng Nie
Summary: This study investigated the structure of precipitates in Mg-Zn-Al alloys, revealing new structural features and proposing that the rod-shaped precipitates can be described by tiling of different shapes.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Wei Xue, Yixuan Wang, Jiuyang Xia, Zequn Zhang, Kang Huang, Shuai Lu, Sherif Zein El Abedin, Xiaogang Li, Bowei Zhang, Junsheng Wu
Summary: Based on experimental and calculation results, it was found that Mg (Zn, Al, Cu)2 precipitates have a higher Volta potential than the matrix, contrary to traditional beliefs. Furthermore, the dissolution of Mg (Zn, Al, Cu)2 particles facilitates the formation of nano pits on the surface in aggressive media. Additionally, localized corrosion induced by Al7Cu2Fe particles occurs earlier due to a greater Volta potential difference.
Article
Materials Science, Multidisciplinary
Muhammad Abubaker Khan, Yangwei Wang, Muhammad Hamza, Ghulam Yasin, Mohammad Tabish, Chuangshi Feng, Waheed Qamar Khan, Tahir Ahmad, Wei-Bing Liao, Mohamed A. Afifi
Summary: High strain rate compression results in the growth and overlap of precipitates in the Al alloy, affecting its properties. With increasing strain rates, coarse precipitates are no longer effective in hindering dislocation motion, leading to a decrease in yield strength.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Abubaker Khan, Chenhao Xu, Muhammad Hamza, Mohamed A. Afifi, Naeem Akhtar Qaisrani, Huibin Sun, Bin Wang, Waheed Qamar Khan, Ghulam Yasin, Wei -Bing Liao
Summary: An investigation was conducted to study the influence of peak-ageing and double ageing treatments on the precipitation along different grain boundary orientations of an extruded Al-Zn-Mg-Cu alloy. The results showed that the type of grain boundary precipitates varied depending on the grain boundary orientation and treatment. The study provides new insights into engineering the grain boundary precipitates to achieve desired precipitate types and corresponding mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
G. Y. Zheng, X. Luo, B. Huang, P. T. Li, Y. Q. Yang
Summary: In this study, a gradient nanostructured surface layer was fabricated in an aged Al-Zn-Mg-Cu alloy using ultrasonic surface rolling processing (USRP), resulting in a 40% increase in microhardness. The increase in hardness is due to the enhancement from grain refinement outweighing the reduction in precipitates within the gradient lamellae structure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Shiyi Wu, Jingxu Zheng, Xuesong Xu, Bin Chen
Summary: The evolution and nucleation mechanism of precipitates in Al-Zn-Mg-Cu alloy during the initial aging stage were investigated using high resolution electron microscopy and first-principles calculations. A new nucleation mode was discovered, which showed enhanced stability and interface interaction. These findings are significant for understanding the aging strengthening effect of Al alloys.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Katarzyna Stan-Glowinska, Amelia Zieba, Lukasz Rogal
Summary: This study investigates the microstructures and mechanical properties of two conventionally cast Al-Mg-Zn base alloys during aging process. The results show that the Ga-bearing alloy exhibits higher hardness and tensile strength, which can be attributed to its higher precipitate number density. In addition, the structure of formed precipitates differs between the two alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Civil
Muhammad Abubaker Khan, Yangwei Wang, Mohamed A. Afifi, Mohammad Tabish, Muhammad Hamza, Ghulam Yasin, Tahir Ahmad, Wei-Bing Liao
Summary: This study focuses on the newly developed (Al, Zn)(3)Zr precipitates through double aging treatment in an Al-Zn-MgCu alloy and their response to dynamic compression. The results show that the strength of the alloy is increased with an increasing strain rate, and the microstructures change after the dynamic compression.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Kaiyun Xiang, Lipeng Ding, Zhihong Jia, Xiaofang Yang, Qing Liu, Zhang Hao
Summary: The phase transition of the eta-MgZn2 Laves phase from C14 to C15 structure in peak aged Al-Zn-Mg-Cu alloy was studied using atomic resolution high-angle annular dark-field scanning transmission electron microscopy (HAADFSTEM) and density functional theory (DFT) calculations. The formation of a well-ordered C15 structural MgZn2 as an independent precipitate was observed for the first time in the alloy. The C15 structure was found to be transformed from the C14 structure through synchroshear activation and was associated with the formation of twin-like structures and five-fold symmetry twins.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Bao Chen, Chuan-Hui Zhang, Ying Jin
Summary: This study investigates the structures and fracture properties of η'/Al bulk and surface models under stress and H environment using first-principles calculations. Stress-strain curves are obtained to understand the effect of stress and H on the structural properties, while the role of stress on η'/Al combined bulk and surface is analyzed through the difference charge density. Additionally, the adsorption and penetration of H into the phase boundary from the surface are discussed in detail, aiming to contribute to the understanding of stress corrosion in Al-Zn-Mg-Cu alloy.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Civil
Muhammad Abubaker Khan, Yangwei Wang, Mohamed A. Afifi, Mohammad Tabish, Muhammad Hamza, Ghulam Yasin, Tahir Ahmad, Wei-Bing Liao
Summary: This study focuses on the newly developed (Al, Zn)(3)Zr precipitates through double aging treatment in an Al-Zn-MgCu alloy and their response to dynamic compression. The results show that the strength of the alloy is increased with an increasing strain rate, and the microstructures change after the dynamic compression.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Abba Bala Musa, Mohammad Tabish, Anuj Kumar, Manickam Selvaraj, Muhammad Abubaker Khan, Badria M. Al-Shehri, Muhammad Arif, Muhammad Asim Mushtaq, Shumaila Ibraheem, Yassine Slimani, Saira Ajmal, Tuan Anh Nguyen, Ghulam Yasin
Summary: Developing cost-effective and high-performance non-precious electrocatalysts for ORR is crucial for clean energy generation. Single-atom catalysts have shown significantly improved performance, but protecting their structure from deterioration is still a challenge. In this study, a simple strategy for protecting the structure of single-atom catalysts by implanting/decorating FeN4 on Fe-ZIF-derived carbon nanotubes is reported. The developed catalyst exhibits outstanding ORR activity in both acidic and alkaline media compared to commercial Pt/C.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Saira Ajmal, Anuj Kumar, Ghulam Yasin, Mohammed Mujahid Alam, Manickam Selvaraj, Mohammad Tabish, Muhammad Asim Mushtaq, Ram K. Gupta, Wei Zhao
Summary: In this study, Fe3O4 nanoparticles were loaded onto multiwall carbon nanotubes using a single-step microwave-assisted strategy to form Fe3O4@CNTs composite. The composite exhibited improved oxygen reduction reaction activity, superior cycling stability, and remarkable methanol tolerance, making it a promising catalyst for practical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Wei-Bing Liao, Chen-Hao Xu, Tian-Li Wang, Chuang-Shi Feng, Muhammad Abubaker Khan, Ghulam Yasin
Summary: Nano-structured refractory high-entropy alloy films were prepared and their oxidation behavior and effects on microstructure and mechanical properties were investigated. The films exhibited stable structure and mechanical properties under oxidation conditions up to 400 degrees Celsius.
Article
Materials Science, Multidisciplinary
Muhammad Abubaker Khan, Chenhao Xu, Muhammad Hamza, Mohamed A. Afifi, Naeem Akhtar Qaisrani, Huibin Sun, Bin Wang, Waheed Qamar Khan, Ghulam Yasin, Wei -Bing Liao
Summary: An investigation was conducted to study the influence of peak-ageing and double ageing treatments on the precipitation along different grain boundary orientations of an extruded Al-Zn-Mg-Cu alloy. The results showed that the type of grain boundary precipitates varied depending on the grain boundary orientation and treatment. The study provides new insights into engineering the grain boundary precipitates to achieve desired precipitate types and corresponding mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Shengling Zhang, Fei Zhao, Ghulam Yasin, YunYun Dong, Jinsheng Zhao, Yue Guo, Panagiotis Tsiakaras, Jie Zhao
Summary: Two novel conjugated porous polymers (CPPs) with pyrene and 1,3,5-triazine building blocks were synthesized. Structural changes in the peripheral groups of the triazine units greatly affected the photocatalytic activity of the polymers. The catalyst containing thiophene-triazine (ThPy-CPP) showed a much higher photocatalytic hydrogen evolution rate than the one containing phenyl-triazine (PhPy-CPP), indicating a promising direction for designing efficient CPP-based photocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Muhammad Asim Mushtaq, Muhammad Arif, Ghulam Yasin, Mohammad Tabish, Anuj Kumar, Shumaila Ibraheem, Wen Ye, Saira Ajmal, Jie Zhao, Pengyan Li, Jianfang Liu, Ali Saad, Xiaoyu Fang, Xingke Cai, Shengfu Ji, Dongpeng Yan
Summary: Ammonia (NH3) is essential for fertilizer production and serves as a sustainable energy carrier and zero-carbon fuel. However, the current production process is unsustainable and energy-intensive. Electrochemical nitrogen reduction reactions (NRR) are promising alternatives, but still face challenges such as low Faraday efficiency and NH3 yields. This review summarizes the progress and strategies of various NRR electrocatalysts, and emphasizes the need for collaboration between theoretical and experimental studies, advanced characterization techniques, and understanding of the electrocatalytic mechanism for further development.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Chemistry, Physical
Sumaira Nazar Hussain, Hajera Gul, Nadeem Raza, Fethi Albouchi, Munir Ahmad, Zeinhom M. El-Bahy, Maham Hussain, Waseem Raza, Ghulam Yasin
Summary: This article develops a facile synthesis process, based on self-templating CoSe2 nanorods on carbon cloth (CoSe2/CC), which serves as an efficient electrocatalyst for the hydrogen evolution reaction (HER) in both alkaline and acidic electrolytes. Compared to bare CoSe2, the CoSe2/CC catalyst exhibits significantly improved HER performance and kinetics. This research could lead to the rational design and fabrication of other transition-metal selenide nanostructured materials for efficient HER electrocatalysis.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Ajmal Khan, Zhidong Chang, Wenjun Li, Xiaohui Ma, Mei Dong, Liang Geng, Ghulam Yasin, Shuaib Khan, Hira Anwar
Summary: Due to its functional structure and tunable shape, 2D zeolitic imidazole framework (ZIFs) have gained significant interest in various fields. In this study, thin ZIF-8 sheets were prepared using a mixed solvent and then delaminated into single layers through physical sonication. These hexagonal sheets exhibited high stability and controlled morphology, and showed excellent performance in dye degradation compared to 3D ZIF-8 crystals.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Chuang Qiu, Anuj Kumar, Daping Qiu, Mohammad Tabish, Jiapeng Zhang, Zhijie Jiang, Ang Li, Ghulam Yasin, Xiaohong Chen, Huaihe Song
Summary: Sulfur doping in carbon materials is generally considered to enhance initial coulombic efficiency, potassium storage capacity, and reaction kinetics. This study presents the successful preparation of thiophene-sulfur-doped nitrogen-rich porous carbons with different sulfur contents. The results show that thiophene-sulfur doping significantly increases the initial coulombic efficiency and improves the performance of the carbon materials in terms of specific capacity, rate performance, and cycling stability.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ali Saad, Olfa Bechambi, Sajjad Ali, Muhammad Asim Mushtaq, Ghulam Yasin
Summary: Metallic surface constituents and partial oxidation significantly influence the structure, morphology, performance, and durability of an electrocatalyst. In this study, a three-dimensional mesoporous electrocatalyst Ni3FeN was designed and optimized through nano-casting and thermal-nitridation processes. The Ni3FeN-420 sample showed good catalytic activity with low overpotential towards oxygen evolution reaction (OER) and excellent durability. Furthermore, the Ni3FeN-420/Pt/C mixture exhibited higher and more stable performance in Zn-air battery compared to benchmark catalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Abdullah Flehan, Liu Jinna, Mohammad Tabish, Anuj Kumar, Yusof A. Y. A. Mohammed, Muhammad Mubeen, Mohamed M. Makhlouf, Ghulam Yasin
Summary: This study successfully improved the adhesion and corrosion resistance of the Ce-La film by using poly-dopamine (PDA) as a post-treatment layer. The results showed that PDA healed the cracks and increased the surface roughness and thickness of the conversion coating. Moreover, the PDA-treated Ce-La film became more hydrophobic, leading to enhanced corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Anuj Kumar, Ram K. Gupta, Mohd Ubaidullah, Abdullah M. Al-Enizi, Bidhan Pandit, Senthilkumar Nangan, V. Jagadeesha Angadi, Ghulam Yasin
Summary: This article reports a hollow mesoporous Fe-graphitic carbon nitride supported on carbon nanotubes (Fe-C3N3@CNTs) as a superior electrocatalyst for the oxygen reduction reaction (ORR) in fuel cells. The Fe-C3N3@CNTs composite showed dominant 4e-ORR pathway, exceptional methanol tolerance, and durability. Theoretical analysis revealed that Fe-C3N3 catalytic moieties facilitated the adsorption and desorption of oxygen, enabling efficient ORR.
