Article
Chemistry, Physical
F. Vogel, S. Ngai, X. Y. Zhou, E. Zaiser, A. M. Manzoni, Y. Wu, W. W. Zheng, P. Zhang, G. B. Thompson
Summary: The study investigates the hierarchical phase separation behavior and microstructural evolution of a single crystal Fe79.5Si15.5V5.0 alloy using transmission electron microscopy (TEM) and atom probe tomography (APT). A complex maze-like microstructure is formed, and the supersaturation in precipitates with Fe and V drives the formation of plates. The study also explores the potential for improving the properties of high-temperature structural materials through the stabilization of hierarchical microstructures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Wenkai Le, Wenwen Sheng, Runtao Liu, Minhui Yuan, Wenwei Yang, Jingyi Lv, Li Yin, Chen Chen, Xinyu Wang, Zongwei Zhang, Kejia Liu, Tianchi Wang, Qian Zhang, Jing Shuai
Summary: In this study, Eu0.5Ca0.5Zn2-xMgxSb2 compounds were prepared using ball milling and spark plasma sintering methods. The results show that the thermoelectric performance of Eu0.5Ca0.5Zn2Sb2 was significantly improved through the ball milling and hot-pressing preparation process, and Mg substitution further increased its thermoelectric performance by regulating the thermal conductivity. The obtained high thermoelectric performance in this work provides a reference for improving the properties of other CaAl2Si2 structure Zintl thermoelectric materials.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Physical
Farah M. El-Makaty, K. Andre Mkhoyan, Khaled M. Youssef
Summary: This study investigated the effects of graphene's structural integrity on the thermoelectric properties of n type bismuth telluride alloy. The addition of graphene during the last phase of mechanical milling was found to enhance electrical conductivity and Seebeck coefficient. Additionally, an improvement in the figure-of-merit was observed when 0.05 wt% graphene was added in the last 10 mins of milling.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Daniel Rabin, Aviv Meshulam, David Fuks, Yaniv Gelbstein
Summary: This study investigates the effect of adding Al and Sc in Half-Heusler high entropy alloy, showing a 40% improvement in thermoelectric figure of merit compared to the alloy without Al and Sc. The thermodynamic stability of the compound was examined using HEA methodology and ab-initio density functional theory calculations.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Oriol Rius-Ayra, Alisiya Biserova-Tahchieva, Isabel Lopez-Jimenez, Nuria Llorca-Isern
Summary: The study combined high-energy ball milling and liquid phase deposition to obtain a superhydrophobic CuFeCo powder alloy for removing high-density polyethylene fibers from water. The CuFeCo powder was functionalized to exhibit superhydrophobic and superoleophilic properties. This innovative use of superhydrophobic materials in capturing microplastics demonstrates their potential in environmental applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Physical
Chunchun Song, Haitao Zhou, Yan Gu, Lin Pan, Changchun Chen, Yifeng Wang
Summary: This work investigates the thermoelectric properties of Bi2O2Se with Bi2Te2.7Se0.3 addition, which improves the electrical conductivity and power factor while suppressing the lattice thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Fengkai Guo, Yuxin Sun, Haixu Qin, Yuke Zhu, Zihang Liu, Zhenhua Ge, Wei Cai, Jiehe Sui
Summary: By adjusting the Bi/Sb ratio, researchers have successfully developed a mechanically robust p-type Bi2Te3-based alloy with excellent performance at high temperatures. By using this alloy and other materials, they have fabricated a thermoelectric module with high conversion efficiency, paving a way for the development of robust miniature thermoelectric devices.
SCRIPTA MATERIALIA
(2022)
Article
Physics, Condensed Matter
Arun Raphel, Appu Kumar Singh, P. Vivekanandhan, S. Kumaran
Summary: The study successfully synthesized a high-density nanocrystalline lead-tin-selenium-tellurium high-entropy alloy, achieving excellent thermoelectric performance by reducing lattice thermal conductivity.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Chemistry, Physical
Anirudha Karati, Soumya Ranjan Mishra, Sanyukta Ghosh, Ramesh Chandra Mallik, Rajashekhara Shabadi, R. V. Ramanujan, Satyesh Kumar Yadav, B. S. Murty, U. V. Varadaraju
Summary: A new type of high entropy alloy Ti2NiCoSnSb with half-Heusler structure has been synthesized for the first time. It was found that the desired single-phase HH material can be obtained through dry milling, which exhibited simultaneous enhancement in the Seebeck coefficient and electrical conductivity. Moreover, the band structure calculated by density functional theory was in good agreement with the experimental results, and phase separation strongly influenced the thermoelectric properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Materials Science, Multidisciplinary
R. Basu, A. Singh
Summary: Silicon-Germanium is a proven alloy with wide applications in technology, but faces challenges. Solid-state synthesis overcomes homogeneity issues with high yield and environmental friendliness. Strategies to reduce thermal conductivity and explore new methods are crucial for improving performance metrics.
MATERIALS TODAY PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Doina Raducanu, Vasile Danut Cojocaru, Anna Nocivin, Radu Hendea, Steliana Ivanescu, Doina Stanciu, Corneliu Trisca-Rusu, Silviu Iulian Drob, Elisabeta Mirela Cojocaru
Summary: The present paper applies the mechanical alloying process to obtain a new biodegradable Mg-based alloy powder with high biomechanical and biochemical performance from the system Mg-xZn-Zr-Ca. Various processing parameters have been experimented to establish an efficient processing route for small biodegradable parts in the medical domain. The composition of the powders influences the size and shape, while the highest milling speed and time result in finer, round-shaped powder particles without pores or inclusions. The powder sample with 10 wt.%Zn exhibits the most uniform size. The powders are further processed by selective laser melting to obtain a homogeneous experimental sample for future trials.
Article
Chemistry, Physical
Serhii Teslia, Anatoliy Stepanchuk
Summary: In this study, Al-15 wt % Fe powders were prepared using two methods and the effects of milling time and temperature field distribution during atomization on the morphology and microstructure were investigated. It was found that centrifugal atomization resulted in a microstructure with reinforcing effects, consisting of alpha-Al-matrix, stable Al13Fe4, and randomly oriented short fibres of metastable Al6Fe.
Article
Chemistry, Physical
Florin Popa, Victor Cebotari, Traian Florin Marinca, Olivier Isnard, Ionel Chicinas
Summary: Ni51Mn34Sn15 Heusler alloy was synthesized by high energy planetary ball mill under argon atmosphere for up to 10 hours of milling. X-ray diffraction and Rietveld method were used to investigate the alloy formation and determine the phase composition. Mechanosynthesis resulted in the formation of B2 disordered structure after 8 hours of milling, accompanied by high lattice strains. Scanning electron microscopy showed the evolution of powder morphology during the milling process. Energy dispersive X-ray spectroscopy was used to analyze the homogenization and distribution of elemental powders with milling time. The decrease of magnetization with alloy formation was observed, attributed to the formation of disordered phase. Low temperature annealing and short annealing time were found to improve the ordering of the alloy to L21 structure and enhance the magnetic properties to a level comparable to the arcmelted sample. The Curie temperature was affected by iron contamination during milling, and an ordering temperature of 60 degrees Celsius was measured for the L21 phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Zhifang Zhou, Rui Liu, Yueyang Yang, Yunpeng Zheng, Bin Wei, Wenyu Zhang, Mingchu Zou, Jian Han, Yiqian Liu, Jinle Lan, Ce-Wen Nan, Yuan-Hua Lin
Summary: In this study, a fast preparation method combining mechanical alloying and spark plasma sintering was successfully adopted to synthesize CuI-doped Bi2O2Se, which greatly improved its electrical conductivity and thermal conductivity, leading to a 380% enhancement in thermoelectric performance.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Qianqian Cheng, Jialin Chen, Gewen Yi, Yu Shan, Yushan Geng, Juyang Wang, Wenzhen Wang
Summary: Mechanical alloying with high-energy ball milling is used to prepare high-entropy alloy (HEA) matrix nanocomposite powders with tungsten carbide (WC) particles. The repeated plastic deformation, fracture, and cold welding of the HEA powder result in the transformation from a body-centered cubic (BCC) phase to a face-centered cubic (FCC) phase and the gradual dispersion of WC microfine powder in the HEA matrix. The final product is a biphasic HEA-matrix WC nanocomposite spherical powder.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
J. Vivas, C. Capdevila, E. Altstadt, M. Houska, M. Serrano, D. De-Castro, D. San-Martin
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2018)
Article
Nanoscience & Nanotechnology
J. Vivas, C. Capdevila, E. Altstadt, M. Houska, D. San-Martin
SCRIPTA MATERIALIA
(2018)
Article
Materials Science, Multidisciplinary
Rosalia Rementeria, Carlos Capdevila, Ricardo Dominguez-Reyes, Jonathan D. Poplawsky, Wei Guo, Esteban Urones-Garrote, Carlos Garcia-Mateo, Francisca G. Caballero
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Javier Vivas, Carlos Capdevila, Eberhard Altstadt, Mario Houska, Ilchat Sabirov, David San-Martin
METALS AND MATERIALS INTERNATIONAL
(2019)
Article
Materials Science, Multidisciplinary
D. De Castro, J. Vivas, R. Rementeria, M. M. Aranda, J. A. Jimenez, C. Capdevila
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Materials Science, Multidisciplinary
J. Chao, M. M. Aranda, R. Rementeria, M. Serrano, C. Capdevila
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2019)
Article
Nanoscience & Nanotechnology
J. Vivas, D. De-Castro, J. D. Poplawsky, D. San-Martin, C. Capdevila
SCRIPTA MATERIALIA
(2019)
Article
Materials Science, Multidisciplinary
D. De-Castro, R. Rementeria, J. Vivas, T. Sourmail, J. D. Poplawsky, E. Urones-Garrote, J. A. Jimenez, C. Capdevila, F. G. Caballero
MATERIALS CHARACTERIZATION
(2020)
Article
Multidisciplinary Sciences
Rosalia Rementeria, Ricardo Dominguez-Reyes, Carlos Capdevila, Carlos Garcia-Mateo, Francisca G. Caballero
SCIENTIFIC REPORTS
(2020)
Article
Materials Science, Multidisciplinary
Jesus Chao, Carlos Capdevila
Article
Materials Science, Multidisciplinary
Alexis Graux, Sophie Cazottes, David De Castro, David San-Martin, Carlos Capdevila, Jose Maria Cabrera, Silvia Molas, Sebastian Schreiber, Djordje Mirkovic, Frederic Danoix, Damien Fabregue, Michel Perez
Article
Materials Science, Multidisciplinary
Adriana Eres-Castellanos, Ana Santana, Luis Miguel Sanz-Moral, Rosalia Rementeria, Rebeca Hernandez Pascual, Marta Serrano, Isaac Toda-Caraballo, Jose A. Jimenez, Francisca G. Caballero, Carlos Capdevila
Summary: This study evaluated the effects of adding TiC nanoparticles on the microstructure and high temperature behavior of Grade 316 L stainless steel. The results showed that TiC nanoparticle inoculation did not alter the solidification structure and grain size, but it did modify the material's texture. Additionally, dispersion hardening improved the ductility, yield strength, and ultimate tensile strength of 316 L steel at high temperature.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Ana Santana, Adriana Eres-Castellanos, Jose Antonio Jimenez, Rosalia Rementeria, Carlos Capdevila, Francisca G. Caballero
Summary: In this study, laser powder bed fusion was used to process a high-performance maraging steel M300 with modified layer thickness and laser emission mode. The metallurgical phenomena during printing, including melting of deposited material, rapid solidification, and martensite-to-austenite reversion and intermetallic phase precipitation induced by heating and cooling cycles, were studied. Aging treatments were applied to the printed parts, and microstructural characterization showed the importance of layer thickness in modifying the solidification cell size. The study also found that the printing parameters had no significant effect on the microstructure evolution during aging, and the hardness of aged microstructures was comparable to that obtained by conventional manufacturing methods.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Alexis Graux, Sophie Cazottes, David De Castro, David San Martin, Carlos Capdevila, Jose Maria Cabrera, Silvia Molas, Sebastian Schreiber, Djordje Mirkovic, Frederic Danoix, Matthieu Bugnet, Damien Fabregue, Michel Perez
Proceedings Paper
Materials Science, Multidisciplinary
J. Vivas, R. Rementeria, M. Serrano, E. Altstadt, D. San Martin, C. Capdevila
THERMEC 2018: 10TH INTERNATIONAL CONFERENCE ON PROCESSING AND MANUFACTURING OF ADVANCED MATERIALS
(2018)
Article
Materials Science, Multidisciplinary
Y. Liu, K. Zweiacker, C. Liu, J. T. McKeown, J. M. K. Wiezorek
Summary: The evolution of rapid solidification microstructure and solidification interface velocity of hypereutectic Al-20at.%Cu alloy after laser melting has been studied experimentally. It was found that the formation of microstructure was dominated by eutectic, alpha-cell, and banded morphology grains, and the growth modes changed with increasing interface velocity.
Article
Materials Science, Multidisciplinary
Bharat Gwalani, Julian Escobar, Miao Song, Jonova Thomas, Joshua Silverstein, Andrew Chihpin Chuang, Dileep Singh, Michael P. Brady, Yukinori Yamamoto, Thomas R. Watkins, Arun Devaraj
Summary: Castable alumina forming austenitic alloys exhibit superior creep life and oxidation resistance at high temperatures. This study reveals the mechanism behind the enhanced creep performance of these alloys by suppressing primary carbide formation and offers a promising alloy design strategy for high-temperature applications.
Article
Materials Science, Multidisciplinary
Jian Song, Qi Zhang, Songsong Yao, Kunming Yang, Houyu Ma, Jiamiao Ni, Boan Zhong, Yue Liu, Jian Wang, Tongxiang Fan
Summary: Recent studies have shown that achieving an atomically flat surface for metals can greatly improve their oxidation resistance and enhance their electronic-optical applications. Researchers have explored the use of graphene as a covering layer to achieve atomically flat surfaces. They found that high-temperature deposited graphene on copper surfaces formed mono-atomic steps, while annealed copper and transferred graphene on copper interfaces formed multi-atomic steps.
Article
Materials Science, Multidisciplinary
Jennifer A. Glerum, Jon-Erik Mogonye, David C. Dunand
Summary: Elemental powders of Al, Ti, Sc, and Zr are blended and processed via laser powder-bed fusion to create binary and ternary alloys. The microstructural analysis and mechanical testing show that the addition of Ti results in the formation of primary precipitates, while the addition of Sc and Zr leads to the formation of fine grain bands. The Al-0.25Ti-0.25Zr alloy exhibits comparable strain rates to Al-0.5Zr at low stresses, but significantly higher strain rates at higher stresses during compressive creep testing. Finite element modeling suggests that the connectivity of coarse and fine grain regions is a critical factor affecting the creep resistance of the alloys.
Article
Materials Science, Multidisciplinary
P. Jannotti, B. C. Hornbuckle, J. T. Lloyd, N. Lorenzo, M. Aniska, T. L. Luckenbaugh, A. J. Roberts, A. Giri, K. A. Darling
Summary: This work characterizes the thermo-mechanical behavior of bulk nanocrystalline Cu-Ta alloys under extreme conditions. The experiments reveal that the alloys exhibit unique mechanical properties, behaving differently from conventional nanocrystalline Cu. They do not undergo grain coarsening during extrusion and exhibit behavior similar to coarse-grained Cu.
Article
Materials Science, Multidisciplinary
Yiqing Wei, Jingwei Li, Daliang Zhang, Bin Zhang, Zizhen Zhou, Guang Han, Guoyu Wang, Carmelo Prestipino, Pierric Lemoine, Emmanuel Guilmeau, Xu Lu, Xiaoyuan Zhou
Summary: This study proposes a new strategy to modify microstructure by phase regulation, which can simultaneously enhance carrier mobility and reduce lattice thermal conductivity. The addition of Cu in layered SnSe2 induces a phase transition that leads to increased grain size and reduced stacking fault density, resulting in improved carrier mobility and lower lattice thermal conductivity.
Article
Materials Science, Multidisciplinary
Jia Chen, Zhengyu Zhang, Eitan Hershkovitz, Jonathan Poplawsky, Raja Shekar Bhupal Dandu, Chang-Yu Hung, Wenbo Wang, Yi Yao, Lin Li, Hongliang Xin, Honggyu Kim, Wenjun Cai
Summary: In this study, the structural origin of the pH-dependent repassivation mechanisms in multi-principal element alloys (MPEA) was investigated using surface characterization and computational simulations. It was found that selective oxidation in acidic to neutral solutions leads to enhanced nickel enrichment on the surface, resulting in reduced repassivation capability and corrosion resistance.
Article
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Materials Science, Multidisciplinary
M. S. Szczerba, M. J. Szczerba
Summary: Inverse temperature dependences of the detwinning stress were observed in face-centered cubic deformation twins in Cu-8at.%Al alloy. The detwinning stress increased with temperature when the pi detwinning mode was involved, but decreased when the pi/3 mode was involved. The dual effect of temperature on the detwinning stress was due to the reduction of internal stresses pre-existing within the deformation twins. The complete reduction of internal stresses at about 530 degrees C led to the equivalence of the critical stresses of different detwinning modes and a decrease in the yield stress anisotropy of the twin/matrix structure.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Materials Science, Multidisciplinary
Matthew R. Barnett, Jun Wang, Sitarama R. Kada, Alban de Vaucorbeil, Andrew Stevenson, Marc Fivel, Peter A. Lynch
Summary: The elastic-plastic transition in magnesium alloy Mg-4.5Zn exhibits bursts of deformation, which are characterized by sudden changes in grain orientation. These bursts occur in a coordinated manner among nearby grains, with the highest burst rate observed at the onset of full plasticity. The most significant burst events are associated with twinning, supported by the observation of twinned structures using electron microscopy. The bursts are often preceded and followed by a stasis in peak movement, indicating a certain "birth size" for twins upon formation and subsequent growth at a later stage.
Article
Materials Science, Multidisciplinary
Vaidehi Menon, Sambit Das, Vikram Gavini, Liang Qi
Summary: Understanding solute segregation thermodynamics is crucial for investigating grain boundary properties. The spectral approach and thermodynamic integration methods can be used to predict solute segregation behavior at grain boundaries and compare with experimental observations, thus aiding in alloy design and performance control.
Article
Materials Science, Multidisciplinary
Feiyu Qin, Lei Hu, Yingcai Zhu, Yuki Sakai, Shogo Kawaguchi, Akihiko Machida, Tetsu Watanuki, Yue-Wen Fang, Jun Sun, Xiangdong Ding, Masaki Azuma
Summary: This study reports on the negative and zero thermal expansion properties of Cd2Re2O7 and Cd1.95Ni0.05Re2O7 materials, along with their ultra-low thermal conductivity. Through investigations of their structures and phonon calculations, the synergistic effect of local structure distortion and soft phonons is revealed as the key to achieving these distinctive properties.
Article
Materials Science, Multidisciplinary
Thomas Beerli, Christian C. Roth, Dirk Mohr
Summary: A novel testing system for miniature specimens is designed to characterize the plastic response of materials for which conventional full-size specimens cannot be extracted. The system has an automated operation process, which reduces the damage to specimens caused by manual handling and improves the stability of the test results. The experiments show that the miniature specimens extracted from stainless steel and aluminum have high reproducibility, and the results are consistent with those of conventional-sized specimens. A correction procedure is provided to consider the influence of surface roughness and heat-affected zone caused by wire EDM.
Article
Materials Science, Multidisciplinary
Rani Mary Joy, Paulius Pobedinskas, Nina Baule, Shengyuan Bai, Daen Jannis, Nicolas Gauquelin, Marie-Amandine Pinault-Thaury, Francois Jomard, Kamatchi Jothiramalingam Sankaran, Rozita Rouzbahani, Fernando Lloret, Derese Desta, Jan D'Haen, Johan Verbeeck, Michael Frank Becker, Ken Haenen
Summary: This study investigates the influence of film microstructure and composition on the Young's modulus and residual stress in nanocrystalline diamond thin films. The results provide insights into the mechanical properties and intrinsic stress sources of these films, and demonstrate the potential for producing high-quality nanocrystalline diamond films under certain conditions.