Article
Crystallography
Boris B. Straumal, Roman Kulagin, Brigitte Baretzky, Natalia Yu. Anisimova, Mikhail V. Kiselevskiy, Leonid Klinger, Petr B. Straumal, Olga A. Kogtenkova, Ruslan Z. Valiev
Summary: This review discusses the intersection of phase transformations, severe plastic deformation (SPD), and high-entropy alloys (HEA) in materials science. The use of SPD techniques enables the determination of single-phase regions and the formation of nanoparticles in HEAs, influencing their composition, structure, and properties.
Article
Chemistry, Multidisciplinary
Ejaz Ahmed, Durga Prasad Karothu, Ahmed Slimani, Jad Mahmoud Halabi, Ibrahim Tahir, Kevin Quiros Canales, Pance Naumov
Summary: This study reports the remarkably rapid lattice switching of molecular martensitic materials, which exceeds other phase transitions by several orders of magnitude. These materials have the advantages of rapid response and lightweight, making them prospective substitutes for ultrafast and clean energy transduction.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Stefan Schwabe, Klara Luenser, Daniel Schmidt, Kornelius Nielsch, Peter Gaal, Sebastian Faehler
Summary: This study demonstrates that a thermoelastic martensite to austenite transformation can be completed within 10 ns, and the temperature has an influence on the transformation rate.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2022)
Article
Astronomy & Astrophysics
Jose R. Espinosa, Ryusuke Jinno, Thomas Konstandin
Summary: A new formulation for obtaining the tunneling action for vacuum decay based on the tunneling potential was recently developed. The new action was derived by requiring its variation to lead to the correct equations of motion and the same value for the action as evaluated on the Euclidean bounce. An alternative derivation of the tunneling potential action via canonical transformations is presented, discussing single-field, multi-field, and gravity cases. The possible application of the new approach to the calculation of the functional determinant prefactor in the tunneling rate is also commented on.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Laura Rodriguez, Felip Sandiumenge, Carles Frontera, Jose Manuel Caicedo, Jessica Padilla, Gustau Catalan, Jose Santiso
Summary: The complex phase and microstructural trajectories across the metal-insulator transition in strained VO2 films involve the formation of transient metastable phases near a thermodynamic triple point. The detailed analysis using in-situ synchrotron X-ray diffraction reveals subtle complexities in the structure of epitaxial films, with local stresses inducing a transformation from the M1 phase to the triclinic phase and ultimately to the monoclinic M2 phase. This transformation path provides essential insights for understanding the electronic and mechanical properties of the films at the nanoscale.
Article
Chemistry, Multidisciplinary
Takayuki Matsui, Tadayoshi Matsumori, Yuji Ito, Yoko Hase, Hiroyuki Yoshida
Summary: This article applies critical transition analysis to 3D ordered soft materials and demonstrates the visualization of phase transitions through the choice of appropriate early warning indicators. This approach can be easily adapted to various material systems and microscopy techniques, providing a powerful tool for studying complex critical transition phenomena.
Article
Engineering, Electrical & Electronic
Murat Ayyildiz, Gokhan Kirat, Mehmet Ali Aksan
Summary: In this study, Heusler alloys with different Mo content were synthesized, and their magnetic and phase transition behaviors were investigated by magnetization measurements. It was found that increasing Mo content reduces the T1-T2 temperature interval and affects the blocking temperature. In addition, Mo substitution also significantly influences the magnetization values of the samples, reaching maximum values at specific magnetic fields and temperatures.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Song Li, Zhaohui Jin, Xiaoguo Gong, Hua Huang, Shaokang Guan, Guangyin Yuan
Summary: Mg-Sc alloys with less than 25 atomic percent Sc exhibit shape memory effects, and the martensitic transformation temperature can be elevated by tuning the chemical ordering and microstructure of Mg-Sc precipitates. Increased ground-state energy difference and decreased vibra-tional free energy difference between austenite and martensite contribute mainly to the stabilized phase transformations.
Article
Materials Science, Multidisciplinary
Jiaming Zhu, Hong-Hui Wu, Yuan Wu, Haoliang Wang, Tianlong Zhang, Hu Xiao, Yunzhi Wang, San-Qiang Shi
Summary: This study investigated the influence of Ni4Ti3 precipitation on martensitic transformations in NiTi shape memory alloys through computer simulations. The results showed that Ni concentration gradient and internal coherency stress fields play crucial roles in the structure and development of martensitic domains.
Article
Chemistry, Physical
Katarina Bartova, Maria Domankova, Jozef Barta, Peter Pastier
Summary: Intergranular corrosion is a significant process affecting the behavior of austenitic stainless steels. Factors such as steel composition, prior deformation, and temperature influence the degree of sensitization. Isothermal annealing affects the precipitation of secondary phases, and longer annealing times result in increased amounts of secondary phases. Thermo-Calc software is used to calculate the equilibrium state of secondary phases.
Article
Multidisciplinary Sciences
Runa Koizumi, Dmitry Golovaty, Ali Alqarni, Bing-Xiang Li, Peter J. Sternberg, Oleg D. Lavrentovich
Summary: The morphogenesis of living systems involves unusual topological shape transformations. In this study, a droplet of a nematic liquid crystal changes its equilibrium shape from a simply connected tactoid to a torus. This topological transformation is caused by the interplay of nematic elastic constants, facilitating splay and bend of molecular orientations in tactoids but hindering splay in toroids. This elastic anisotropy mechanism provides insights into topology transformations in morphogenesis and opens possibilities for controlling and transforming the shapes of liquid crystal droplets and related soft materials.
Article
Nanoscience & Nanotechnology
Jin-Sung Hong, Young-Kook Lee
Summary: The mechanism of dislocation multiplication during thermally-induced gamma austenite <-> e martensite transformation in the Fe-17Mn alloy was investigated using an in-situ transmission electron microscope. Dislocations were introduced in gamma at grain boundaries and inside the grains during thermally - induced gamma <-> e transformations. These dislocations played different roles, including constituting e martensite and returning to grain boundaries during e -> gamma reverse transformation, as well as being introduced by plastic deformation during gamma <-> e transformations.
SCRIPTA MATERIALIA
(2023)
Article
Metallurgy & Metallurgical Engineering
Rui Wang, Fenghao Li, Zhonghao Wu, Yan Kang, Jing Fan, Zhiqiang Yu, Zhijie Yan, Shen Du, Juergen Eckert
Summary: The precipitation and transformation of carbides during tempering of high-temperature solution-treated 7Cr14 martensitic stainless steel were investigated. M3C and M23C6 carbides precipitated during tempering, with activation energies of 120 ± 7 and 272 ± 13 kJ mol(-1), respectively. The precipitation of M3C and M23C6 carbides was primarily controlled by C and Cr atomic diffusion, respectively.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Michal Keret-Klainer, Royi Padan, Yuri Khoptiar, Yaron Kauffmann, Yaron Amouyal
Summary: This study focuses on the effects of heat treatments on the microstructure, thermal and electrical conductivities of Ni50.9Ti29.6Hf19.5 SMA. The results show that heat treatments significantly affect the microstructure and increase the transformation temperature and thermal conductivity of the alloy.
JOURNAL OF MATERIALS SCIENCE
(2022)
Correction
Thermodynamics
E. Ortiz, J. Romero, E. Martinez
Summary: A correction to this paper has been published.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Materials Science, Multidisciplinary
Madeeha Riaz, Manahil Najam, Hina Imtiaz, Farooq Bashir, Tousif Hussain
Summary: This study focuses on the structural and biological analysis of Zn-Cu based biodegradable alloys for orthopedic applications. The results indicate that the alloys have good electrical conductivity and biocompatibility, with potential for promoting bone growth and healing process. Additionally, the alloys exhibit a low corrosion rate and improved corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rafael V. M. Freire, Dominique Celeste de A. Dias, Jose Yago Rodrigues Silva, Dayane Kelly Dias do Nascimento Santos, Larissa T. Jesus, Ricardo O. Freire, Severino A. Junior
Summary: This study reports the extraction and isolation of euphol from nature, its adsorption in nanosized ZIF-8, and the efficacy of this system against cancer cells. Experimental and simulation results show that ZIF-8 can enhance the effectiveness of euphol against cancer cells and selectively target cancer cells.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Awad, Awatif A. Hendi, Maha M. Almoneef, Maymunah Alwehaibi, Khalid M. Ortashi, Wadha Alenazi, Fatimah S. Alfaifi, Shareefa Alahmariye, Asma Alangery, Warda Ali Alghoubiri, Haia Aldosari
Summary: In this study, magnesium-doped zinc oxide nanoparticles were synthesized and characterized. The research findings show that magnesium doping can alter the crystal structure and optical properties of zinc oxide, while enhancing its dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
F. J. Willars-Rodriguez, I. R. Chaverz-Urbiola, M. A. Hernandez-Landaverde, A. Zavala-Franco, E. A. Chavez-Urbiola, P. Vorobiev, Yu V. Vorobiev
Summary: This study focuses on manganese doped CdS thin films synthesized by chemical bath deposition. The incorporation of Mn2+ cations in CdS was found to influence the crystalline structure, morphology, and optoelectronic properties. Doped thin films exhibited a uniform hexagonal structure, changed growth orientation, and showed scale-like and needle-like morphologies. The bandgap and rectification speed of Schottky diodes were modified by introducing manganese. This study suggests the potential for affordable high-speed optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Mehdi Javidi, Hooman Karimi Abadeh, Fatemeh Namazi, Hamid Reza Yazdanpanah, Narjes Shirvani Shiri
Summary: This study investigated the synergistic effect of temperature, solution velocity, and sulphuric acid concentration on the corrosion behavior of carbon steel using response surface methodology. The results showed that temperature affected anodic reactions, solution velocity influenced cathodic reactions, and acid concentration altered the corrosion mechanisms by changing the properties of the surface layer.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
R. Sakthivel, Thirumoorthy Kulandaivel, Kirankumar Venkatesan Savunthari, K. Mohanraj, Hans-Uwe Dahms, Aswin kumar Anbalagan, Manjunath Rangasamy, Kien-Voon Kong
Summary: In this study, saturated fatty acids were incorporated with silane to modify viscose fabric, resulting in superhydrophobic and superoleophilic properties. The modified fabric showed excellent separation efficiency for oil and organic solvents, with high absorption capacity. The modified fabric also exhibited durability and retained its properties in harsh conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Wei Zhang, Hong Lei, Wenqing Liu, Zefang Zhang, Yi Chen, Xiaogang Hu, Xiangshan Ye
Summary: In this study, EDTA-grafted alumina composite abrasives were produced by a two-step process for the CMP of sapphire substrates. Experimental results showed that the modified abrasives exhibited better dispersion properties and significantly improved polishing efficiency, with higher material removal rates and lower surface roughness. The combination of chemical reaction and mechanical action enhanced the CMP performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Shumaila Rafaqat, Bushra Perveen, Warda Raqba, Warda Imran, Arshad Hussain, Naeem Ali
Summary: This study developed a MnP-based biosensor for quantitative measurement of dye concentrations using electrochemical signals. The effects of two different dyes on MnP activity were investigated, with one dye showing inhibitory effects and the other dye having no effect. The study demonstrates the potential application of enzyme-based biosensors in dye detection and toxicological monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinyan Shi, Oguzhan Yavuz Bayraktar, Baris Bayrak, Burak Bodur, Ali Oz, Gokhan Kaplan, Abdulkadir Cuneyt Aydin
Summary: The elemental composition of precursors is crucial for the performance development of geopolymers. The use of lime instead of metakaolin increases the fluidity and mechanical properties of geopolymers, while the addition of gypsum decreases them. Furthermore, higher lime content exacerbates the negative effect of gypsum.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
V. Murugabalaji, Matruprasad Rout, Harsh Soni, Biranchi Narayan Sahoo
Summary: This study focuses on the corrosion characteristics of AA 7075 and AA 7075 based hybrid composite fabricated using stir casting and hot rolling techniques. The results show that the hybrid composite produced by hot cross rolling exhibits better corrosion resistance compared to the base metal. The addition of a small amount of graphite improves the bonding between the matrix and reinforcements, and the hot cross rolling enhances this bonding, leading to the formation of a strong passivation oxide layer and increased charge transfer resistance, thereby improving corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Fangkun Ning, Qinghao Shi, Shuping Kong, Weitao Jia, Lifeng Ma
Summary: The paper investigates a new method of rolling sheets with variable chamfering amounts in both the transversal and normal directions. The feasibility of the technological process was tested through simulation and compared with experimental results. Three important process parameters, temperature, stress, and flow velocity, were used to evaluate the effects on chamfering amount before determining the optimal angle. The spread formula for evaluating the shape quality of the plate after ECR was obtained through testing and theory.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aqeel Abbas, M. A. Hussein, Mohamed Javid
Summary: In this study, the AM60 magnesium alloy was processed using high-energy ball milling, and the results showed that different reinforcement agents had certain effects on particle size, crystallite size, lattice strain, and dislocation density.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
D. S. Mahmoud, E. M. Eldesouki, W. M. Abd El-Gawad
Summary: The development of flexible and lightweight microwave-absorbing materials has become a trendy topic. This study focuses on enhancing the microwave-absorbing performance of butadiene-acrylonitrile rubber (NBR) by incorporating novel reinforcing nanofillers. The results show that the NBR nanocomposite with a loading of 16 parts per hundred rubber (phr) of LiFe 20%/Si has the best microwave-absorbing performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)