Article
Materials Science, Multidisciplinary
Biaobiao Yang, Jun Wang, Yunping Li, Matthew Barnett, Javier LLorca
Summary: A dual-textured Mg-6.5 Zn alloy with limited yield asymmetry is studied. The deformation mechanisms responsible for the behavior are analyzed and it is found that compressive deformation is accommodated by basal slip and extension twinning, while tensile deformation promotes basal and nonbasal slip. The contribution of rotated grains leads to similar values of the yield strength in tension and compression.
Article
Materials Science, Multidisciplinary
Zhiquan Huang, Chuanlu Qi, Yanchun Zhu, Guowei Yang, Hongyu Lai, Jinchao Zou
Summary: The microtexture evolution of AZ31 magnesium alloy plate edge samples was studied using EBSD, revealing that the generation of extension twins is influenced by varying deformation conditions. At room temperature, the edge samples exhibited significantly greater texture strength than the middle part, with the consumption of hard-oriented grains and weakening effect of the basal texture being proportional to the volume fraction of extension twins.
METALS AND MATERIALS INTERNATIONAL
(2021)
Review
Materials Science, Multidisciplinary
Mahesh Panchal, K. R. Ravi, Lalit Kaushik, Rajesh Khatirkar, Shi-Hoon Choi, Jaiveer Singh
Summary: Magnesium alloys have gained great interest as the lightest structural metallic materials with high specific strength and stiffness. However, their poor formability at room temperature is a limitation for their structural applications. Various techniques, including microalloying, severe plastic deformation, thermomechanical processing, and pre-twinning/stretching, have been proposed to alter the crystallographic texture in magnesium alloys.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Jing Xu, Yanshuo Peng, Bo Guan, Yunchang Xin, Adrien Chapuis, Guangjie Huang, Qing Liu
Summary: Dual-phase Mg-Li alloys with different rolling paths were studied to investigate the effect of rolling path on microstructure, texture and mechanical anisotropy. The lamellar alpha+beta structures remained after ED-rolling and subsequent annealing, while disappeared after TD-rolling. The texture of beta phase was hardly affected by the rolling path. Annealing only reduced the maximum intensity of texture without changing the type of texture. VPSC simulations revealed that the activated deformation modes and alpha/beta phase boundaries played important roles in texture evolution. There was an obvious mechanical anisotropy after ED-rolling, which disappeared after TD-rolling.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
B. Q. Shi, Y. Z. Wang, X. L. Shang, L. Y. Zhao, C. Q. Li, D. C. Chen, B. H. Nie, R. S. Chen, W. Ke
Summary: This study investigates the microstructure evolution and texture development of a RE-containing Mg alloy during hot rolling, aiming to understand the formation of shear bands and their correlation with macro-texture characteristics. The results reveal the roles of different types of twins/variants and dislocation mechanisms in shear band formation, and provide insights into the influence of these factors on the texture development.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Shengzhan Wang, Xiaopei Li, Song-Zhu Kure-Chu, Biwei Deng, Xiaohui Li, Xiufeng Xiao
Summary: Mg-rare earth (RE) alloy, Mg-1Gd (G1), was deformed by electroplastic-asymmetric rolling (EASR) and symmetric electroplastic rolling (ER). Microstructure and texture evolutions of the rolled alloys were characterized using EBSD, XRD, and TEM observations. Tensile tests were conducted to evaluate the mechanical properties of the rolled samples. The results showed that EASR processed sample exhibited superior rollability and tensile properties compared to the ER processed sample, which can be attributed to the abnormal activity of {1012} twinning and concomitant texture evolution during EASR. The study demonstrated the feasibility of activating {1012} twinning of Mg alloys directly through the rolling process, offering a novel approach to address the poor rollability of Mg alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Mozhgan Shokri, Abbas Zarei-Hanzaki, Hamid Reza Abedi, Jae Hyung Cho
Summary: The study investigated the correlation between microstructure/texture evolutions and high temperature flow behavior in Mg alloy containing long period stacking order (LPSO) phases. The annealing treatment effectively strengthened the alloy and decreased ductility, with blocky LPSO assisting dynamic recrystallization and lamellar LPSO increasing alloy strength. The findings suggest that microstructure and texture evolution play a significant role in the high-temperature behavior of the Mg alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Wenzhen Chen, Wenjie Wu, Wenke Wang, Wencong Zhang, Xinhua Liu, Hyoung Seop Kim
Summary: Texture adjusting approaches were proposed to improve tension-compression asymmetry in magnesium alloys. The dominant deformation mechanism during yielding was quantified based on Sachs assumption and primarily manifested as twinning inhibition and transition between twinning and slip. The impacts on yield strength and asymmetry were estimated by modified Hall-Petch relationship. Slight texture adjustments, particularly of basal texture divergence, can significantly improve strength asymmetry while avoiding severe strength loss, illustrating the importance and potential of texture adjustment in engineering.
MATERIALS RESEARCH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Lichao Li, Chunjoong Kim, Young-Min Kim
Summary: Four types of slip systems and two types of twinning were identified in magnesium alloys using SEM and EBSD. The Schmid factors of these slip systems were calculated based on the Euler angle obtained from EBSD. The identification of slip systems and calculation of Schmid factors are crucial for understanding the deformation mechanism of the material.
Article
Nanoscience & Nanotechnology
Xiaopeng Liang, Liang Kang, Huizhong Li, Ruixin Wang, Qingbo Wu, Bin Liu, Li Wang
Summary: This study investigated the mechanical properties and texture of powder metallurgy FeCoCrNiN0.07 HEA sheets under cold-rolled and different annealed conditions. It was found that the mechanical anisotropy was significantly reduced in the sheet after annealing at 750 degrees C. The main texture components and the equivalent Schmid factors were analyzed to explain the mechanical property anisotropy of the FeCoCrNiN0.07 sheet.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Yu Zhang, Xiao Li, Renlong Xin, Shewei Xin, Qing Liu
Summary: This study aimed to understand the cross-boundary behavior of {332}(113) twinning in a metastable Ti-15Mo alloy and found that non-Schmid twins might be promoted by the cross-boundary behavior. It was also discovered that CSF is more effective than SF for twin variant prediction in Ti-15Mo alloy. Furthermore, the influence of boundary angle on twinning transfer behavior was revealed based on CSF analysis.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Qiang Yang, Shuhui Lv, Zixiang Yan, Xiru Hua, Xin Qiu, Jian Meng
Summary: This study reveals strong ductility asymmetry in extruded Mg alloys containing LPSO plates, which is mainly caused by deformation steps in LPSO plates, contributing significantly to compressive ductility. The results provide fundamental insights into deformation modes and mechanisms of thin LPSO plates, as well as a better understanding of the ductility asymmetry in extruded Mg alloys containing LPSO plates.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Jilong Geng, Zhifeng Yan, Hongxia Zhang, Yongquan Liu, Peng Dong, Shuo Yuan, Wenxian Wang
Summary: Ultrasonic surface rolling process (USRP) can generate gradient nanostructured surface and high compressive residual stresses on magnesium alloy, improving strength through twins and texture evolution.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Engineering, Industrial
X. M. Chen, W. Z. Chen, L. X. Zhang, H. X. Wang, W. K. Wang, W. C. Zhang
Summary: Three combined extrusion techniques were used to fabricate three typical {0002} basal textures in fine-grained ZK61 magnesium alloy, and their influence on tension-compression asymmetry was evaluated. The study showed that basal texture dispersion decreased tension-compression asymmetry and achieved high-strength symmetrical ZK61 magnesium alloy successfully.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Jong Un Lee, Gyo Myeong Lee, Sung Hyuk Park
Summary: Precompression and subsequent annealing treatment can improve the bending formability of the Mg-9Al-1Zn-0.3Mn-0.9Ca-0.6Y alloy. The PCAed material exhibits higher bending formability due to the promoted twinning and slip behaviors.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Sang-Hoon Kim, Jeong Hun Lee, Chong Soo Lee, Jonghun Yoon, Sung Hyuk Park
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2019)
Article
Chemistry, Physical
Taekyung Lee, Byung Je Kwak, Taein Kong, Jeong Hun Lee, Sang Won Lee, Sung Hyuk Park
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Multidisciplinary
Su Jin Lee, Ye Jin Kim, Jeong Hun Lee, Sung Hyuk Park
KOREAN JOURNAL OF METALS AND MATERIALS
(2019)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Jeong Hun Lee, Jae Suk Jeong, Seong-Woo Choi, Dong Jun Lee, Jae Keun Hong, Yong-Taek Hyun
SCRIPTA MATERIALIA
(2020)
Article
Metallurgy & Metallurgical Engineering
Taein Kong, Byung Je Kwak, Jonghyun Kim, Jeong Hun Lee, Sung Hyuk Park, Ji Hoon Kim, Young Hoon Moon, Hyun Sik Yoon, Taekyung Lee
JOURNAL OF MAGNESIUM AND ALLOYS
(2020)
Article
Metallurgy & Metallurgical Engineering
Jong Un Lee, Ye Jin Kim, Sang-Hoon Kim, Jeong Hun Lee, Min-Seong Kim, Shi-Hoon Choi, Byoung Gi Moon, Young Min Kim, Sung Hyuk Park
JOURNAL OF MAGNESIUM AND ALLOYS
(2019)
Article
Chemistry, Physical
Jongbin Go, Jeong Hun Lee, Hui Yu, Sung Hyuk Park
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Materials Science, Multidisciplinary
Taekyung Lee, Byung Je Kwak, Jinyeong Yu, Jeong Hun Lee, Yoojeong Noh, Young Hoon Moon
Article
Nanoscience & Nanotechnology
Byung Je Kwak, Sung Hyuk Park, Young Hoon Moon, Jeong Hun Lee, Taekyung Lee
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Hyun Ji Kim, Sang-Hoon Kim, Sang Won Lee, Byoung Gi Moon, Young Min Kim, Jeong Hun Lee, Jonghun Yoon, Hui Yu, Sung Hyuk Park
Summary: The addition of trace amounts of mischmetal to Mg-Al-Zn-Ca-Y alloys can significantly refine the grain structure and improve stability during extrusion, although edge cracks may still form under high-speed extrusion conditions.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Jinyeong Yu, Hongxin Liao, Jeong Hun Lee, Young Hoon Moon, Hyun Sik Yoon, Jonghyun Kim, Taekyung Lee
Article
Materials Science, Multidisciplinary
Yu Jin Park, Eok Soo Kim, Jeong Hun Lee, Ji Hwan Choi, Pil Hwan Yoon, Ho Jeong Kang, Dong Hyun Kim, Yong Ho Park, Jong Wan Ko
Summary: This study designed and built a gravity die casting mold with a conformal cooling channel (CC) using additive manufacturing (AM) technology to enhance cooling performance. Casting simulation and die casting experiments demonstrated that the CC improved cooling performance by approximately 8% to 10% compared to conventional cooling channels, and reduced the secondary dendrite arm spacing (SDAS) of the alloy. The functionally superior CC molds produced through AM technology offer improved cooling performance.
KOREAN JOURNAL OF METALS AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jeong Hun Lee, Ye Jin Kim, Sung Hyuk Park
Summary: This study demonstrates that the low-cycle fatigue characteristics of a rolled Mg alloy with {10-12} twins vary significantly depending on the loading direction on the rolling plane. The contribution of the initial {10-12} twins to strain accommodation during cyclic deformation in different loading directions is influenced by the angle difference between the twinned region and the applied loading direction. As a result, the fatigue life of the pre-twinned alloy varies with the loading direction, with RD > 45RD > TD.
Article
Engineering, Multidisciplinary
Yeon Beom Jeong, Takeshi Wada, Soo-Hyun Joo, Jeong-Min Park, Jongun Moon, Hyoung Seop Kim, Ilya Vladimirovich Okulov, Sung Hyuk Park, Jeong Hun Lee, Ki Buem Kim, Hidemi Kato
Summary: The breakthrough in the strength and ductility trade-off is achieved through a novel heterostructured composite composed of immiscible magnesium and ferrochrome, resulting in outstanding mechanical properties beyond expectations. The unique interpenetrating-phase configuration, formed through liquid metal dealloying, leads to a significant alternation of the intrinsic mechanical properties of the soft and hard zones, providing a guideline for the design of advanced materials.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seong-Woo Choi, Jae-Keun Hong, Byeong-Chan Suh, Jeong Hun Lee, Byung Je Kwak
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
