Article
Chemistry, Physical
Huaiwei Zhang, Liang Bao, Ying Pan, Jing-yuan Ge
Summary: This paper illustrates a simple and facile preparation strategy for Mg-Y based nanoscale materials. The microstructure transitions and sample formation process are studied, which involve two stages of pure metal particles collision surface adsorption and low temperature heat-treatment molding. The nanoscale sample exhibits a higher hydrogen storage capacity of about 4.5 wt% compared to the as-cast alloy. Additionally, the sample also shows lower dehydrogenation temperature and reaction enthalpy.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Ziliang Chen, Hongyuan Yang, Stefan Mebs, Holger Dau, Matthias Driess, Zhaowu Wang, Zhenhui Kang, Prashanth W. Menezes
Summary: A hydrogen processing strategy is developed to improve the performance of LaNi5 as an electrocatalyst for the oxygen evolution reaction (OER). The surface of LaNi5 is reconstructed into a porous hetero-nanoarchitecture composed of gamma-NiOOH nanocrystals, which optimizes the charge transfer and structural integrity. The hydrogen-processed OER catalyst shows a significantly reduced overpotential and remarkable stability in alkaline media, making it a promising candidate for industrial applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Shuang Gao, Shan Zhang, Yongcheng Li, Riming Hu, Zhonghao Heng, Xiaochuan Shi, Peipeng Jin, Jianglan Shui
Summary: Rare earth doping is an effective method to improve hydrogen storage properties of Mg-based alloys. This study investigates the effect of rare earth (Y, Ce, La, Sc) doping on the thermal stability, electronic property, and hydrogen adsorption/desorption behavior of Mg2Ni (010) surface using first principles calculations. The results show that rare earth doping in Mg2Ni (010) surface is thermodynamically feasible and improves hydrogen diffusion and desorption energies barriers, with Ce showing the best potential.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yongyang Zhu, Shaoyang Shen, Xu-Sheng Yang, Liming Zeng, Gary Tsui, Zheng-Long Xu, Qing Zhou, Renheng Tang, K. C. Chan
Summary: This study proposes a cost-effective method to regenerate LiBH4 by ball milling hydrous lithium metaborate with low-cost Mg-based alloys. The introduction of light rare-earth metals into Mg improves the regeneration kinetics of LiBH4 by facilitating the breakage of B-O and conversion of H+ into H-. A yield of 40% can be achieved for LiBO2 center dot 2H(2)O-CeMg12 system with a relatively short ball milling duration of 10 hours. The optimized regeneration of LiBH4 is believed to be efficient and economical, utilizing an intrinsic hydrogen source in LiBO2 center dot 2H(2)O and cheap reducing agents. This finding is expected to promote the widespread use of LiBH4 for hydrogen storage.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Energy & Fuels
Yuchen Liu, Djafar Chabane, Omar Elkedim
Summary: In this study, the structure, phase stability, and electronic structure of La4MgNi19 alloy with partial substitution of La by Pr, Sm, Gd, Nd and Co substitution of Ni were investigated using density functional theory. The calculation results showed that La4MgNi19 alloy exhibited negative enthalpy of formation, indicating thermodynamic stability. When La was substituted, Pr, Nd, Sm, and Gd preferably occupied the La(4f) site. The addition of doping elements reduced the phase stability, with Pr substituted La4MgNi19 showing the highest structural stability. Co substitution of Ni destabilized the crystal structure, and the system still exhibited metallic character after substitution.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Multidisciplinary
Robert Tuttle
Summary: Solidification based grain refinement has attracted attention from researchers and industry. The study found that adding rare earth silicide or EGR to 4130 only resulted in refinement, while HY100 showed no response. Inclusions with similar compositions were observed in both alloys, but HY100's unresponsiveness was attributed to strong nickel segregation.
Article
Chemistry, Physical
Magda Peska, Katarzyna Smektalska, Julita Dworecka-Wojcik, Sylwia Terlicka, Wladyslaw Gasior, Wojciech Gierlotka, Adam Debski, Marek Polanski
Summary: This study presents a systematic investigation of the interactions between hydrogen and Mg-Ag alloys prepared by mechanical alloying. The alloys were found to be effectively synthesized with mechanical alloying, extending solubility limits compared to known phase diagrams. Further annealing enhanced synthesis to obtain well crystallized samples that could absorb significant amounts of hydrogen. Magnesium hydride and AgMg intermetallics were formed as residual products that did not react with hydrogen under the chosen conditions. Samples characterized directly after ball milling showed higher reaction kinetics with hydrogen.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Ran Wu, Huiping Yuan, Qun Luo, Zhe Fan, Lijun Jiang, Wenquan Jiang, Zhinian Li
Summary: Carbon coating can improve the electrochemical performance of rare earth hydrogen storage alloys, increasing the discharge capacity, high-rate dischargeability, and cyclic stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Green & Sustainable Science & Technology
Yongfeng Liu, Wenxuan Zhang, Xin Zhang, Limei Yang, Zhenguo Huang, Fang Fang, Wenping Sun, Mingxia Gao, Hongge Pan
Summary: Hydrogen storage remains a huge challenge for the development of a sustainable energy system, despite its importance. Light metal hydrides have high hydrogen densities but suffer from slow kinetics and poor reversibility due to strong bonds between metal atoms and hydrogen. Nanoscale particles offer a promising solution to tailor the properties of light metal hydrides and improve their performance. This review summarizes the preparation methods and hydrogen storage performance of nanostructured light metal hydrides, discusses the challenges, and explores future research prospects, highlighting the combination of nanostructuring and nanocatalysis for practical hydrogen carriers.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Yao He, Weiqiang Zhou, Jingkun Xu
Summary: Supercapacitors can effectively address the problems of energy shortage and greenhouse effect. Rare earth (RE) elements or compounds added to electrode materials greatly enhance their electrochemical performance. However, comprehensive surveys on RE-based nanomaterials for supercapacitors are lacking. This review provides a comprehensive overview of RE-based nanomaterials, including preparation methods, nanostructure engineering, compounds, and composites, along with their capacitance performances. The structure-activity relationships are discussed, and future challenges and perspectives are highlighted. This review not only guides the further development of supercapacitors but also sparks interest in RE-based nanomaterials in other research fields.
Article
Chemistry, Physical
Sahar Foorginezhad, Masoud Mohseni-Dargah, Zahra Falahati, Rouzbeh Abbassi, Amir Razmjou, Mohsen Asadnia
Summary: The study emphasizes the importance of safety considerations when using hydrogen fuel cells, despite their promising advantages as an alternative energy source. Comprehensive review on hydrogen characteristics, sensor types, international collaborations, regulations, and standards are discussed. Future directions are proposed for sensing and monitoring methods in the utilization of hydrogen fuel cells in vehicles.
JOURNAL OF POWER SOURCES
(2021)
Article
Polymer Science
Hatem A. A. Al-Aoh, Nacer Badi, Aashis S. S. Roy, Abdulrhman M. M. Alsharari, Salah Abd El Wanees, Abdulrahman Albaqami, Alex Ignatiev
Summary: Polyaniline fibers were nucleated in one dimension in an ice medium with the presence of anionic surfactant and compared to bulk polyaniline prepared at an optimum temperature. Structural analysis using Fourier-transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD) was conducted. The conductivity study revealed higher conductivity of polyaniline fibers compared to bulk polyaniline. Hydrogen storage measurements demonstrated the ability of polyaniline fibers to adsorb and desorb hydrogen at high capacity and lower temperatures.
Article
Chemistry, Physical
Yezi Lu, Lulin Tang, Ping Wang, Miao He, Cheng Yang, Zhenxing Li
Summary: Rare earth-based alloy nanostructures show great potential as materials in the hydrogen evolution reaction (HER), with a relatively negative enthalpy of alloy formation compared to traditional transition metal alloys. They possess the advantages of transmission metal catalysts and perform better in selectivity and stability. However, the reduction potentials of the rare earth (RE) group are relatively low, and the synthesis methods of the RE alloy nanostructure are crucial.
Article
Chemistry, Physical
Kartick Chandra Majhi, Mahendra Yadav
Summary: The water electrolysis process requires high input energy to accelerate the slow reactions of hydrogen and oxygen evolution. The development and application of efficient electrocatalysts are essential for these reactions. In this study, rare earth phosphate PrPO4 exhibited better catalytic activity than YPO4 catalyst for the hydrogen evolution reaction (HER) in an acidic medium.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
S. Gupta, A. V. Lukoyanov, Yu. V. Knyazev, Yu. I. Kuz'min, K. G. Suresh
Summary: Rare earth intermetallics RRhSi (R=Tb, Dy, Ho) exhibit antiferromagnetic ordering and large magnetocaloric effect, with DyRhSi and HoRhSi compounds showing field-induced metamagnetic transition. Theoretical calculations confirm the antiferromagnetic ordering and negligible contribution of magnetic moment from Rh atom in these compounds. Optical measurements support the theoretical calculations, revealing electronic states involved in the formation of magnetic and spectral properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
E. Albanese, M. Corno, M. Baricco, B. Civalleri
Summary: Modeling thin films of beta-Ca(BH4)(2) reveals that nanostructuration of the material can significantly decrease dehydrogenation enthalpy. Quantum mechanical calculations show that reducing the size from bulk to nanoscale leads to a notable decrease in decomposition enthalpy, supporting the potential advantages of nanostructured metal borohydrides for energy storage applications.
RESEARCH ON CHEMICAL INTERMEDIATES
(2021)
Article
Chemistry, Physical
Valerio Gulino, Matteo Brighi, Fabrizio Murgia, Peter Ngene, Petra de Jongh, Radovan Cerny, Marcello Baricco
Summary: Research has shown that by mixing with MgO, the Li-ion conductivity of LiBH4 can be improved, but there are still lifecycle issues at room temperature, which can be mitigated by applying multiple charge/discharge cycles at 60 degrees C to form a stable solid electrolyte interphase.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Federico Scaglione, Sergio Arnaboldi, Cristian Viscardi, Marcello Baricco, Mauro Palumbo
Summary: This paper reports two case studies where solidification processes were successfully investigated using CALPHAD-based methodologies. The first case involves the use of thermodynamic databases to describe the solidification processes of a precious Au-base alloy containing Ir as a grain refiner. The second case involves the development and use of a quaternary database for Al-Mg-Si-Er alloys for additive manufacturing.
Review
Chemistry, Analytical
Matteo Dotoli, Riccardo Rocca, Mattia Giuliano, Giovanna Nicol, Flavio Parussa, Marcello Baricco, Anna Maria Ferrari, Carlo Nervi, Mauro Francesco Sgroi
Summary: The electrification of passenger cars is an effective way to reduce noxious emissions and mitigate global warming. The use of Li-ion battery packages as energy storage systems is required for this paradigm shift in the transport sector. The integration of battery management systems and sensors is crucial for ensuring the safe operation of automotive battery packages.
Article
Energy & Fuels
Adam Revesz, Marcell Gajdics, Miratul Alifah, Viktoria Kovacs Kis, Erhard Schafler, Lajos Karoly Varga, Stanislava Todorova, Tony Spassov, Marcello Baricco
Summary: This study investigated the structural, thermal stability, and electrochemical performance of a metallic glass after high-pressure torsion deformation with the addition of carbon nanotubes. Results showed that the nanotubes improved the electrochemical capacity initially, but led to a significant decrease after severe deformation.
Article
Chemistry, Physical
Jussara Barale, Erika M. Dematteis, Giovanni Capurso, Bettina Neuman, Stefano Deledda, Paola Rizzi, Fermin Cuevas, Marcello Baricco
Summary: This study focuses on the industrial production of the alloy TiFe0.85Mn0.05 as an H2 carrier in metal hydride-based hydrogen storage systems. The experimental results show that the alloy exhibits fast kinetics, good resistance to gas impurities, and storage stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Mauro Palumbo, Kazuaki Kisu, Valerio Gulino, Carlo Nervi, Lorenzo Maschio, Silvia Casassa, Shin-ichi Orimo, Marcello Baricco
Summary: This study investigates a metal borohydride ammonia borane complex as an electrolyte for magnesium-based batteries. The compound's characteristics are characterized using theoretical methods, and the migration of magnesium ions is analyzed. The results show that the activation energy for ion migration in solid-state electrolytes can be reliably estimated using DFT-based methods.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Jussara Barale, Federico Nastro, Davide Violi, Paola Rizzi, Carlo Luetto, Marcello Baricco
Summary: This study comprehensively presents the on-site compression of green hydrogen using metal hydrides, including the setup of a metal hydride compressor and the energy consumption and efficiency considerations. The compressor achieves compression of hydrogen from 28 bar to 250 bar, with high isentropic efficiency and average hydrogen flowrate.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Laura de Kort, Peter Ngene, Marcello Baricco, Petra de Jongh, Valerio Gulino
Summary: It was found that the addition of silica nanoparticles to iodide-substituted LiBH4 significantly improves the ion conductivity and cycle life of all-solid state batteries. The synthesized h-Li(BH4)0.8(I)0.2-SiO2 demonstrates a Li+ conductivity of 9.3 x 10-5 S cm-1 at room temperature and an improved stability against Li-metal. The all-solid state battery Li|h-Li(BH4)0.8(I)0.2-SiO2|TiS2 showed good long-term cyclability, demonstrating the enhanced cycling stability of the electrolyte due to the addition of oxide nanoparticles.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Annalisa Ferrarotti, Elisa Vittoria Ghiggini, Riccardo Rocca, Matteo Dotoli, Federico Scaglione, Claudio Errigo, Giancarlo Marchiaro, Marcello Baricco
Summary: Mathematical modelling and software simulation are effective tools for understanding and predicting corrosion processes. The COMSOL Multiphysics 5.6 software provides validated mathematical models for predicting and preventing corrosion. This study compared simulation results with laboratory tests to investigate the corrosion of zinc-coated steel sheets. The results of mathematical modelling and empirical tests allow estimation of the stability of the protective zinc layer over time. Discrepancies between analytical methods led to modifications in the model for better coherence with experimental data. A computational model of corrosion phenomena in an automotive component was developed, which could potentially replace time-consuming and expensive laboratory tests.
Article
Chemistry, Physical
Daniele De Caro, Michele Maria Tedesco, Jaume Pujante, Andrea Bongiovanni, Giovanni Sbrega, Marcello Baricco, Paola Rizzi
Summary: Sustainability is a crucial value for our society, and aluminum alloys are promising materials for achieving sustainability goals due to their strength and lightweight. However, the production of aluminum alloys emits a high amount of CO2. Therefore, the study and development of aluminum alloys with increased scrap content are essential. This study compared two sheet-aluminum 6181 alloys with different scrap content and a 6181 alloy from primary production. Results showed that secondary production alloys contained higher amounts of manganese, iron, and copper. The metallurgical and mechanical behaviors were similar to the primary produced alloy, but a decrease in formability was observed in high scrap content aluminum alloys.
Review
Materials Science, Multidisciplinary
Michele Maria Tedesco, Daniele De Caro, Paola Rizzi, Marcello Baricco
Summary: In this review, we compared nine different chemical compositions and several heat treatments of quenching and partitioning steels, and correlated these parameters with reported mechanical properties. We also considered sustainability and circular economy approaches for applications in the automotive sector, providing guidance for lightweighting and decarbonization of the steel industry.
Review
Energy & Fuels
Martin Dornheim, Lars Baetcke, Etsuo Akiba, Jose-Ramon Ares, Tom Autrey, Jussara Barale, Marcello Baricco, Kriston Brooks, Nikolaos Chalkiadakis, Veronique Charbonnier, Steven Christensen, Jose Bellosta von Colbe, Mattia Costamagna, Erika Dematteis, Jose-Francisco Fernandez, Thomas Gennett, David Grant, Tae Wook Heo, Michael Hirscher, Katherine Hurst, Mykhaylo Lototskyy, Oliver Metz, Paola Rizzi, Kouji Sakaki, Sabrina Sartori, Emmanuel Stamatakis, Alastair Stuart, Athanasios Stubos, Gavin Walker, Colin J. Webb, Brandon Wood, Volodymyr Yartys, Emmanuel Zoulias
Summary: There has been a significant increase in industrial and public interest in hydrogen technologies recently, as hydrogen is seen as the ideal means for storing, transporting, and utilizing energy in combination with renewable and green energy sources. Green hydrogen production, storage, and usage are considered key technologies in future energy systems. Material-based systems for hydrogen storage and compression offer advantages over traditional systems, including lower maintenance costs, higher reliability, and safety. This paper summarizes the latest developments in hydrogen carriers for storage and compression and provides an overview of research activities in this field.
PROGRESS IN ENERGY
(2022)
Article
Electrochemistry
Matteo Dotoli, Emanuele Milo, Mattia Giuliano, Arianna Tiozzo, Marcello Baricco, Carlo Nervi, Massimiliano Ercole, Mauro Francesco Sgroi
Summary: This article focuses on the energy storage technology for electric vehicles using lithium-ion batteries. The optimization of kilometric ranges and charging times is discussed, emphasizing the tradeoff between time saving and preserving cell performance. The implementation of new multistage constant current profiles and their performances after 1000 cycles are compared to a reference profile. Additionally, the physicochemical and electrochemical characterization of aged cells and their possible implementation on board are presented and discussed.
Review
Energy & Fuels
Luca Pasquini, Kouji Sakaki, Etsuo Akiba, Mark D. Allendorf, Ebert Alvares, Jose R. Ares, Dotan Babai, Marcello Baricco, Jose Bellosta von Colbe, Matvey Bereznitsky, Craig E. Buckley, Young Whan Cho, Fermin Cuevas, Patricia de Rango, Erika Michela Dematteis, Roman V. Denys, Martin Dornheim, J. F. Fernandez, Arif Hariyadi, Bjrn C. Hauback, Tae Wook Heo, Michael Hirscher, Terry D. Humphries, Jacques Huot, Isaac Jacob, Torben R. Jensen, Paul Jerabek, Shin Young Kang, Nathan Keilbart, Hyunjeong Kim, Michel Latroche, F. Leardini, Haiwen Li, Sanliang Ling, Mykhaylo V. Lototskyy, Ryan Mullen, Shin-ichi Orimo, Mark Paskevicius, Claudio Pistidda, Marek Polanski, Julian Puszkiel, Eugen Rabkin, Martin Sahlberg, Sabrina Sartori, Archa Santhosh, Toyoto Sato, Roni Z. Shneck, Magnus H. Sorby, Yuanyuan Shang, Vitalie Stavila, Jin-Yoo Suh, Suwarno Suwarno, Le Thi Thu, Liwen F. Wan, Colin J. Webb, Matthew Witman, ChuBin Wan, Brandon C. Wood, Volodymyr A. Yartys
Summary: This review summarizes the latest research progress on hydrides based on magnesium and intermetallic compounds for energy storage. It covers topics such as hydrogen sorption mechanisms, synthesis and processing techniques, catalysts, and the development of new compounds. The article highlights the important role of these hydrides in the clean energy transition and the deployment of hydrogen as an energy vector.
PROGRESS IN ENERGY
(2022)
Article
Chemistry, Physical
M. H. Abbasi, R. Tavakoli, S. G. Shabestari
Summary: The correlation between atomic-scale structure and glass-forming ability of ternary bulk metallic glasses was investigated using molecular dynamics simulation. It was found that the potential energy of the icosahedra reflects the geometric ordering, while the virial stress energy density reveals the chemical ordering. Based on this discovery, a new prediction criterion for glass-forming ability was proposed and validated using experimental data.
Article
Chemistry, Physical
Haimin Zhai, Shuai Cui, Sheng Li, Dongqing He, Bo Cheng, Xinjian Zhang, Wensheng Li, Zhornik Viktor, Uladzimir Seniuts
Summary: Laser shock peening (LSP) treatment significantly affects the phase structure and properties of titanium-based BMG materials, promoting rejuvenation and introducing heterogeneity. This leads to improved plasticity and resistance to crack propagation. LSP-1 specimen exhibits higher hardness and plasticity, reducing fatigue peeling wear caused by brittleness. However, excessive LSP results in increased susceptibility to pitting and significantly reduces tribocorrosion resistance.
Article
Chemistry, Physical
Olga A. Blatova, Maria A. Solodovnikova, Ekaterina M. Egorova, Vladislav A. Blatov
Summary: This study applied a universal geometrical-topological approach to analyze the crystal structures of intermetallic compounds deposited in the Inorganic Crystal Structure Database. By exploring the local atomic configurations, they identified different types of coordination polyhedra and proposed criteria for determining geometric instability. This research provides useful indicators for checking crystallographic information and validating structural models.
Article
Chemistry, Physical
Jose M. Torralba, Diego Iriarte, Damien Tourret, Alberto Meza
Summary: The amount of globally recycled e-waste is less than 20% of the total produced. One of the causes for this low recycling rate is the complex and expensive selective sorting of metals. However, recent research has shown that high entropy alloys (HEAs) can be made from complex alloy mixtures, reducing the dependence on pure critical metals. It has been demonstrated that e-waste can be used to produce competitive HEAs.
Article
Chemistry, Physical
M. Y. He, Y. F. Shen, N. Jia, W. Y. Xue, J. P. Li
Summary: This study successfully improved the mechanical properties of high-entropy alloys (HEAs) through phase decomposition modulation, achieving strengthening of low-cost CuFeMnNi HEAs. The annealed HEAs exhibited excellent mechanical properties, with significantly increased yield strength and maintained satisfactory elongation.
Article
Chemistry, Physical
D. V. Louzguine-Luzgin, F. R. Pratama
Summary: In this study, the growth rate of a crystalline phase in the Al-Fe-Mn-Si metallic glass was measured in real time using transmission electron microscopy. The effective diffusion coefficient related to the slowest diffusing element (Mn) was estimated. The results showed that the growth rate of the crystalline phase was significantly faster compared to pure Al and AlFe compound.
Article
Chemistry, Physical
Zhenhua Han, Yubo Tian, Jun Yang, Jianzhao Li, Jinyang Zhang, Gang Liu, Ran Wei, Guojun Zhang
Summary: In this study, a novel medium-entropy alloy (MEA) (Fe65Ni15Cr10Co10)92Ti5Al3 with a dual heterogeneous structure was developed by adding Ti and Al to a previously reported Fe65Ni15Co10Cr10 MEA. The MEA exhibited ultra-high ultimate tensile strength and work hardening extent at room temperature. The addition of Ti and Al induced precipitation and resulted in a continuous FCC -> BCC martensitic transformation and a transformation-induced plasticity effect. The excellent mechanical properties of the alloy were attributed to the synergistic effects of hetero-deformation induced strengthening, precipitation strengthening, and TRIP.
Article
Chemistry, Physical
S. Y. Liang, L. T. Zhang, B. Wang, Y. J. Wang, E. Pineda, J. C. Qiao
Summary: This study focuses on the influence of the thermomechanical protocol on the aging or rejuvenation of glass by decoupling the thermal and mechanical processes. The results show that Labased metallic glass exhibits material hypomnesia, with a clearer rejuvenation trend observed after imposing increasing amplitude strain oscillations. There is a threshold value of the oscillation amplitude that separates the effects of the protocol into acceleration of aging or rejuvenation. This study reveals the correlation between the thermomechanical properties of metallic glass and the previous application of strain oscillations of various amplitudes, providing an effective tool for regulating the structural state of metallic glasses through a simple-operated method.
Article
Chemistry, Physical
Chihui Liu, Hua Zhang, Qing Wang, Panzhi Wang, Jiadian Yang, Fanchao Meng, Xin Zhou, Lilong Zhu, Shangzhou Zhang, Liang Jiang
Summary: Thermal deformation behavior and microstructure evolution of GH141 alloy were efficiently studied using high-throughput double-cone gradient compression. Different compression temperatures resulted in a wide gradient equivalent strain distribution and gradient microstructure. The dynamic recrystallization mechanism shifted towards discontinuous dynamic recrystallization with increasing compression temperature.
Article
Chemistry, Physical
D. Dubaux, J. Zollinger, M. -C. de Weerd, J. Ghanbaja, S. Mathieu, S. Migot, P. Boulet, S. Sturm, V. Fournee, M. Sicot, J. Ledieu
Summary: We report the formation of large and highly twinned dendrites of the Al13Fe4 approximant phase embedded in an fcc Al-rich matrix. Using a rapid cooling technique, the approximant appears as a 10-fold dendrite. The grain distributions within the arm are complex and a single dendrite arm can contain up to four different orientations. Three types of twins, namely {100}, {001} and {201} twins, have been identified. A growth mechanism involving heteroepitaxial growth from a decagonal Al-Fe quasicrystalline seed is proposed to explain the formation of these specific 10-fold motifs.
Article
Chemistry, Physical
Ming Yang, Yibo Zhang, Jie Dong, Yan Huang, Zhichao Lu, Liang Wang, Xuerui Wei, Zhengdong Fu, Jinkui Zhao, Wenli Song, Wei Li, Yuntao Liu, Dong Ma
Summary: A multi-element microalloying strategy has been used to improve the microstructure and mechanical properties of CuZr-based bulk metallic glass composites. Microalloying effectively refines the CuZr phase and results in finely dispersed B2 crystallites embedded in the BMG matrix, leading to the formation of centimeter-sized BMGCs with good mechanical properties.
Article
Chemistry, Physical
Xuejie Zhu, Xuexi Zhang, Mingfang Qian, Ziyi Wang, Aibin Li, Zongning Chen, Muhammad Imran, Lin Geng
Summary: The homogeneous superelastic behavior in shape memory alloys (SMAs) is crucial for their functional and structural fatigue properties, as well as their stable elastocaloric effect (eCE). In this study, a Ti-22Nb-4Zr-2Ta plate was prepared with a strong recrystallized texture, resulting in a completely recoverable superelastic strain and narrow hysteresis. The observation of strain and temperature evolution revealed the importance of diffuse transformation and favorable texture in achieving mesoscopically homogeneous transformation and related elastocaloric effect.
Article
Chemistry, Physical
Mohammad Navazani, Sitarama Raju Kada, Daniel Fabijanic, Matthew Barnett
Summary: This study investigates the effect of Cu and Al addition on an alloy containing multiple principal elements. The results show that adding small amounts of Cu can improve the alloy's ductility and the hardness of the FCC phase can be predicted using a hybrid model. Unlike previous studies, the corrosion resistance of the alloy is not affected by Cu addition, indicating its potential for further development into a fine-grained stainless steel alloy.
Article
Chemistry, Physical
Fatemeh Azizian, Homam Naffakh-Moosavy, Fatemeh Bagheri
Summary: Novel biodegradable Zn-xCu-0.8Mn-0.4Ag alloys were prepared in this study, and the effects of Cu addition and hot extrusion process on microstructure, mechanical properties, and cytotoxicity of the alloys were investigated. The results showed that adding copper and performing a hot extrusion process can significantly improve the mechanical properties of the alloys, making them potential candidates for cardiovascular stents.
Article
Chemistry, Physical
Ivan A. Ditenberg, Denis A. Osipov, Ivan Smirnov, Konstantin V. Grinyaev
Summary: This study investigates the effect of high-temperature annealing on the structural-phase state and microhardness of Ni3Al samples obtained by spark plasma sintering after high-energy ball milling. The results show that certain annealing temperatures promote grain growth and high-density nucleation, leading to the formation of a fine-grained structural state. The study also analyzes the influence of annealing temperature on the strengthening mechanisms.
