Article
Materials Science, Multidisciplinary
Solomon-Oshioke Agbedor, Hong Wu, Yaojia Ren, Jingbo Liu, Luxin Liang, Qingge Wang, Ian Baker
Summary: In this study, MPEAs with a combination of BCC and FCC phases were prepared using composition optimization, mechanical alloying, and powder sintering. The phase evolution and composition were investigated, and it was found that the addition of Ti could enhance the mechanical properties of the alloys.
MATERIALS CHARACTERIZATION
(2023)
Article
Chemistry, Physical
Chenzeng Zhang, Cunguang Chen, Pei Li, Mengjie Yan, Qian Qin, Fang Yang, Wenwen Wang, Zhimeng Guo, Alex A. Volinsky
Summary: Powder metallurgy Cu-30Fe alloy was prepared using mechanical alloying, pressureless sintering, and rolling processes. The rolling process affected the alloy microstructure and physical properties. The Fe particles became elongated and changed shape, while the Cu grains became elongated and refined. The coordinated deformation of the Cu and Fe phases resulted in finer Cu grains near the Fe particles. After annealing, the cold-rolled Cu-30Fe alloy achieved a good combination of mechanical and functional properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
M. R. Akbarpour, S. Alipour, M. Najafi, T. Ebadzadeh, H. S. Kim
Summary: This study investigated the rapid synthesis of nanostructured NiTi-Ni3Ti intermetallic alloy from titanium and nickel powders through mechanical alloying followed by microwave-assisted sintering process. The research found that the sintering temperature had a significant impact on the density, porosity, and microhardness of the samples, with the highest density and microhardness achieved at a sintering temperature of 1100 degrees C. The results suggest that microwave-assisted sintering can be utilized to fabricate Ni-Ti alloys with improved mechanical properties for biomedical applications.
Article
Chemistry, Physical
Marek Krasnowski, Stanislaw Gierlotka, Dariusz Zasada
Summary: The paper describes a composite material with a matrix containing a nanocrystalline intermetallic phase Al13Fe4 and microcrystalline aluminium. The material was synthesized at a high temperature and pressure, and a phase transformation of the nanocrystalline phase was observed. The resulting composite material has high hardness and compressive strength, while also exhibiting some plasticity.
Article
Materials Science, Multidisciplinary
Halit Subutay, Ilyas Savkliyildiz
Summary: 9 wt% Sn reinforced Mg alloys are produced by high energy ball milling and conventional sintering method. The effect of ball milling time on particle and grain morphology is examined. Platelet structure and solid solution mechanism are observed during the ball milling process. The highest density, hardness, and elastic modulus values are achieved with 8 hours of ball milling.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Yuehuang Xie, Zhen Zhang, Yifei Luo, Jun Wang, Jiamiao Liang, Deliang Zhang
Summary: High strength ultrafine grained CoCrFeNiMn high entropy alloys containing TiO(C) nanoparticles were fabricated. The results showed that grain refinement led to a decrease in yield strength but a significant increase in fracture elongation. Introducing intragranular Ni-Ti nanoparticles can maintain high yield strength and enhance fracture elongation.
Article
Materials Science, Multidisciplinary
P. Sai Karthik, S. Ganesh, P. S. Ninawe, M. Battabyal, S. B. Chandrasekhar, R. Vijay
Summary: This study investigates the fabrication of austenitic oxide dispersion strengthened (AODS) steel using Ni-20Cr instead of commonly used Ni in second-stage ball milling. The mechanical alloying process was studied by measuring the yield and average size of milled powder. The AODS powder was subsequently consolidated using hot extrusion and solution annealed. The results showed improved powder yield and comparable strength levels to reported values.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Physical
David Necas, Ivo Marek, Jan Pinc, Dalibor Vojtech, Jiri Kubasek
Summary: Zinc and its alloys are potential materials for biodegradable medical devices. This study investigated the effects of different mechanical alloying parameters on Zn-1Mg powder and the influence of preparation by mechanical alloying on Zn-6Mg and Zn-16Mg alloys. The sintered samples showed improved microstructures and mechanical properties, with the Zn-1Mg alloy exhibiting the best performance.
Article
Chemistry, Physical
Rodolfo da Silva Teixeira, Rebeca Vieira de Oliveira, Patricia Freitas Rodrigues, Joao Mascarenhas, Filipe Carlos Figueiredo Pereira Neves, Andersan dos Santos Paula
Summary: The present study compares the differences between microwave and conventional sintering processes for the manufacture of NiTi porous specimens. Both sintering processes result in porous materials suitable for biomedical applications, but the conventionally sintered samples have higher elastic work values.
Article
Materials Science, Multidisciplinary
Sunil Kumar Rajulapati, S. D. Gaikwad, Vikram. V. Dabhade, Ujjwal Prakash
Summary: This study investigates the feasibility of using the powder forging route for the consolidation of oxide dispersion strengthened steel. The results show that the powder forging process eliminates the prior particle boundaries network and achieves near isotropic mechanical properties and homogeneous chemical composition.
MATERIALS TODAY COMMUNICATIONS
(2023)
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
Harish Kumar Adigilli, Kolan Madhav Reddy, Yixuan Hu, Rajamallu Karre, P. V. V. Srinivas, K. Guruvidyathri, Anirudha Karati, V. S. Hariharan, P. Suresh Babu, A. K. Pandey, Joydip Joardar
Summary: Nanostructured two-dimensional WS2 reinforced Al-4Cu alloy matrix composites were prepared using spark plasma sintering, resulting in the formation of Al-W-Cu ternary phase at the grain boundaries and increased hardness in the composite material. High-resolution transmission electron microscopy and scanning TEM were utilized to confirm the structure and characteristics of the ternary phase, as well as the in situ formation mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Bo-ren Ke, Yu-chen Sun, Yong Zhang, Wen-rui Wang, Wei-min Wang, Pei-yan Ma, Wei Ji, Zheng-yi Fu
Summary: This paper introduces the methods of synthesizing HEA powders and consolidating HEA bulk. It summarizes the phase transformation, microstructural evolution, and mechanical properties of HEAs obtained by powder metallurgy. Additionally, HEA-related materials such as ceramic-HEA cermets and HEA-based composites fabricated by powder metallurgy are also discussed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Xingyu Li, Lin Zhang, Yanhao Dong, Mingli Qin, Zichen Wei, Zhongyou Que, Junjun Yang, Xuanhui Qu, Ju Li
Summary: Optimized pressureless two-step sintering successfully produced tungsten samples with high density and nanometer-sized grains, showing potential for transferring lessons to pressureless sintering of other refractory metals and alloys.
Article
Materials Science, Multidisciplinary
Shuhei Nogami, Akira Hasegawa, Makoto Fukuda, Michael Rieth, Jens Reiser, Gerald Pintsuk
Summary: This paper discusses the drawbacks of tungsten as a plasma facing material in fusion reactors and the efforts to improve its mechanical properties through collaborative research and development. Methods such as grain refining, K-doping, dispersion strengthening, and alloying with Re are explored to enhance the performance of tungsten materials. However, there are concerns regarding the intrinsic issues of materials alloyed with Re under high dose neutron irradiation.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Khaled AbouAitah, Anna Swiderska-Sroda, Ahmed Kandeil, Asmaa Salman, Jacek Wojnarowicz, Mohamed A. Ali, Agnieszka Opalinska, Stanislaw Gierlotka, Tomasz Ciach, Witold Lojkowski
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2020)
Article
Multidisciplinary Sciences
W. Dmowski, G. H. Yoo, S. Gierlotka, H. Wang, Y. Yokoyama, E. S. Park, S. Stelmakh, T. Egami
SCIENTIFIC REPORTS
(2020)
Article
Engineering, Chemical
A. Antolak-Dudka, D. Oleszak, R. Zielinski, T. Kulik
Summary: The aim of this study was to manufacture tungsten composites from different initial powder mixtures by mechanical alloying followed by sintering. The results showed the formation of tungsten-based solid solution during milling, and new carbide phases appeared after consolidation. The microstructure of the sintered bodies was found to be non-homogeneous, with regions rich in different elements.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Svitlana Stelmakh, Kazimierz Skrobas, Stanislaw Gierlotka, Sven C. Vogel, Bogdan Palosz
Summary: Real space pair-distribution function (PDF) analysis combined with molecular dynamics (MD) simulations was used to characterize the structure, shape, and surface structure of diamond nanoparticles annealed in air up to 880 degrees C. The study found that nanodiamond grains are terminated by (100), (110), and (111) crystallographic faces, with changes in grain shape and size occurring due to surface etching at higher annealing temperatures. The smallest grains disappear entirely at higher temperatures, while the average grain size increases.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Materials Science, Ceramics
Mariusz Drygas, Katarzyna Kapusta, Jerzy F. Janik, Miroslaw M. Bucko, Stanislaw Gierlotka, Svitlana Stelmakh, Bogdan Palosz, Zbigniew Olejniczak
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2020)
Article
Materials Science, Ceramics
Aleksandra Kedzierska-Sar, Pawel Falkowski, Julita Smalc-Koziorowska, Stanislaw Gierlotka, Mikolaj Szafran
Summary: Al2O3-W nanocomposites prepared by gelcasting exhibit highly homogeneous distribution of nano-tungsten particles, leading to improved mechanical properties in terms of hardness and fracture toughness compared to pure aluminum oxide.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Mariusz Drygas, Katarzyna Lejda, Jerzy F. Janik, Bogdan Musielak, Stanislaw Gierlotka, Svitlana Stelmakh, Bogdan Palosz
Summary: A study was conducted on the preparation and sintering process of individual and in situ mixed composite nanocrystalline powders of TiN-AlN system, showing that high pressure and high temperature sintering can produce robust nanoceramics with high hardness. Characterization of the powders and nanoceramics revealed the potential for equilibration towards bimetallic compounds and the absence of metastable alloying under the applied synthesis and sintering conditions.
Article
Chemistry, Physical
E. Kusiak-Nejman, J. Wojnarowicz, A. W. Morawski, U. Narkiewicz, K. Sobczak, S. Gierlotka, W. Lojkowski
Summary: The size of ZnO nanoparticles plays a significant role in the photocatalytic degradation of phenol under UV and visible light radiation. Nanoparticles with an average size of 71 nm showed the highest reaction rate for phenol degradation.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Svitlana Stelmakh, Kazimierz Skrobas, Stanislaw Gierlotka, Bogdan Palosz
Summary: The study revealed that oxidation of detonation nanodiamonds leads to etching of (110) grain surfaces, with the shape evolving from truncated cube-octahedrons to dodecahedrons terminated by (110) surfaces.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Physics, Condensed Matter
Svitlana Stelmakh, Kazimierz Skrobas, Stanislaw Gierlotka, Bogdan Palosz
Summary: The atomic structure of plate-shaped nanodiamonds synthesized from chloroadamantane was identified using large-Q powder diffraction data. Experimental data analysis and molecular dynamics simulations were used to obtain theoretical atomistic models of nanodiamonds. It was found that these nanodiamonds are plates built from six hexagonal carbon layers and terminated by (111)B surfaces with three dangling bonds.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Chemistry, Physical
Katarzyna Konopka, Marek Krasnowski, Justyna Zygmuntowicz, Konrad Cymerman, Marcin Wachowski, Paulina Piotrkiewicz
Summary: The study successfully produced Al2O3 samples and NiAl-Al2O3 composite materials using the PPS technique, showing promising results with good relative densities, high hardness, and high plasticity.
Article
Chemistry, Physical
Katarzyna Konopka, Justyna Zygmuntowicz, Marek Krasnowski, Konrad Cymerman, Marcin Wachowski, Paulina Piotrkiewicz
Summary: This study presents the fabrication of NiAl-Al2O3 composites using mechanical alloying and pulse plasma sintering. The innovative concept of this work is the use of nanometric alumina powder as reinforcement for a synthetized intermetallic matrix. The study successfully consolidated the composite powders using the Pulse Plasma Sintering (PPS) method and obtained composites with high hardness values. The use of low sintering temperatures is crucial for the production of fully dense, ultrafine-grained composites with high hardness.
Article
Chemistry, Physical
Justyna Zygmuntowicz, Katarzyna Konopka, Marek Krasnowski, Paulina Piotrkiewicz, Jan Bolek, Marcin Wachowski, Radoslaw Zurowski, Mikolaj Szafran
Summary: This study aimed to fabricate Al2O3 matrix composites using NiAl-Al2O3 composite powder by slip casting method. The results showed that the phase composition of the composites changed after sintering, with the formation of Ni and NiAl2O4 phases, while retaining some fine Al2O3 particles from the initial composite powder.
Article
Chemistry, Physical
Marek Krasnowski, Stanislaw Gierlotka, Dariusz Zasada
Summary: The paper describes a composite material with a matrix containing a nanocrystalline intermetallic phase Al13Fe4 and microcrystalline aluminium. The material was synthesized at a high temperature and pressure, and a phase transformation of the nanocrystalline phase was observed. The resulting composite material has high hardness and compressive strength, while also exhibiting some plasticity.
Article
Chemistry, Physical
Kazimierz Skrobas, Kamila Stefanska-Skrobas, Svitlana Stelmakh, Stanislaw Gierlotka, Bogdan Palosz
Summary: The study revealed that the surface free energy of diamond nanocrystals is influenced by particle size, and using the NAC method can avoid ambiguities in surface area calculations. Both Tersoff and AIREBO potentials show significant changes in surface free energy with decreasing crystal size, but in opposite directions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
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.