Article
Metallurgy & Metallurgical Engineering
P. Urban, R. Astacio, F. Ternero, L. Nahlik, J. Cintas
Summary: The present study successfully produced TixCu100-x amorphous alloys using high energy ball mill, and investigated their microstructure and phase transformation behavior through various characterization techniques.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Chemistry, Physical
Jiang Wu, Xuguang An, Jing Zhang, Shaofeng Lei, Yi Guo, Xiwei Xu, Weitang Yao, Qingyuan Wang, Qingquan Kong
Summary: Ti-24Nb-4Zr-3Mn alloys were prepared using mechanical alloying and spark plasma sintering. The study found that increasing the milling time reduces the particle size of the alloy powder, but increases the oxygen content. Among all the investigated alloys, Ti-24Nb-4Zr-3Mn alloy prepared by 20-hour milling showed excellent comprehensive mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
J. X. Hou, J. Y. Zhang, J. X. Zhang, J. H. Luan, Y. X. Wang, B. X. Cao, Y. L. Zhao, Z. B. Jiao, X. J. Liu, W. W. Song, P. K. Liaw, T. Yang
Summary: The precipitation morphologies, coarsening kinetics, elemental partitioning behaviors, grain structures, and tensile properties of L12-strengthened Ni39.9Co20Fe15Cr15Al6Ti4-xNbxB0.1 (x = 0 at.%, 2 at.%, and 4 at.%) high-entropy alloys were investigated. Substituting Ti with Nb resulted in a transition from spheroidal to cuboidal precipitates, increased coarsening kinetics, and phase decomposition at 800°C. Excessive Nb addition led to grain boundary precipitation and phase decomposition from L12 to lamellar-structured D019 phase. Partial substitution of Ti with Nb resulted in a chemically complex and thermally stable L12 phase, ensuring stable phase structure and clean grain boundaries, leading to excellent high-temperature mechanical properties at 700°C.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
C. Suryanarayana
Summary: Metallic glasses or amorphous solids undergo mechanical crystallization, either ex situ or in situ, through mechanical deformation or continued milling. This article reviews the current literature on mechanical crystallization, focusing on in situ processes, and explores the potential of this interesting route for producing alloys with amorphous, crystalline, or mixed phases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Peng Du, Bin Zhu, Xinxin Yang, Guoqiang Xie
Summary: Ti-Fe-Si amorphous alloy powder was developed for the first time using mechanical alloying, laying the foundation for bulk preparation, while also investigating key factors affecting the amorphous transition of samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Albert Carrillo, Joan Saurina, Lluisa Escoda, Joan-Josep Sunol
Summary: Two different types of milling devices have different effects on the microstructural evolution of Fe-X-B-Cu alloys, with the shaker mill being more energetic than the planetary mill.
Article
Chemistry, Physical
Fei Wang, Suotao Wang, Bohan Chen, Wei Ma, Qin Jing, Xinyu Zhang, Mingzhen Ma, Qingfeng Wang, Riping Liu
Summary: The addition of Ti in low-density Fe30Mn-10Al-1.57C-2.3Cr-0.3Si alloys can optimize mechanical properties by reducing the original carbide phases and introducing TiC, refining the grain size of austenite phase, and achieving higher strength. Among the investigated alloys, the one with 0.6 wt% Ti concentration demonstrates the best mechanical properties, with a yield strength of 1031.75 MPa, an ultimate tensile strength of 1158.55 MPa, and a total elongation of 23.96%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Liu Junwei, Li Yong, Lu Shiqiang, Wan Jun, Gao Wenliang
Summary: The crystallization mechanism of Ti44Ni47Nb9 amorphous alloy was studied through mechanical alloying, indicating that the best crystallization effect was achieved at 575 degrees C for 30 minutes. The glass transition temperature, initial crystallization temperature, and peak crystallization temperature all increased with heating rate, showing kinetic effects. The apparent activation energies for different crystallization stages were calculated using the Ozawa equation.
Article
Chemistry, Physical
Malihe Zeraati, Mohammad Hossein Khazaei Feizabad, Gholam Reza Khayati
Summary: This study investigated the effect of mechanical alloying on the formation of CuCrFeTiNi high entropy alloys (HEA) at different times. The results showed that milling for 60 hours produced a HEA with a refined microstructure and a solid solution. The as-milled sample exhibited FCC and BCC phases in a ratio of 91% FCC and 8% BCC, while the bulk sample showed a different ratio of 21% FCC and 79% BCC. The as-milled sample had lower saturation magnetization and coercivity compared to the as-sintered sample, indicating that the produced alloy is a good soft magnetic material. The bulk sample also exhibited high Vickers hardness, compressive strength, and yield stress.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Kan Chen, Ruizhi Zhang, Jan-Willem G. Bos, Michael J. Reece
Summary: The successful synthesis of a single-phase high-entropy half-Heusler compound through mechanical alloying and spark plasma sintering allows for a homogeneous distribution of multiple elements in the samples. The stability of the samples, as well as the ability to exhibit both n-type and p-type semiconductor behavior by adjusting the Fe/Co ratio, indicate the promising potential of the high-entropy concept in extending composition range and tuning thermoelectric properties for half-Heusler materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Grzegorz Adamek, Mikolaj Kozlowski, Adam Junka, Piotr Siwak, Jaroslaw Jakubowicz
Summary: The paper presents the preparation process and properties study of bulk and porous Ti-Ta-Ag alloys. The authors found that Ta and Ag have significant influence on the microstructure and other biomaterial-related properties, and the new materials demonstrate good biocompatibility and antibacterial behavior. These materials could be applied in the production of hard tissue implants.
Article
Chemistry, Physical
L. Bolzoni, J. Hu, F. Yang, M. Zhang, J. Li, Z. Lu
Summary: The aim of this study was to investigate the kinetics of oxidation in Fe-bearing titanium alloys and to explore the mechanism of oxidation. The results revealed that the oxidation process was mainly controlled by the diffusion of oxygen and titanium. The formation of a non-uniform oxidation layer was observed, which is significant for understanding the oxidation behavior of Fe-bearing titanium alloys and predicting the degree of oxidation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Edyta Matyja, Krystian Prusik, Maciej Zubko, Pawel Swiec, Grzegorz Dercz, Jan Loskot
Summary: The crystallization kinetics and structure evolution during annealing of Ni45.5Co4.5Mn36.6In13.4 powders produced by mechanical alloying were investigated. After 70 h and 100 h of mechanical alloying, the powder consisted of a mixture of amorphous and nanocrystalline body-centered cubic (bcc) phases. Annealing above 440°C resulted in phase transformations and precipitation of different phases.
Article
Materials Science, Multidisciplinary
Mustafa Okumus, Feyzullah Kaya
Summary: In this study, AlCoCuNiTi high entropy alloy was synthesized through high-energy ball-milling and sintering methods. The microstructural, thermal, and microhardness properties were investigated. The results showed the formation of intermetallic and solid solution phases, a decrease in crystallite size, an increase in lattice strain and dislocation density with prolonged milling time. As the milling time increased, the particle size decreased, leading to a more homogeneous structure. The addition of Ti and the increase in milling time and sintering temperature contributed to an increase in microhardness.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jian Wu, Xiaoyan Liu, Heguo Zhu
Summary: Investigated the effects of aluminum doping on the mechanical and wear properties of medium-entropy alloy AlxNi0.6CoFe1.4. Found that aluminum addition can enhance the mechanical properties and wear resistance, with the Al0.2 alloy exhibiting the best overall performance.
MATERIALS CHARACTERIZATION
(2023)
Article
Nanoscience & Nanotechnology
Sara Mohammadzehi, Hamed Mirzadeh, Mohammad Javad Sohrabi, Milad Roostaei, Reza Mahmudi
Summary: The study examined the evolution of mechanical properties in an AISI 316L austenitic stainless steel during cold rolling using unidirectional and cross-rolling routes. It was found that cross-rolling with a low thickness reduction of 25% resulted in the formation of higher amounts of strain-induced martensite and dislocation density, leading to a strong combination of transformation strengthening and work hardening effects. At a high thickness reduction of 75%, both rolling routes showed comparable strengthening effects, but cross-rolling exhibited less pronounced directionality of mechanical properties. The study proposed an alternative method for evaluating anisotropy in cold rolled sheets and demonstrated the potential of cross-rolling in enhancing mechanical properties, preserving equiaxed structure, and reducing anisotropy and directionality compared to unidirectional rolling.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Milad Maleki, Fatemeh Jamei, Massoud Emamy, Hamed Mirzadeh
Summary: The effects of nickel addition to magnesium in the hypoeutectic range were examined in the as-cast and extruded conditions. The results showed that at low nickel content (5 wt-%), grain-boundary eutectics were present in the refined alpha-Mg matrix, while at high nickel content (15 wt-%), the eutectic constituent became the matrix of the alloy with the appearance of alpha-Mg rosettes. The addition of nickel up to 15 wt-% significantly improved the strength-ductility balance. Moreover, the formation of long Mg2Ni particles at the boundaries of eutectic colonies was explained based on the cooling curve thermal analysis results. Additionally, the remarkable grain refinement through dynamic recrystallisation (DRX) and fragmentation/dispersion of intermetallic particles during hot extrusion resulted in improved tensile strength, ductility, and toughness.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Civil
Mohammad Javad Sohrabi, Hamed Mirzadeh, Saeed Sadeghpour, Abdol Reza Geranmayeh, Reza Mahmudi
Summary: The sequential TWIP and TRIP effects were induced in a commercial AISI 304L stainless steel by tailoring the average austenite grain size. Grains refinement promoted the TWIP effect, while grain coarsening enhanced the TRIP effect.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Zeinab Savaedi, Reza Motallebi, Hamed Mirzadeh, Rouhollah Mehdinavaz Aghdam, Reza Mahmudi
Summary: This overview article reviews the superplastic behavior of medical magnesium alloys. It discusses the basics of superplasticity and superplastic forming via grain boundary sliding (GBS). The properties of biomedical Mg alloys are tabulated. The critical discussion focuses on the superplasticity of biocompatible Mg-Al, Mg-Zn, Mg-Li, and Mg-RE alloys, emphasizing the influence of grain size, hot deformation temperature, and strain rate on tensile ductility.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2023)
Review
Materials Science, Multidisciplinary
Hamed Mirzadeh
Summary: This monograph provides an overview of friction stir processing (FSP) of surface metal-matrix composites (MMCs) using AZ91 magnesium alloy, summarizing the results related to various reinforcing particles and explaining the AZ91 composite fabricating methods based on FSP. The effects of introducing second-phase particles and FSP process parameters on the microstructural modification, mechanical properties, wear/tribological behavior, and corrosion resistance are discussed. Furthermore, suggestions for future work, such as focusing on superplasticity, metal additive manufacturing processes, and common reinforcing phases, are proposed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Review
Materials Science, Multidisciplinary
Mohammad Saleh Geshani, Parastoo Mahmoud Kalayeh, Amir Hossein Asadi, Hamed Mirzadeh, Mehdi Malekan, Massoud Emamy
Summary: Due to their excellent mechanical properties, magnesium alloys with long-period stacking ordered (LPSO) structures have gained significant attention. This overview article reviews the atomic structures, formation mechanisms, transformations, and morphology of LPSO phases in various Mg-based systems, as well as the effects of thermomechanical processing and severe plastic deformation techniques on the grain refinement and dispersion of LPSO phases. Furthermore, the application of friction stir processing and friction stir welding for LPSO-containing Mg alloys in terms of microstructural evolution, mechanical properties, and strengthening mechanisms is critically discussed. Future suggestions include studying the kinetics of LPSO phase formation, exploring emerging processing technologies, evaluating processing parameters, characterizing recrystallization mechanisms, and investigating superplasticity during hot deformation of LPSO-containing Mg alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Amir Hossein Asadi, Parastoo Mahmoud Kalayeh, Hamed Mirzadeh, Mehdi Malekan, Massoud Emamy
Summary: In this study, the microstructures, mechanical properties during tensile deformation, and precipitation kinetics of Mg95.5Y3Zn1.5 and Mg95.5Y3Ni1.5 magnesium alloys were compared. The investigation revealed that the peak aging treatment led to the formation of lamellar 14H-LPSO phase in Mg95.5Y3Zn1.5 alloy and bMODIFIER LETTER PRIME-Mg7Y particles in Mg95.5Y3Ni1.5 alloy, resulting in improved ultimate tensile strength and total elongation. The analysis of formation kinetics indicated that the activation energy for phase transformation was different for the two alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Sajad Ghaemifar, Hamed Mirzadeh
Summary: The dissolution kinetics of the undesirable Laves phase in Inconel 718 was investigated through homogenization heat treatment. The activation energy and kinetic characteristics of Laves phase dissolution were determined, and the diffusion of Nb in Ni was identified as the key mechanism.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Civil
Mohammad Javad Sohrabi, Hamed Mirzadeh, Milad Roostaei, Oliver Renk, Abdol Reza Geranmayeh, Reza Mahmudi
Summary: The effects of cold rolling, subsequent continuous heating, and aging on the microstructure and tensile properties of AISI 904L superaustenitic stainless steel were studied. Cold rolling led to high strength but reduced ductility in subsequent tensile testing. Recrystallization and fine grain size were observed upon continuous heating, accompanied by the precipitation of fine Cr-Mo-rich sigma-phase. Grain refinement during thermomechanical processing significantly improved the yield stress, but deviations from the Hall-Petch relation were observed due to the precipitation of intragranular sigma-phase, affecting the elongation to failure.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Mohammad Reza Zamani, Milad Roostaei, Hamed Mirzadeh, Mehdi Malekan, Min Song
Summary: This study investigates the relationship between the parameters of cold rolling and annealing process, interstitial element content, and their interactions in the processing and grain refinement of interstitial-containing high-entropy alloys (HEAs). Machine learning models and mathematical relationships are proposed to guide the design and prediction of the microstructure and properties of HEAs.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Milad Maleki, Susanne Berndorf, Sara Mohammadzehi, Hamed Mirzadeh, Massoud Emamy, Madlen Ullmann, Ulrich Prahl
Summary: The high strength Mg-4Zn-0.5Ca-0.5RE magnesium alloy was subjected to different hot deformation processes to refine its grain structure and enhance its mechanical properties. The extrusion process resulted in a dynamically recrystallized microstructure which improved the mechanical properties compared to the as-cast counterpart, while the forging process led to a partially recrystallized microstructure, indicating the need for high strains. The combination of extrusion and forging was found to be effective in achieving more intense grain refinement and improved strength without sacrificing ductility.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Saeed Deldar, Hamed Mirzadeh, Mohammad Habibi Parsa
Summary: This study investigates the microstructure and mechanical properties of a low-alloy Cu-bearing TRIP steel and their dependence on the processing history. It is found that the distributions of retained austenite and bainite are influenced by the initial cold-rolled microstructure, which can be controlled by hot-rolling route and cooling rate. The mechanical properties and TRIP effect are strongly influenced by the initial microstructure, and the addition of copper improves the amount of retained austenite and strength-ductility balance.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Javad Rezaei, Mohammad Habibi Parsa, Hamed Mirzadeh
Summary: The effects of heating temperature, heating rate, and holding time on the austenitization process of near-eutectoid high-carbon steel were investigated. Experimental tests and simulations were conducted to understand the variations of relevant parameters and the underlying reasons for different phase transformation mechanisms. A continuous heating transformation diagram was drawn to consider the influence of heating rate on the austenitization process and austenite grain size.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Sajedeh Valeh, Hamed Mirzadeh, Milad Roostaei, Mohammad Javad Sohrabi
Summary: In this study, the effects of Ti microalloying and thermomechanical processing on the recrystallization behavior and mechanical properties of type 316 stainless steel were investigated. The presence of Ti and TiC carbides were found to play important roles in grain refinement. Annealing resulted in the formation of fine-grained microstructures and improved mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Mohammad Javad Sohrabi, Hamed Mirzadeh, Saeed Sadeghpour, Reza Mahmudi
Summary: This study compares the kinetics of alpha'-martensite formation in the ultrafine-grained (UFG) and coarse-grained regimes using AISI 304L stainless steel. The results show that the simple JMAK-type model, which considers the dependency of the volume fraction of alpha'-martensite on the strain, can effectively model the experimental data, predict nucleation sites based on theoretical Avrami exponents, and characterize the transformation kinetics at low and high strains.
IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Chemical
Yongxiang Wu, Nguyen Thi Hong Nhung, Deqian Zeng, Nengneng Luo, Akira Otsuki, Gjergj Dodbiba, Toyohisa Fujita
Summary: This study proposed a novel method for synthesizing flower-like vaterite calcium carbonate using nanobubble-containing ethanol and water mixed solution as the solvent and discussed the formation mechanism of vaterite with different shapes. The synthesized vaterite has significant practical interest in the integrated treatment of wastewater contaminated by heavy metals with effective Cd(II) removal, providing a promising field for studying heavy metal and pollutant adsorption in the liquid phase.
ADVANCED POWDER TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jian Gong, Lipo Cheng, Ming Liu, Jie Jiang, Xiaoduo Ou
Summary: This study investigates the effects of particle shape on the collapse of granular columns using the discrete element method. The results show that particle shape has a significant impact on deposition morphology, energy evolution, and mechanical coordination number. Sphericity and angularity are identified as the most important macroscale factors, while roughness has a weaker microscale influence.
ADVANCED POWDER TECHNOLOGY
(2024)
