Article
Materials Science, Multidisciplinary
P. Dinesh, S. P. KumareshBabu, S. Natarajan
Summary: The study found that the addition of lanthanum can induce microstructural changes and mechanical characteristics in Mg-9Li-3Al alloys. The addition of an appropriate amount of lanthanum is beneficial to the alloy system, resulting in grain refinement and increased tensile strength, while excessive addition may lead to grain coarsening and reduced mechanical strength.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
P. S. M. Jena, S. Tripathy, B. Mahato, N. Paulose, D. C. Fernando, J. K. Sahu
Summary: The high-temperature tensile deformation behavior of polycrystalline nickel-based superalloy 720Li used for manufacturing aero engine disks was studied through uniaxial tensile tests and microscopic examinations. The alloy exhibits strain hardening at temperatures below 650 degrees C, but softening at temperatures of 720 and 800 degrees C after plastic yielding. The main reason for strain softening is identified as void nucleation at the primary gamma'/gamma interface. This void nucleation is influenced by the size of the gamma' precipitate and the difference in Schmid factor between the precipitate and the matrix.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Tiffany Wu, David C. Dunand
Summary: This study investigates the microstructure and thermomechanical properties of Al11Ce3, an intermetallic compound that strengthens Al-Ce based eutectic alloys. The results show that Al11Ce3 is hard and brittle, with coarse and elongated grains and internal twins. The thermal expansion coefficient and oxidation kinetics of Al11Ce3 vary with temperature. At 500 degrees C, Al11Ce3 exhibits extensive plastic creep deformation. The study also found that the creep resistance of Al11Ce3 at 500 degrees C is similar to that of L1(2)-Al3Sc.
Article
Chemistry, Physical
Anna Knaislova, Vendula Simunkova, Pavel Novak, Filip Prusa, Marcello Cabibbo, Lucyna Jaworska, Dalibor Vojtech
Summary: Intermetallic alloys based on Ti-Al-Si system are significant for their excellent high-temperature properties, but high brittleness at room temperature is a main concern. Adding alloying elements has been attempted to improve the properties, but porous microstructure remains a challenge.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Juraj Lapin, Kateryna Kamyshnykova
Summary: The addition of Ta and W has significant influence on the microstructure and mechanical properties of tilt-cast Ti-45Al-5Nb-2C alloy. Ta segregates into carbide particles and reduces Nb dissolution, while W stabilizes the beta/B2 phase in the alpha(2) + gamma regions and significantly increases Vickers microhardness.
Article
Chemistry, Physical
Michaela Stamborska, Juraj Lapin, Kateryna Kamyshnykova
Summary: The preparation, microstructure, and mechanical behaviour of Ni3Al-based superalloy were studied. It was found that the heat-treated alloy had a uniform distribution of MC carbides and γ'(Ni3Al) precipitates. The equivalent plastic strain distribution was calculated using finite element analysis, and a correlation curve between Vickers microhardness values and equivalent plastic strains was proposed to quantify the local strain hardening state.
Review
Materials Science, Multidisciplinary
Yu-ting Wu, Chong Li, Ye-fan Li, Jing Wu, Xing-chuan Xia, Yong-chang Liu
Summary: The heat treatment of Ni3Al-based alloys significantly influences the microstructure of the alloys and desirable mechanical properties can be achieved through heat treatment. Additionally, the evolution of secondary phases during heat treatment, including the kinetics of precipitate growth, and the effects of heat treatment on the mechanical properties of the alloys are discussed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Correction
Materials Science, Multidisciplinary
Saeed Pashmforoosh, Sadegh Shahriyari, Omid Mirzaee
Summary: The affiliation of the third author was published incorrectly in the original article and has now been corrected.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Guoming Zheng, Bin Tang, Songkuan Zhao, Yizhen Xie, William Yi Wang, Jinshan Li, Lei Zhu
Summary: Dislocation slipping and mechanical twinning control the plastic deformation of lamellar micro-structure (LM) in TiAl intermetallics. However, when the interlamellar spacing is reduced to the nanometer scale, the deformation mechanism switches to the development of long-period stacking-ordered (LPSO) structures. The formation of LPSO structures during deformation can result in greater high-temperature yield strength compared to LMs deformed via dislocation gliding or mechanical twinning.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Chemistry, Physical
Chunchang Shi, Guohua Wu, Liang Zhang, Xiaolong Zhang, Jiangwei Sun, Jinshuo Zhang, Liangbin Li
Summary: The microstructure and mechanical properties of casting Al-3Li-2Mg-1Zn-0.1Zr alloys modified by Sc additions were investigated in this study. The addition of Sc led to a reduction in grain size and enhanced grain growth resistance. After heat treatment, core-shell composite particles precipitated from the matrix, with the shell entirely composed of Al3Li phases.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yen-Yi Chen, Jian-Hong Li, Shu-Yi Tung, Ming-Hung Tsai
Summary: Equilibrium or near-equilibrium phase data are crucial for the development and application of high entropy alloys (HEAs). This study investigated the phase constituents and microstructures of three equimolar CoCrFeNiX alloys (X = B, Al, Ga) after prolonged annealing and compared them with CALPHAD predictions. The data obtained are valuable for studying phase formation and other aspects of HEAs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Kateryna Kamyshnykova, Juraj Lapin, Tatiana Pelachova, Tomas Cegan, Jan Jurica, Anastasia Volodarskaja
Summary: The microstructure and mechanical properties of five alloys with varying carbon content were studied. The alloys were prepared by vacuum induction melting and centrifugal casting, followed by hot isostatic pressing and heat treatment. The microstructure of the heat-treated alloys consists of alpha 2 + gamma lamellar grains and gamma grain boundaries. Carbon content affects the interlamellar spacing and Vickers microhardness. Some alloys show improved creep resistance at high temperatures.
Article
Chemistry, Physical
Yingchun Fang, Kaihang Jin, Cheng Liu, Haiwen Wang, Xiao Wei, Qingqing Ding, Hongbin Bei, Xinbao Zhao, Ze Zhang
Summary: High-Nb-containing TiAl alloys are promising for high-temperature structural components but suffer from brittleness at room temperature. A novel alloy design strategy involving LaB6 addition was proposed to improve ductility through grain refinement and oxygen removal. LaB6 decomposition generated La2O3 and TiB ceramic phases, leading to the transformation of microstructure and enhancement of compressive properties. The addition of 0.4 wt% LaB6 increased ultimate compressive strength from 1065 MPa to 1503 MPa and fracture strain from 17.1% to 26.98%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yuanchun Huang, Jinchuan Wen, Yu Liu, Yongxing Zhao
Summary: In this study, an Al70Zn10Mg10Cu5Si5 medium entropy alloy was prepared by electromagnetic stirring casting for the first time. It was found that the electromagnetic frequency significantly affected the content, distribution, and morphology of the alloy phases. The alloy fabricated with a specific electromagnetic frequency showed improved mechanical properties, including hardness, strength, and plasticity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Xiaoyu Gao, Jian Liu, Wujing Fu, Yongjiang Huang, Zhiliang Ning, Zhixiong Zhang, Jianfei Sun, Wen Chen
Summary: This study introduces a heterogeneous gradient structure into CoCrFeNi high-entropy alloy microfibers through thermomechanical processing, achieving an excellent combination of high strength and ductility. The microfibers show ultrahigh yield strength and outstanding uniform elongation at low temperatures, thanks to the ultrafine grains, heterogeneous gradient structure, and activation of multiple deformation mechanisms.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Multidisciplinary
M. S. A. Karunaratne, S. Kyaw, A. Jones, R. Morrell, R. C. Thomson
JOURNAL OF MATERIALS SCIENCE
(2016)
Article
Materials Science, Multidisciplinary
Li Wang, Sally Parker, Andrew Rose, Geoff West, Rachel Thomson
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2016)
Article
Materials Science, Multidisciplinary
Zhiqi Yao, Craig C. Degnan, Mark A. E. Jepson, Rachel C. Thomson
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2016)
Article
Materials Science, Multidisciplinary
L. Wang, S. V. Parker, A. J. Rose, G. D. West, R. C. Thomson
MODELLING AND SIMULATION IN MATERIALS SCIENCE AND ENGINEERING
(2016)
Article
Engineering, Mechanical
T. O. Mbuya, Y. Gu, R. C. Thomson, P. A. S. Reed
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2017)
Article
Materials Science, Multidisciplinary
M. S. A. Karunaratne, M. A. E. Jepson, N. J. Simms, J. R. Nicholls, R. C. Thomson
JOURNAL OF MATERIALS SCIENCE
(2017)
Article
Materials Science, Multidisciplinary
Sabrina Yan, Scott Doak, Rachel Thomson, Rebecca Higginson
MATERIALS AT HIGH TEMPERATURES
(2018)
Article
Materials Science, Multidisciplinary
X. Xu, G. D. West, J. A. Siefert, J. D. Parker, R. C. Thomson
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2017)
Article
Materials Science, Multidisciplinary
Si Kyaw, Arthur Jones, Mark A. E. Jepson, Tom Hyde, Rachel C. Thomson
MATERIALS & DESIGN
(2017)
Article
Materials Science, Multidisciplinary
X. Xu, G. D. West, J. A. Siefert, J. D. Parker, R. C. Thomson
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2018)
Article
Engineering, Mechanical
Christopher M. Harvey, Simon Wang, Bo Yuan, Rachel C. Thomson, Gary W. Critchlow
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2018)
Article
Metallurgy & Metallurgical Engineering
J. A. Siefert, J. D. Parker, R. Thomson
Article
Mechanics
Bo Yuan, Christopher M. Harvey, Rachel C. Thomson, Gary W. Critchlow, Simon Wang
THEORETICAL AND APPLIED MECHANICS LETTERS
(2018)
Proceedings Paper
Materials Science, Multidisciplinary
J. Guo, M. A. E. Jepson, R. C. Thomson
ADVANCES IN MATERIALS TECHNOLOGY FOR FOSSIL POWER PLANTS: PROCEEDINGS FROM THE EIGHTH INTERNATIONAL CONFERENCE, 2016
(2016)
Proceedings Paper
Materials Science, Multidisciplinary
W. Philpott, M. A. E. Jepson, R. C. Thomson
ADVANCES IN MATERIALS TECHNOLOGY FOR FOSSIL POWER PLANTS: PROCEEDINGS FROM THE EIGHTH INTERNATIONAL CONFERENCE, 2016
(2016)
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.
