Article
Materials Science, Multidisciplinary
Bo Li, Shangshang Liang, Shengping Wen, Zhihao Zhao, Xiaolan Wu, Wei Wang, Kunyuan Gao, Hui Huang, Zuoren Nie
Summary: This paper investigates the competition between precipitation and segregation of Sc in Al-CuMg-Ag alloys and its effects on thermal stability. It is found that Sc plays a crucial role in improving the thermal stability of the alloys by inhibiting the growth of certain phases.
Article
Materials Science, Multidisciplinary
Joao Gabriel da Cruz Passos, Bruno Xavier de Freitas, Rodrigo da Silva, Carlos Alberto Della Rovere, Rodrigo Magnabosco, Marcelo Falcao de Oliveira, Artur Mariano de Sousa Malafaia
Summary: This study investigates the formation of ferritic layer and its effect on high-temperature oxidation resistance in Mn-rich austenitic alloys. The relationship between mass variation and ferrite thickness was established, and the depletion of Mn and Cr was observed due to the formation of Mn2O3/MnCr2O4. Thermodynamic phase diagrams showed the stability of ferrite at high temperatures affecting oxidation resistance. DICTRA analyses were used to study the changes in Mn concentration profile during oxidation to explain the growth of the ferritic layer.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
X. J. Jiang, S. J. . Bao, L. W. Zhang, X. . Y. Zhang, L. S. Jiao
Summary: In recent years, there has been increasing attention on the research and development of high strength Zirconium-Titanium (ZrTi) based alloy system. However, the increase in strength of ZrTi alloy leads to a significant decrease in plasticity, similar to other metallic materials. This study demonstrates the preparation of a high strength and toughness ZrTi alloy with gradient structure using laser surface remelting. The results show improved tensile strength of 1550 MPa and a tensile elongation above 10%, alongside the formation of a gradient structure from the surface to the matrix, which is attributed to the composite deformation mechanisms of dislocation slip, twinning, and stress-induced martensitic transformation.
Article
Materials Science, Multidisciplinary
X. J. Jiang, J. Bai, N. Yang, Q. X. Ran, S. Q. Wang
Summary: The preparation process of titanium alloys typically involves hot deformation and post heat treatment, with the formulation of the heat treatment process being based on the key factor of alpha-beta phase transformation temperature. Current study results indicate that the transformation temperature of alpha-beta phase changes significantly after hot deformation. The energy increase and phase stability decrease of the alpha and beta phase due to defects formed during hot deformation are the key reasons behind this phenomenon. Analysis by DSC and re-determination of phase transformation temperature according to different deformation processes are crucial for the heat treatment of titanium alloys.
Article
Chemistry, Physical
Qing Cai, Changming Fang, Chamini Mendis, Isaac T. H. Chang, Brian Cantor
Summary: Eutectic alloys were fabricated from the quaternary Al-Cu-Si-Ni system, and a ternary eutectic reaction was found. The as-solidified microstructure exhibited a lamellar theta-Al2(CuNi) phase and fibrous Si morphology. The thermal stability of the eutectic alloy was investigated, and the Ni solution in theta-Al2(CuNi) phase contributed to its thermal stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Soban Muddassir Dar, Hengcheng Liao, Aiqun Xu
Summary: This study found that Fe plays a key role in stabilizing the I-phase in conventionally cast Al-Cu-Mn alloys, but does not participate in its transformation to the D-phase and T-Al20Cu2Mn3 phase.
Article
Materials Science, Multidisciplinary
Haofei Sun, Meifeng Li, Hao Zhang, Jing Liu
Summary: The oxidation behavior of FeCrNi medium entropy alloy was investigated through experimental observations and density functional theory (DFT) calculations. The study found that at 900 degrees C, the alloy forms a desirable and continuous oxide layer, while at 1000 degrees C, the oxide layer becomes discontinuous with penetration of oxide. These observations highlight the significant role of phase structure in promoting the formation of protective oxide scales and influencing oxidation resistance.
Article
Materials Science, Multidisciplinary
Gang Wang, Zhengwei Gu, Ge Yu, Xin Li
Summary: The hot stamping technology of high-strength aluminum alloy sheet has gained attention due to the increasing demand for lightweight automobiles. This study systematically investigates the precipitates evolution during the solution process of the AA7075-H18 alloy sheet. The insoluble particles and soluble particles were identified, and a reasonable solution temperature window was established.
Article
Materials Science, Multidisciplinary
Shuaiqi Wang, Xianzhe Ran, Bei He
Summary: This study used LPBF to fabricate Ti-5Al-2Sn-2Zr-4Mo-4Cr (Ti17) alloy and investigated the microstructural characteristics and mechanism of α phase formation. The as-deposited sample showed a microstructure with a high volume fraction of ultrafine nanoscale α phases dispersed throughout after stress relief annealing. Abundant edge dislocations and dislocation loops were observed in the α phase, while dislocations were scarce in the β phase. The formation of ultrafine nanoscale α phases occurs during the subsequent low-temperature stress relief annealing process following additive manufacturing. After stress relieving, the Ti17 sample exhibited a superhigh tensile strength of nearly 1500 MPa.
Article
Materials Science, Multidisciplinary
Xiao Yang, Zhanyong Zhao, Peikang Bai, Wenbo Du, Shaowei Wang
Summary: The Ti48Al2Cr2Nb sample was prepared using Selective laser melting (SLM), and the microstructure evolution was studied with the effect of hot isostatic pressing. The results showed that hot isostatic pressing led to significant refinement of grains in the sample, with the γ phase exhibiting a pinning effect and hindering grain growth while accumulating dislocations that hindered grain boundary growth. The proportion of low-angle grain boundaries decreased in the sample after hot isostatic pressing, as some low-angle grain boundaries absorbed dislocations during the process and underwent dynamic recrystallization to transform into high-angle grain boundaries.
Article
Materials Science, Multidisciplinary
Y. Y. Liu, W. C. Zhu, W. K. Deng, P. Song, X. M. Liu, J. H. Zhang, D. F. Guo
Summary: The TiZrAlV alloy was subjected to electroplastic rolling deformation, resulting in phase transformations from beta phase to alpha phase and alpha phase to alpha '' phase. The content of various phases was tailored by the rolling strain, leading to an increase in ultimate tensile strength and failure elongation.
Article
Chemistry, Physical
N. Liu, M. Xu, Y. Y. Qian, P. J. Zhou
Summary: In this study, Cr was partially substituted by Ti to investigate the effect on the microstructure, phase stability, and properties of (FeCoNi)(60)Al15Cr25-xTix alloys, while also examining the oxidation resistance. The designed H6T alloys showed excellent oxidation resistance, indicating potential as high-temperature materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xulong An, Xiaotong Zhang, Yudong Sui, Jing Hu, Zhengxiang Xu, Wei Wei, Chenglin Chu, Wenwen Sun
Summary: Eutectic multi-principal element alloy with copper content, Cu42.3Ni30Si15Al12.7, was designed and investigated in this study. The microstructure of the alloy consists of primary phase Ni2Si and eutectic phase (FCC(Cu) + BCC(NiAl)). The eutectic reaction temperature is 1004 degrees C. The as-cast Cu42.3Ni30Si15Al12.7 alloy exhibits high micro-hardness (400 +/- 2.4 HV) and compressive fracture strength (1511 MPa).
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Dalibor Preisler, Michaela Janovska, Hanus Seiner, Lucie Bodnarova, Jitka Nejezchlebova, Martin Koller, Petr Sedlak, Petr Harcuba, Jozef Vesely, Jiri Kozlik, Tomas Chraska, Josef Strasky, Milos Janecek
Summary: Compositionally graded samples of Ti-xNb-7Zr-yO alloys with various chemical compositions were prepared and studied for potential biomedical use. The elastic constants of each sample were determined, showing a dependence on the volume fraction of niobium and oxygen. The lowest elastic modulus was observed near the stability limit between β matrix and α'' martensitic phase, while the presence of isothermal ω particles led to the highest elastic constants.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Mengyao Su, Xiaoying Hou, Jiangbin Zhang, Dewei Zhao, Congmian Zhen, Li Ma, Denglu Hou
Summary: In this study, the cyclic reversibility of the martensitic transformation and magnetocaloric effect in a Ni51.0Mn20.8Ga22.4Cu5.8 alloy was investigated. The martensitic transformation showed small hystereses and excellent reversibility upon 50 thermal and magnetic cycles due to the good geometric compatibility of the martensite/austenite transferring interface. A reversible magnetic entropy change of -21.7 J/kgK was achieved under 50 kOe after performing 50 magnetic cycles, indicating the excellent reversibility of the magnetocaloric effect in the alloy.
Article
Materials Science, Ceramics
Yao Liu, Beizhi Li, Chongjun Wu, Lingfei Kong, Yihao Zheng
CERAMICS INTERNATIONAL
(2018)
Article
Engineering, Manufacturing
Jingzhu Pang, Chongjun Wu, Yiming Shen, Siqi Liu, Qingxia Wang, Beizhi Li
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2019)
Article
Crystallography
Chongjun Wu, Weichun Xu, Shanshan Wan, Chao Luo, Zhijian Lin, Xiaohui Jiang
Summary: Heat treatment can improve performance and quality control in additive manufacturing, and the inverse analysis method can determine the heat transfer coefficient and enhance the accuracy of heat treatment simulation.
Article
Crystallography
Tangyong Zhang, Fei Liu, Yao Liu, Chongjun Wu, Steven Y. Liang
Summary: This paper uses ultraviolet nanosecond laser to remove the 2.5D C-f/SiC composite and investigates the effects of laser processing parameters on groove morphology and surface thermally affected zone. A regression model is established to predict the groove size, and the study reveals the impact of carbon fiber arrangement direction on laser processing.
Article
Engineering, Manufacturing
Qingxia Wang, Jiazhou Wen, Chongjun Wu, Chao Luo, Zhijian Lin, Steven Y. Liang
Summary: This paper conducted a single diamond grit scratching experiment on unidirectional C-f/SiC composite to investigate the material's mechanical response. The scratching force and acoustic emission signals were measured to reveal the removal characteristics. Based on fracture size and fiber fracture morphology, the scratching removal behavior of SiC matrix and carbon fibers in the composite was analyzed.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE
(2023)
Article
Chemistry, Analytical
Fei Liu, Aiwu Yu, Chongjun Wu, Steven Y. Liang
Summary: This paper investigates the influence of different laser processes on the size of the groove and the machining affected zone of laser cutting monocrystalline silicon. The experimental results show that the size of both the groove and the machining affected zone directly affect the cutting quality. After removing the thermal products generated by cutting, a wider cutting seam can be achieved and the surface is similar to the original.
Article
Materials Science, Multidisciplinary
Deyong Zheng, Huihui Jin, Yucong Liao, Pengxia Ji
Summary: In this study, a highly stable and efficient catalyst, fluorine-doped Co3O4 (F-Co3O4), was developed for hydrogen production by water electrolysis. The F-Co3O4 catalyst exhibited a remarkable reduction in overpotential and demonstrated excellent stability for over 100 hours.
Article
Materials Science, Multidisciplinary
Ziwen Lv, Jintao Wang, Fengyi Wang, Jianqiang Wang, Fuquan Li, Hongtao Chen
Summary: Adding Cu6Sn5 nano particles can effectively inhibit the overgrowth of intermetallic compounds at the interfaces of solder joints in electronic devices, providing a solution to this issue. A new growth mechanism of intermetallic compounds at the interfaces was identified.
Article
Materials Science, Multidisciplinary
Jun Wang, Jiawei Chen, Wanru Liao, Fangyang Liu, Min Liu, Liangxing Jiang
Summary: A BiOI/AgI/Ag plasmonic heterostructure photocathode was successfully designed through electrodeposition, ion-exchange, and illumination methods. This photocathode exhibits superior performance in photoelectrochemical water splitting.
Article
Materials Science, Multidisciplinary
Xiaoxiao Liu, Xianxian Zhou, Xiaotao Ma, Qinbo Yuan, Shibin Liu
Summary: In this study, the authors propose a method to accelerate the reaction of polysulfides in lithium-sulfur batteries using a Ni@OC Mott-Schottky heterojunction as a catalyst. The experimental results demonstrate that the charge redistribution at the Ni@OC interface accelerates electron transfer and enhances catalytic activity, leading to improved reaction kinetics and battery performance.
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Materials Science, Multidisciplinary
Lingchang Wang, Qihang Yang, Huzhen Li, Ming Wei, Qian Wang, Zhenzhong Hu, Mengmeng Zhen
Summary: Bronze titanium dioxide (TiO2(B)) is a promising anode material for lithium-ion batteries due to its high specific capacity. However, its practical applications are hindered by poor conductivity and limited electrochemical kinetics. In this study, TiO2(B)-carbon nanosheets heterostructures are synthesized to enhance the cycling performance and rate capability of TiO2(B).
Article
Materials Science, Multidisciplinary
Atul Thakur, Ritesh Verma, Ankush Chauhan, Fayu Wan, Preeti Thakur
Summary: In this study, BaFe12O19 and BaFe12O19: Epoxy (50:50) nanocomposites were synthesized using the co-precipitation method. The structural information and material properties, such as crystallite size and electrical conductivity, were characterized by XRD, FESEM, EDX, and TEM techniques.
Article
Materials Science, Multidisciplinary
Jingyu Wu, Xinyan Ma, Yong Yang
Summary: A well-defined CoS2@NC(CS-500) hierarchical binder-free catalyst cathode is constructed through in-situ grown of ZIF-67 on carbon cloth and high-temperature carbonization. The cathode shows excellent reaction kinetics and electrochemical performance, providing inspiration for developing advanced Li-CO2 battery catalysts.
Article
Materials Science, Multidisciplinary
Svetlana M. Posokhova, Vladimir A. Morozov, Kirill N. Boldyrev, Dina Deyneko, Erzhena T. Pavlova, Bogdan I. Lazoryak
Summary: This study explores the impact of synthesis method and composition on the structure and luminescence properties of K5Eu1-xHox(MoO4)4 with the palmierite-type matrix. The co-doping of Eu3+ and Ho3+ ions plays a critical role in manipulating charge transfer and luminescence efficiency in the visible and infrared regions.
Article
Materials Science, Multidisciplinary
Jian Wang, Yeting Tao, Jingsheng Wang, Youtian Tao
Summary: A new electron-transport material iTPyBI-CN is developed through non-catalytic C-N coupling reaction. It exhibits better electroluminescence efficiency in organic light-emitting diodes compared to the commercial material TPBI, due to its twisted geometry and higher energy levels.
Article
Materials Science, Multidisciplinary
Tao Zhu, Feng Huang, Shuo Li, Yang Zhou
Summary: This article combines XRD analysis and microscopic structural observation to investigate the changes in limestone after high-temperature treatment. It finds that 500 degrees C is the critical temperature for crystalline and spatial arrangement changes in limestone, and the thermal conductivity, specific heat capacity, and heat storage coefficient gradually decrease after thermal treatment.
Article
Materials Science, Multidisciplinary
Muhammad Haekal Habibie, Fransiska Sri Herwahyu Krismastuti, Abdi Wira Septama, Faiza Maryani, Vivi Fauzia
Summary: This study focuses on the synthesis of zinc oxide nanostructure from zinc recovered from galvanization ash and highlights its potential as a sustainable source of zinc and as an antibacterial agent.
Article
Materials Science, Multidisciplinary
Jingyi Li, Yixin Xing, Wei Gu, Shousi Lu
Summary: In this study, PC@CaP microparticles were fabricated using biomimetic mineralization. The results showed that under environmental stress, PC@CaP exhibited improved stability and antioxidative activity, indicating its potential use in high-added value fields.
Article
Materials Science, Multidisciplinary
Yan Liu, Shunyou Chen
Summary: In this study, TNTs were used as a drug carrier and modified with ZIF-8 and silk fibroin to obtain a new drug loading platform. The results showed that this drug-loaded platform had a good drug release effect in vitro and could promote cell proliferation and osteogenic differentiation.
Article
Materials Science, Multidisciplinary
Chunhui Zhu, Wentao Wang, Qing Zhen, Xinning Huang, Shixin Li, Shaochang Wang, Xiaoping Ma, Xiaoxia Liu, Yalong Jiao, Kai Sun, Zhuangzhi Li, Huaixin Yang, Jianqi Li
Summary: A type of stacking fault is revealed in e-InSe crystal, which is associated with a small stacking-fault energy and shows exceptional plasticity.
