Article
Materials Science, Ceramics
Dexiang Hou, Pengcheng Cai, Jun Luan, Zhigang Yu, Jieyu Zhang, Kuo-Chih Chou
Summary: In this paper, various models were used to predict the surface tension of Sn-Ag-Cu (SAC) based ternary, quaternary, and quinary alloys, and the results were verified by experimental data. The General Solution model (GSM) combined with binary experimental data achieved the best agreement with experimental values for most systems. The GSM model combined with the binary Butler equation also provided reliable results for systems without sufficient binary experimental data, guiding the design of novel Pb-free solders.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Chenglin Huang, Jiang Wang, Sansan Shuai, Jun Wang, Ruibin Nan, Rui Guo, Shilei Li, Chuanjun Li, Chaoyue Chen, Zhongming Ren
Summary: This study aimed to determine the solid/liquid interfacial energies of an Al-2.5at pct Cu alloy at 568 degrees C under different intensities of static magnetic field (SMF) using the dihedral angle method. The results showed that the interfacial energies in the Al-Cu alloy increased with increasing SMF intensities between 0 and 12 T. Experimental results revealed a threefold variation in the interfacial energies. The theoretical prediction of the interfacial energies under SMF was consistent with the experimental results.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
M. R. Gazizov, A. N. Belyakov, R. Holmestad, M. Yu. Gazizova, V. S. Krasnikov, P. A. Bezborodova, R. O. Kaibyshev
Summary: The deformation behavior of {111}Al omega plates in an Al-Cu-Mg-Ag alloy was analyzed using atomic-resolution scanning transmission electron microscopy (STEM). The transition from particle shearing to Orowan dislocation loop formation was observed at critical plate thicknesses of 3 and 3.5 cθo (2.54-2.97 nm) when considering the omega phase as consisting of the orthorhombic theta lattice (θo). For thinner plates, a full dislocation allowed particle segments to shift relative to each other in planes orthogonal to the particle habit plane. Thicker plates exhibited dislocation loops consisting of two segments with jogs, causing particle segmentation and deviation from the Al/omega orientation relationship.
Article
Chemistry, Physical
Bo Jin, Shuhong Liu, Kai Xu, Qiang Lu, Yong Du
Summary: Thermophysical properties are crucial for microstructure simulation in precipitation and solidification processes. In this study, the molar volume and surface tension of the Al-Cu-Ag ternary system were investigated using the CALPHAD approach and first-principles calculation. Based on experimental and theoretical data, thermophysical databases of molar volume and surface tension were constructed for the Al-Cu-Ag system, considering metastable phases. The surface tension of solution alloys could be predicted using the Butler equation with input of thermodynamic and thermophysical parameters, taking into account the excess molar volume. The results showed good agreement with experimental data and can be applied for simulating microstructure evolution.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
Qingsong Tong, Jing Ge, Maohua Rong, Jielong Li, Jian Jiao, Lu Zhang, Jiang Wang
Summary: In this work, thermodynamic modeling of the Ag-Cu-Sn ternary system was performed using the CALPHAD method, and a set of self-consistent thermodynamic parameters was obtained.
Article
Chemistry, Physical
R. S. P. Flood, H. Henein
Summary: This study measured the viscosity, surface tension, and density of liquid Al and Al-22.5wt.%Cu using the discharge crucible method. It was found that the density was significantly lower than expected, possibly due to wetting of Al or Al-Cu at the orifice impacting the flow rate. Further research will focus on extending the discharge crucible model to account for wetting at high temperatures.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Nanoscience & Nanotechnology
Xinyue Deng
Summary: Al-Cu-Mg-Ag single crystals with five different orientations were studied to investigate the precipitation behavior during stress aging. The formation of S precipitates increased with applied stress, and the distribution of omega 1/omega 2 varied depending on the plane orientation of single crystals. The hardness of single crystals with (6 5 10) orientation increased the most after stress aging, showing good modeling of hardness changes with applied stress and plane orientations.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Timothy Lee, Jintao Fu, Lin Wang, Jiaxin Liu, Samuel S. Welborn, Johanna Nelson Weker, Eric Detsi
Summary: This study demonstrates that air-free, electrolytic dealloying at room temperature can be used to isolate the difficult-to-synthesize ternary intermetallic compound Mg11Cu6Al12. The isolated Mg11Cu6Al12 phase exhibits a pure microstructure, making it suitable for fundamental research and other difficult-to-synthesize intermetallic compounds.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Qiang Lu, Jingjing Hu, Tong Yang, Yucheng Wang, Yao Xiao, Xingwu Li, Namin Xiao, Jinsan Wang, Zhixiu Wang, Hai Li, Liya Li, Kai Li, Yong Du
Summary: In heat-resistant Al-Cu-Mg-Ag alloys, the presence of AgMg segregation layer on omega phase ensures its high thermal stability. It has been proved that an increase in Ag content can promote the precipitation of omega, even in an Al-Cu-Mg-Ag-Si alloy with a Mg/Si mass ratio around 1.7. The key point is to obtain an Ag/Mgexcess atomic ratio greater than 1 in the supersaturated solid solution. Although the fine precipitation of omega increases the total volume fraction of precipitates and yield strength, their quick coarsening at high temperature leads to a more pronounced strength loss.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
S. L. Yang, N. Wilson, J. F. Nie
Summary: Re-examination through DFT calculation shows that the widely-accepted orthorhombic structure of sz precipitate in Al-Cu-Mg-Ag alloys is actually tetragonal, which can facilitate the formation of the equilibrium theta phase.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
M. R. Gazizov, A. N. Belyakov, R. Holmestad, M. Yu. Gazizova, V. S. Krasnikov, P. A. Bezborodova, R. O. Kaibyshev
Summary: The coarsening behavior of strengthening particles in peak-aged Al-Cu-Mg-Ag alloy during creep at 150 degrees C and 165 degrees C has been studied. It was found that the average thickness and diameter of {111}Al omega plates strongly depend on creep time and less on applied stress levels and plastic strain during creep. The volume fraction of omega particles increased during long-term creep and exceeded the value after peak aging. S-phase and theta'-phase independently nucleate and intergrow to form precipitate complexes. The size of the complex particles is sensitive to the plastic strain level achieved at different applied stresses during creep.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Qing Cai, Changming Fang, Chamini Mendis, Isaac T. H. Chang, Brian Cantor
Summary: Eutectic alloys were fabricated from the quaternary Al-Cu-Si-Ni system, and a ternary eutectic reaction was found. The as-solidified microstructure exhibited a lamellar theta-Al2(CuNi) phase and fibrous Si morphology. The thermal stability of the eutectic alloy was investigated, and the Ni solution in theta-Al2(CuNi) phase contributed to its thermal stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Guoqiang Luo, Peibo Li, Jianian Hu, Jingwei Guo, Yi Sun, Qiang Shen
Summary: The study designed an Al-Cu-Ag-C material system to address the deterioration of mechanical properties caused by intermetallic compounds generated during Al-Cu sintering. The addition of Ag significantly improved the mechanical properties of the composite, including tensile strength, compressive strength, and strain.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Physics, Multidisciplinary
A. A. Ajayi, E. Oyeniyi, O. M. Oshakuade
Summary: A theoretical model was used to study the energetics of liquid Ag-Cu, Ag-Sb, and Cu-Sb binaries based on compound formation in binary alloys at temperatures of 1423K, 1250K, and 1190K, respectively. The model was fitted with experimental data to determine the Gibbs free energies of mixing, thermodynamic activities, enthalpies, and entropies of mixing. The study aimed to understand the chemical order in the bulk and predict the surface properties of the alloys. The theoretical model showed good agreement with experimental data and provided reliable predictions of surface properties. The results indicated that Sb atoms had the highest tendency to form heterocoordinated bonds among Ag, Cu, and Sb atoms in the three binaries, and the surface of the Ag-Cu-Sb ternary would be Sb-enriched and Cu-deficient in most compositions.
PRAMANA-JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
M. R. Gazizov, A. O. Boev, C. D. Marioara, R. Holmestad, D. A. Aksyonov, M. Yu Gazizova, R. O. Kaibyshev
Summary: The atomic structure of omega plates forming on {111}Al planes in an Al-Cu-Mg-Ag alloy has been investigated, revealing volumetric and structural incompatibilities with the Al matrix. Different thicknesses of omega plates were studied under peak-aged conditions, showing shear components and misfit strains affecting plate interfaces and the thickening of omega precipitates.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Andriy Yakymovych, Adam Slabon, Yuriy Plevachuk, Vasyl Sklyarchuk, Bohdan Sokoliuk
APPLIED NANOSCIENCE
(2019)
Article
Thermodynamics
Alexandra Dobosz, Yuriy Pleyachuk, Vasyl Sklyarchuk, Bogdan Sokoliuk, Olha Tkach, Tomasz Gancarz
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2019)
Article
Chemistry, Physical
Yu. Plevachuk, O. Tkach, P. Svec, P. Svec
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION
(2019)
Article
Chemistry, Physical
Alexandra Dobosz, Yuriy Plevachuk, Vasyl Sklyarchuk, Bogdan Sokoliuk, Olha Tkach, Tomasz Gancarz
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Engineering, Electrical & Electronic
A. Dobosz, Yu. Plevachuk, V. Sklyarchuk, B. Sokoliuk, T. Gancarz
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Chemistry, Physical
Alexandra Dobosz, Yuriy Plevachuk, Vasyl Sklyarchuk, Bogdan Sokoliuk, Tomasz Gancarz
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Nanoscience & Nanotechnology
Andriy Yakymovych, Adam Slabon, Peter Svec, Yuriy Plevachuk, Lubomir Orovcik, Otto Bajana
APPLIED NANOSCIENCE
(2020)
Article
Nanoscience & Nanotechnology
A. Aspalter, A. Cerny, M. Goeschl, M. Podsednik, G. Khatibi, A. Yakymovych, Yu Plevachuk
APPLIED NANOSCIENCE
(2020)
Article
Engineering, Aerospace
R. Novakovic, M. Mohr, D. Giuranno, E. Ricci, J. Brillo, R. Wunderlich, I. Egry, Yu Plevachuk, H. -J. Fecht
MICROGRAVITY SCIENCE AND TECHNOLOGY
(2020)
Article
Nanoscience & Nanotechnology
Andriy Yakymovych, Yuriy Plevachuk, Lubomir Orovcik, Peter Svec
Summary: The addition of metal nanoparticles to Sn-3.0Ag-0.5Cu solder can impact the morphology of solder alloy and solder/Cu joint, leading to a decrease in the average thickness of the interfacial intermetallic compound layer. This can potentially improve the mechanical reliability of solder joints.
APPLIED NANOSCIENCE
(2022)
Article
Physics, Multidisciplinary
M. Dufanets, V Sklyarchuk, Yu Plevachuk
JOURNAL OF PHYSICAL STUDIES
(2020)
Article
Physics, Multidisciplinary
M. Dufanets, V Sklyarchuk, Yu Plevachuk
UKRAINIAN JOURNAL OF PHYSICS
(2020)
Article
Physics, Multidisciplinary
O. Tkach, Yu Plevachuk, V Sklyarchuk, Y. Kulyk, R. Serkiz, V Didukh
JOURNAL OF PHYSICAL STUDIES
(2020)
Article
Materials Science, Multidisciplinary
M. Dufanets, V Sklyarchuk, Yu Plevachuk, Y. Kulyk, S. Mudry
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2020)
Article
Thermodynamics
Yuriy Plevachuk, Vasyl Sklyarchuk, Gernot Pottlacher, Thomas Leitner, Peter Svec, Peter Svec, Lubomir Orovcik, Marta Dufanets, Andriy Yakymovych
HIGH TEMPERATURES-HIGH PRESSURES
(2020)