Article
Materials Science, Multidisciplinary
Kapil K. Gupta, Saber Haratian, Shivangi Gupta, Oleg V. Mishin, Rajan Ambat
Summary: The effect of cooling rate-induced microstructural changes on corrosion resistance in a CO2-saturated 3.5 wt% NaCl solution was investigated for API L80-1Cr steel. The corroded layer consists primarily of siderite and undissolved cementite. The amount of FeCO3 is higher in the water-cooled sample, while the furnace-cooled sample contains more akagenite. Comparing different cooling rates, the furnace-cooled condition provides better CO2 corrosion resistance.
Article
Materials Science, Multidisciplinary
P. Bhuyan, S. K. Pradhan, R. Mitra, Sumantra Mandal
Summary: This study investigates the influence of strain on the microstructure and high-temperature hot corrosion behavior in Alloy 617. The highly strained specimens showed improved resistance to HTHC due to enhanced Cr diffusion and formation of a continuous, compact Cr-rich oxide film. Recrystallization and evolution of Cr-rich carbides in the strained specimens during HTHC testing increased their likelihood of resisting the aggressive environment for a prolonged duration.
MATERIALS CHARACTERIZATION
(2021)
Article
Materials Science, Multidisciplinary
Yuexing Liang, Guoai Li, Li Liu, Jiantang Jiang, Jian Cao, Wenzhu Shao, Liang Zhen
Summary: In this study, a high-strength and anti-intergranular corrosion Al-Zn-Mg-Sc-Zr alloy was designed and the effects of Sc addition and Cu removal on the microstructure, mechanical properties and corrosion behavior were investigated. The underlying causes of intergranular corrosion and exfoliation corrosion of the alloy were analyzed, and the corrosion mechanism was obtained. The alloy exhibited excellent mechanical properties and resistance to intergranular corrosion and exfoliation corrosion.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Yang Zhao, Han Li, Chaojie Jing, Fangchao Zhao, Dingfei Zhang, Fusheng Pan
Summary: The effects of various Gd additions on the microstructure evolution, tensile properties, and corrosion resistance of Mg-6Zn-0.5Ca-1Mn (ZMX6105) alloys were examined. The addition of Gd promoted the formation of Ca2Mg6Zn3 phase during solidification and inhibited dynamic recrystallization, resulting in the refinement of dynamic recrystallized grains and strengthening of basal texture. Additionally, the ZMX6105-0.2Gd alloy exhibited excellent tensile properties and optimal corrosion resistance in a 3.5 wt% NaCl solution.
Article
Chemistry, Physical
Masaki Tahara, Kazuya Hasunuma, Hideki Hosoda
Summary: This study investigated the decomposition process of the isothermal alpha '' phase in beta-Ti alloys, and found that the resulting alpha + beta dual phase inherited the microstructural characteristics of the alpha ''(iso) phase. The research results indicate the existence of a strict variant selection rule between the decomposed alpha and beta phases, with a specific variant combination observed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Biomedical
Diana C. Martinez, Anna Dobkowska, Romy Marek, Hanna Cwieka, Jakub Jaroszewicz, Tomasz P. Plocinski, Crtomir Donik, Heike Helmholz, Berengere Luthringer-Feyerabend, Berit Zeller-Plumhoff, Regine Willumeit-Roemer, Wojciech Swieszkowski
Summary: This study investigated the degradation of an Mg-0.45Zn-0.45Ca (ZX00) screw in vitro and in vivo. The results showed that the ZX00 alloy promoted bone healing and the formation of new bone. Despite the correlation with the production procedure, the ZX00 alloy was still suitable for temporary bone implants.
BIOACTIVE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Baoxian Su, Binbin Wang, Liangshun Luo, Liang Wang, Binqiang Li, Chen Liu, Yanqing Su, Yanjin Xu, Haiguang Huang, Jingjie Guo, Hengzhi Fu, Yu Zou
Summary: In this study, Ti-6Al-3Nb-2Zr-1Mo alloys were processed using electron beam surface melting (EBSM) technology, and their microstructure and corrosion performance were compared with wrought counterparts. The results show that the EBSM sample exhibits better corrosion resistance due to the formation of a relatively more stable passive film induced by a higher fraction of phase boundaries in the fine alpha '-phase, and the alleviated heterogeneous distribution of compositions between alpha (alpha ')- and beta-phases resulting from rapid cooling during the EBSM process, which further leads to the absence of strong galvanic corrosion between different phases.
Article
Materials Science, Multidisciplinary
Xu Liu, Lin Song, Andreas Stark, Uwe Lorenz, Zhanbing He, Junpin Lin, Florian Pyczak, Tiebang Zhang
Summary: This study investigates the high-temperature deformation and decomposition mechanisms of the alpha(2) phase in a beta-solidified TiAl alloy. The results show that beta(o) and omega(o) phases precipitate within the equiaxed alpha(2) phase at 800 degrees C, indicating the alpha(2) -> beta(o) -> omega(o) transformation. Additionally, gamma phase precipitates form within the beta(o) matrix, and the alpha(2) lamellae decompose into ultrafine (alpha(2) + gamma) lamellae and coarsened gamma lamellae through alpha(2) -> alpha(2) + gamma and alpha(2) -> gamma transformations, respectively. Furthermore, the omega(o) phase nucleates within the ultrafine lamellae via alpha(2) -> omega(o) transformation. However, at 1000 degrees C, the nucleation of beta(o) particles is sluggish due to the efficient release of internal stress via dynamic recrystallization (DRX). These findings suggest that the decomposition of the alpha(2) phase can introduce complex phase transformations in TiAl alloys with a high amount of beta-stabilizing elements.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Min Zhang, Yingwei Yan, Renci Liu, Yulin Gao, Yanhua Sun, Zhunli Tan
Summary: A study was conducted on a long ribbon with blocky borides at both ends, consisting of 4 boride structures and a B2 layer. It was found that the blocky boride is Ti3B4 with a D7(b) structure. Mn was discovered to segregate to B2/borides interfaces inside the ribbon, while Nb is rich in borides but poor in the B2 phase.
Article
Materials Science, Multidisciplinary
Yoon-Oh Jung, Min-Sik Kim, Jisung Park, Guang Yang, Dong Won Lee, Seong-Woong Kim
Summary: An improved step heat treatment method was developed to refine the microstructure of a cast TiAl alloy without hot working. The phase transformation behavior was identified and the heat treatment temperature and process were determined through a pseudo-phase diagram. The as-cast structure was eliminated through homogenization heat treatment before the heat treatment of each phase in the (alpha + gamma) region. Nucleation mainly occurred at the grain boundaries and the lamellar structure thickened during the (alpha + gamma) heat treatment. The step heat treatment effectively controlled the microstructure and improved the mechanical properties of the cast TiAl alloy at high temperatures.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Dhananjay Dubey, Kondababu Kadali, Harikrishna Kancharla, Anuz Zindal, Jayant Jain, K. Mondal, Sudhanshu S. Singh
Summary: The study found that using different aging temperatures affects the distribution and volume fraction of Mg17Al12 precipitates in AZ80 magnesium alloy, as well as the corrosion behavior of the alloy. Lower aging temperature results in higher corrosion resistance, which is correlated with the number density of Mg17Al12 precipitates.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Lin Song, Fritz Appel, Andreas Stark, Uwe Lorenz, Junyang He, Zhanbing He, Junpin Lin, Tiebang Zhang, Florian Pyczak
Summary: The study focused on the transformations between the phases alpha and omega in a lamellar multiphase titanium aluminide alloy based on gamma, showing that the reverse transformation omega to alpha can also occur during high-temperature deformation. The combined operation of mechanical twinning and reversible transformation reduces the mechanical anisotropy of the former alpha lamellae. Advanced characterization techniques like HRTEM and APT were applied to study processes occurring at the nano-meter and sub nano-meter scale.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
G. B. Mazzei, M. G. Burke, D. A. Horner, F. Scenini
Summary: Pb-Caustic Stress Corrosion Cracking initiation was studied on Alloy 690TT at 315 degrees C. The cracking mainly initiated intergranularly following the oxidation of Cr-rich grain boundary carbides. The as-received surfaces showed higher resistance to crack nucleation compared to polished ones due to the absence of carbide decoration on the grain boundaries in the ultrafine-grained near-surface layer. Dislocation entanglements on the cold-worked surface attenuated the emission of dislocations at the surface. Subsequent cracking was caused by Pb incorporation in the oxide, weakening the passive layer and enhancing slip dissolution.
Article
Materials Science, Multidisciplinary
Alok Singh, Takanobu Hiroto, Hiroyuki Watanabe, Naoko Ikeo, Toshiji Mukai, Koichi Tsuchiya
Summary: Addition of Al to equiatomic high entropy alloy promotes formation of BCC phase and sigma phase. Straining by caliber rolling induces morphological changes related to planar faults, where sigma phase nucleates first on the matrix faults followed by formation of B2 phase driven by elemental concentration changes. This study provides insights into the formation mechanisms of different phases in the alloy.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
A. Semenyuk, M. Klimova, D. Shaysultanov, G. Salishchev, S. Zherebtsov, N. Stepanov
Summary: The addition of nitrogen to a CoCrFeMnNi high-entropy alloy improves its structure and mechanical properties, enhancing strength and ductility. Subsequent annealing can further optimize the material's performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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)