Article
Physics, Applied
M. Kratzer, M. Huszar, L. Tengg, T. Billovits, B. Kaufmann, P. Supancic, H. Clemens, S. Mayer, C. Teichert
Summary: The study reveals that different phases of γ-TiAl-based alloys exhibit significantly different resistivity values. Results from CAFM and μ4PP measurements show good agreement for the α(2) and γ phases, while measurements of the β(o) phase using μ4PP are unreliable due to the formation of a contact barrier.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Xuesong Yang, Xuewen Li, Youhong Peng, Donghai Li, Tongtong Zhang, Guohua Fan, Chao Xu, Hao Wu, Jie Zhang
Summary: Two-phase titanium aluminides are favored for high-temperature structural applications due to their excellent thermo-physical properties. In this study, a novel laminated TiAl matrix composite (LMC) has been fabricated, exhibiting a good combination of strength and ductility at 850 degrees C. The thermal residual stress induced by the fabrication process has a periodic distribution across the layers, affecting the stress state and twining behavior of Ti3Al.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Ali Shaaban, Hirotoyo Nakashima, Mitsutoshi Ueda, Masao Takeyama
Summary: This study investigated the effects of oxygen addition on TiAl alloys at 1023 K, finding that it stabilized the alpha phase, reduced oxidation mass gains, and altered microstructure and phase transformations without significantly affecting oxidation resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zhenquan Liang, Shulong Xiao, Yi Shao, Dazhao Chi, Xinyi Li, Yunfei Zheng, Lijuan Xu, Xiang Xue, Jing Tian, Yuyong Chen
Summary: In this study, the short-term creep behaviors of high Nb containing TiAl alloys with different microstructure characteristics at 800°C under a wide range of stresses were investigated. It was found that increasing Al content and introducing C and Y2O3 can effectively reduce the steady-state creep rate and enhance the creep resistance, with the latter having a more significant effect. The creep behavior of high Nb containing TiAl alloys strongly depends on the stress level and the corresponding creep deformation mechanism changes accordingly.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Crystallography
Xuexia Zhao, Junxin Wei, Hui Niu, Shouzhen Cao, Zhihao Du, Yi Jia, Haoming Yao, Zhixiong Zhang, Jianchao Han
Summary: A novel TiAl alloy was designed and fabricated in this study, and its thermoplastic deformation behavior, microstructure evolution, and mechanical properties were systematically studied during near-isothermal forging. The results showed that the alloy exhibited excellent mechanical properties at both room temperature and elevated temperature, attributed to the flawless forging disk without cracking, the microstructure composed of fine equiaxed grains and residual (alpha 2/gamma) lamellae, and the reduced hardness of the B2 phase and the hardness difference between the B2 and gamma phase due to the addition of Cr and V elements.
Review
Materials Science, Multidisciplinary
Michael Musi, Gloria Graf, Helmut Clemens, Petra Spoerk-Erdely
Summary: This review provides a detailed survey of the research work on the influence of technically important alloying elements on the Ti-Al phase diagram in γ-TiAl based alloys. After introducing the fundamentals of phase transformations, the alloying elements are discussed and their particularities are highlighted.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Zhengkun Cai, Qianqian Guo, Minjin Jiang, Xiaosong Jiang, Song Chen, Hongliang Sun
Summary: The presence of water vapor significantly increased the oxidation kinetics of TiAl-based alloys and changed the morphology of the oxide scales; Air-water vapor environment enhanced the directional growth of TiO2; The different added elements led to different oxidation behaviors of TiAl-based alloys in this environment.
Article
Materials Science, Multidisciplinary
Zhenquan Liang, Shulong Xiao, Qingchao Li, Xinyi Li, Dazhao Chi, Yunfei Zheng, Lijuan Xu, Xiang Xue, Jing Tian, Yuyong Chen
Summary: A creep-resistant Ti-45Al-6Nb-2.5V-0.15Y2O3 alloy was studied at different creep stages. It was found that the creep deformation of this alloy is influenced by dislocation slip, climb of gamma phase, and alpha 2 phase due to the activation of a slip system. The interactions among dislocation, twin boundary, and Y2O3 particle cause creep hardening, while dynamic recrystallization softens the alloy. Surface and bulk damage caused by oxidation and void nucleation increase the creep rate until fracture. Additionally, TiAl2 phases nucleate and grow during creep, maintaining a small planar disregistry with the gamma matrix.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
David Wimler, Katharina Kaesznar, Michael Musi, Christoph Breuning, Matthias Markl, Jozef Keckes, Helmut Clemens, Carolin Koerner, Svea Mayer
Summary: This study investigates the impact of different process parameters on the aluminum content and microstructure of an alloy based on γ-TiAl during additive manufacturing, with examinations using electron microscopy, X-ray spectroscopy, and diffraction experiments. The results demonstrate a decrease in the gamma-TiAl phase content with increasing energy input, affecting the mechanical properties after heat treatment. The preferred orientation of the gamma phase at high energy inputs is attributed to the directional solidification of the beta phase.
MATERIALS & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Jun Cao, Tielong Sun, Zhichao Guo, Gang Yang, Yongfeng Liang, Junpin Lin
Summary: This study demonstrates that trace carbon alloying can significantly improve the room-temperature mechanical properties of a cast Ti-46Al-6Nb alloy. By improving multiple factors simultaneously, this research offers an accurate and feasible strategy for utilizing interstitial carbon to solid-solution strengthen TiAl alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Metallurgy & Metallurgical Engineering
Yi Jia, Zhi-dong Liu, Sha Li, Hao-ming Yao, Zhong-kai Ren, Tao Wang, Jian-chao Han, Shu-long Xiao, Yu-yong Chen
Summary: The study investigated the effects of different cooling rates and 0.25 at.% TiB2 addition on the solidification microstructure and mechanical properties of Ti-48Al-2Cr-2Nb alloys. Results showed that changing the cooling rate and adding TiB2 could refine the grain size and improve the mechanical properties of the alloy.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Chemistry, Physical
Solomon Kerealme Yeshanew, Chunguang Bai, Qing Jia, Tong Xi, Zhiqiang Zhang, Diaofeng Li, Zhizhou Xia, Rui Yang, Ke Yang
Summary: The hot workability behavior of antibacterial Ti6Al4V-5Cu alloy was investigated, and the relationship between deformed microstructures and deformation parameters was established. The alloy's deformation was influenced by temperature and strain rate, with both work hardening and flow softening observed.
Article
Nanoscience & Nanotechnology
Hui Tao, Huizhong Li, Li Wang, Yixuan Che, Weiwei He, Huixia Li, Rui Zhou, Xiaopeng Liang
Summary: This study investigated the effect of small-strain forging on the microstructure and mechanical properties of a Ti-48Al-2Cr-2Nb alloy prepared by selective electron beam melting (SEBM). It was found that small-strain forging reduced the fraction of coarse grains and promoted the formation of fine sub-grains and alpha 2/gamma lamellar colonies. This led to an increase in tensile strength and ductility. Additionally, the anisotropy of tensile properties was reduced after small-strain forging. The results suggest that small-strain forging is an effective post-treatment method for improving the mechanical properties of SEBM prepared TiAl alloys at high temperatures.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Li Wang, Xiaopeng Liang, Bin Liu, Michael Oehring, Jonathan Paul, Jie Liu, Min Song, Florian Pyczak, Yong Liu
Summary: The interaction between dislocations and perovskite Ti3AlC precipitates in a titanium alloy was investigated. It was found that the Ti3AlC carbides can be sheared by dislocations, leading to the formation of stacking faults and crossed stacking fault configurations. These stacking faults are induced by the shear of Shockley partial dislocations and further extended along specific crystal planes.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Jieren Yang, Zitong Gao, Yongfeng Liang, Yulun Wu, Jinguang Li, Rui Hu
Summary: Fine-grained nearly-lamellar (FGNL) microstructures and ultrafine alpha(2)/gamma lamellar microstructures were successfully obtained by means of alpha-recrystallization in a Tie48Ale2Nb e2Cr alloy. The microstructure refinement is governed by small-strain alpha-deformation, with dominating continuous dynamic recrystallization (CDRX) responsible for lamellar grain refinement.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Jianying Wang, Jianpeng Zou, Hailin Yang, Xixi Dong, Peng Cao, Xiaozhou Liao, Zhilin Liu, Shouxun Ji
Summary: Superior mechanical properties have been achieved in a coarse-grained single-phase face-centered cubic (fcc) medium-entropy alloy (MEA) by carefully designing multi-scale heterogeneous structures. The alloy exhibits high ultimate tensile strength and fracture strain, mainly attributed to the favorable heterogeneous fcc matrix, coherent spherical precipitates, and a high density of crystalline defects.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Cheng Qian, Yong Liu, Huichao Cheng, Kun Li, Bin Liu, Xin Zhang
Summary: In this study, functionally graded cemented carbides with a multi-principal-element alloy binder were prepared. The results showed that a higher carbon content can increase the diffusion rate and channel of carbon, leading to improved mechanical properties of the carbides obtained at appropriate carburization temperatures.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yaojia Ren, Hong Wu, Bin Liu, Quan Shan, Sheng Guo, Zengbao Jiao, Ian Baker
Summary: A high hardness, crack-free AlCoCuFeNi high-entropy alloy with good corrosion resistance was successfully produced by spark plasma sintering and hot rolling. The alloy exhibited a fine and uniform microstructure, low anisotropy, good wear and corrosion resistance, and grain boundary sliding as the creep mechanism.
Article
Development Studies
Bin Liu, Huajian Fang, Xiaosheng Qin, Feilian Zhang, Jingjing Li
Summary: An integrated multi-criteria analysis framework is proposed for sustainable water management of built reservoirs with dam-heightening-based decision. The study shows that this framework can effectively handle the decision-making problem of reservoir construction schemes and identifies subjective weighting factors. Game theory is found to be superior to traditional methods in integrating collective wisdom and objective indicators. This study is of significant reference value for the feasibility demonstration of reservoirs with water transferring tasks worldwide.
SUSTAINABLE DEVELOPMENT
(2023)
Article
Biochemistry & Molecular Biology
Zi-Mei Peng, Yi-Yue Zhang, Dan Wei, Xiao-Jie Zhang, Bin Liu, Jun Peng, Xiu-Ju Luo
Summary: This study demonstrates that MALT1 upregulation promotes necroptosis in ischemic stroke by enhancing the degradation of A20. Inhibition of MALT1 can alleviate brain injury and restore the expression of A20, leading to the inhibition of necroptosis.
ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS
(2023)
Article
Computer Science, Artificial Intelligence
Jian Liu, Na Song, Zhengde Xia, Bin Liu, Jinxiao Pan, Abdul Ghaffar, Jianbin Ren, Ming Yang
Summary: This paper analyzes the correlation and constraint relationship between the optical flow field and motion field of multi-view images to effectively reconstruct the angle domain of the light field based on sparse light field data. The proposed method can reconstruct texture, shadow, and color information in the light field of a long-baseline scene with high quality and is suitable for dense light field reconstruction in complex scenes.
PATTERN RECOGNITION
(2023)
Article
Nanoscience & Nanotechnology
Yaojia Ren, Bo Han, Hong Wu, Jianchuan Wang, Bin Liu, Bingqiang Wei, Zengbao Jiao, Ian Baker
Summary: For the first time, the formation of nanotwins and 9R phase were observed in ultrafine-grained Ti-5wt.%Cu alloys with an average lath width of 223 nm produced by laser powder bed fusion. The 9R phase originated from lath boundaries with Cu segregation and terminated at the other boundary of the lath. Deformation caused curvature of the lath boundaries and an increase in lath width, promoting the transition of the central 9R phase to nanotwins. This work provides a new route for in situ production of nanotwinned Ti by the laser melting-induced segregation of Cu.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Li Wang, Xiaopeng Liang, Bin Liu, Michael Oehring, Jonathan Paul, Jie Liu, Min Song, Florian Pyczak, Yong Liu
Summary: The interaction between dislocations and perovskite Ti3AlC precipitates in a titanium alloy was investigated. It was found that the Ti3AlC carbides can be sheared by dislocations, leading to the formation of stacking faults and crossed stacking fault configurations. These stacking faults are induced by the shear of Shockley partial dislocations and further extended along specific crystal planes.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
Shenghan Gao, Ao Fu, Zhonghao Xie, Tao Liao, Yuankui Cao, Bin Liu
Summary: High-activity spherical TaNbTiZr refractory high-entropy alloy (REHA) powders were successfully prepared using the methods of electrode induction melting gas atomization (EIGA) and plasma rotating electrode process (PREP). Both methods produced powders with a single-phase body-centered cubic (BCC) structure and low oxygen content. The PREPed powders exhibited higher sphericity and smoother surface, but larger particle size compared to the EIGAed powders.
Article
Engineering, Chemical
Shikun Li, Bin Liu, Xiao Jia, Min Xu, Ruoyu Zong, Xunfeng Li, Guohua Liu, Xiulan Huai
Summary: Understanding the relationship between the physical properties of composite components and thermal conductivity is crucial for improving overall heat-dissipation performance. A numerical simulation was conducted to investigate the anisotropic thermal conductivity and heat flux distributions of h-BN/nanofiber composite films. Factors such as the intrinsic thermal conductivity of the matrix and filler, filler geometry and orientation, and interface thermal resistance were considered. The study found that increasing the intrinsic thermal conductivity of the matrix and tuning the interface thermal resistance could enhance the thermal conductivity, while the contributions from increasing filler conductivity and length were limited.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Chemical
Hui Wang, Longhao Cao, Mengmeng Wang, Bin Liu, Longping Deng, Guohua Li, Ya-Jun Cheng, Jie Gao, Yonggao Xia
Summary: A process to recycle valuable metals from spent lithium-ion batteries (LIBs) by separating aluminum foil and cathode material is proposed. The separated aluminum foil is used as a reducing agent to generate high-purity Ni-Co-Mn nanopowders. The process achieves high recovery efficiencies of Li, Ni, Co, and Mn and transforms waste aluminum into a high-value-added reductant, greatly reducing costs and making the process green.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Xu Wang, Xiaofeng Li, Huiqi Xie, Touwen Fan, Li Zhang, Kaiyang Li, Yuankui Cao, Xiaohui Yang, Bin Liu, Peikang Bai
Summary: The effects of Al and La elements on the mechanical properties of CoNiFe0.6Cr0.6 high-entropy alloys with a face-centered cubic structure were investigated using first-principles calculations. The study discussed in detail the variations of various physical parameters as a function of Al and La concentration. The results showed that the resistance to deformation decreased with the increase of Al and La concentration, while the plasticity and ductility of the alloys improved. The addition of Al and La also strengthened the metallic characteristic of atomic bonding and increased the material's anisotropy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Jingli Liu, Han Li, Bin Liu, Luling Wang, Jianqiu Zhou, Feng Zhang
Summary: The effect of grain boundary stability on the properties of Cu-Ni nanocrystalline alloy was investigated by molecular dynamics simulations. It was found that a more stable grain boundary leads to a higher energy barrier for deformation mechanisms and requires more force to hinder atomic slip in the grain boundary. The material reaches its highest strength when the homogeneous segregation degree of nanograined metals is about 0.9. Additionally, the binding energy between dislocations and grain boundaries was studied comprehensively and deeply for the first time using molecular dynamics simulation.
MATERIALS TODAY COMMUNICATIONS
(2023)
Review
Food Science & Technology
Shuailing Yang, Hui Xu, Jie-Hua Chen, Bin Liu, Ka-Wing Cheng
Summary: In recent years, there has been increasing interest in microalgal protein (MP), but its potential applications in the food industry have not been fully realized. This review evaluates the safety aspects, potential production strategies, and technologies of about 30 microalgal species commonly used for human consumption. The nutritional, biological, and techno-functional properties of MP are summarized, and challenges facing the industry are addressed. The review highlights the need for low-cost cultivation strategies, efficient protein purification techniques, and exploration of novel applications for MP.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Kai Zhao, Zhihong Ma, Li Yin, Bin Hui, Han Si, Xinlin Tong, Huidong Tang, Peng Cao, Saifang Huang
Summary: This paper reports a highly efficient blue-emitting phosphor with superior thermal stability, which has great potential for solid-state lighting applications.
INORGANIC CHEMISTRY FRONTIERS
(2023)
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.
