Article
Materials Science, Multidisciplinary
Kun Zhang, Yang Wang, Wanhao Zhang, Zheng Hu, Bingchen Wei, Yihui Feng
Summary: The phase stability and crystallization behavior of ZrTiHfCuBeNi MG irradiated at high temperature were studied, revealing the random appearance and aggregation of nanocrystals at low fluences, formation of non-edge-on faulted dislocations between neighboring grains due to irradiation-induced stress, and delays in the first pop-in events post-irradiation attributed to structural rearrangement and nanocrystal precipitation.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Instruments & Instrumentation
L. Shao, D. Chen, A. Zare, D. A. Lucca
Summary: Ion bombardment leads to a decrease in nanocrystallization temperature of metallic glasses and the temperature at which nanocrystals start to form is inversely related to the ion fluence. Positive (excessive) free volume is introduced near the surface region following ion bombardment, resulting in a decrease in glass transition temperatures and crystallization temperatures.
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
(2021)
Article
Materials Science, Ceramics
Tuo Wang, Lianshun Zhang, Qiqi Hou, Qi Hao, Jichao Qiao
Summary: The plasticity of Fe75Mo5P13C7 BMG can be improved by annealing at low temperature due to nano-crystallization and remaining free volume. The correlation of plasticity with micro-structure, relaxation, and free volume characteristic varies in Fe75Mo5P13C7 BMG with its annealed state under different temperatures. The plasticity will be largest when the ratio of nanocrystals is equivalent to the free volume.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Physical
Qi Jiang, Peilei Zhang, Jie Tan, Zhishui Yu, Yingtao Tian, Songyun Ma, Di Wu
Summary: In this study, Fe-based bulk metallic glass was successfully produced using selective laser melting, with optimized parameters resulting in high relative density and amorphous rate samples. The analysis revealed the presence of various crystalline phases in the heat affected zone, and heat treatment was utilized to study the crystallization behavior of the amorphous phase. Variation in hardness was observed among different grain regions, with the highest hardness found in the amorphous phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Physics, Multidisciplinary
Wafa Boukhemkhem, Mahmoud Izerrouken, Matteo Ghidelli, Thomas Pardoen, Ali Sari, Abdel Yazid Khereddine, Ali Meftah
Summary: Metallic glass films are potential coatings in the nuclear field, but their response to irradiation needs further research. Zr70Ni30 metallic glass films were irradiated by 0.71MeV/u(129)Xe(23+) ions, and changes in structure, morphology, and mechanical properties were studied. The irradiation increased surface smoothening and corrosion resistance. AFM data showed that the surface morphology evolution was due to a transition between viscous flow and evaporation-condensation mechanism. The amorphous structure remained unaffected after irradiation. Nanoindentation revealed softening initially, followed by a slight increase in hardness and Young's modulus. At a critical dose of 0.008 dpa, the hardness increased. The inelastic thermal spike model predicted a track with a radius of 7 nm.
Article
Chemistry, Physical
M. -N. Avettand-Fenoel, M. Marinova, R. Taillard, Wei Jiang
Summary: Fe64B24Y4Nb6 metallic glass and its bulk counterpart were characterized using various methods, showing high glass forming ability and thermal stability. After crystallization, the bulk alloy contains multiple phases while the ribbon contains additional yttria. Different mechanical behaviors were observed between the amorphous and fully crystallized alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
M. A. Yousfi, H. Zbidi, K. Hajlaoui, N. H. Alrasheedi, A. M. Jorge Junior
Summary: The variation of free volume (Delta Vf) of hydrogenated Zr57Al10Cu15.4Ni12.6Nb5 metallic glasses ribbon was investigated using nanoindentation tests and differential scanning calorimetry (DSC). The results show that the free volume gradually increases with the charging time of hydrogen, leading to a softening of the metallic glasses for an appropriate hydrogen content.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
J. W. Lv, D. W. Yin, F. L. Wang, Y. J. Yang, M. Z. Ma, X. Y. Zhang
Summary: Sub-T-g annealing improves the compactness and expands the supercooled liquid region of Ti33Zr30Cu9Ni5.5Be22.5 BMG. It decreases the glass transition activation energy and increases the crystallization activation energy. Isothermal crystallization time extends and the process is inhibited after annealing, while the Avrami indices indicate that the growth process is mainly diffusion-controlled and not influenced by sub-T-g annealing.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Chemistry, Applied
Francesco D'Acierno, Ryutaro Ohashi, Wadood Y. Hamad, Carl A. Michal, Mark J. MacLachlan
Summary: Chiral nematic and iridescent cellulose nanocrystal films with different monovalent cations exhibit high thermal stability during annealing, yet experience reductions in iridescence, birefringence, and transparency, along with formation of degradation products. Despite these changes, the films show potential for applications as temperature indicators and photonic devices.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Assia Zennaki, Latifa Zair, Khadidja Arabeche, Lina Benkraled, Ulrich Maschke, Abdelkader Berrayah
Summary: This study investigated the effects of annealing temperature and time on the crystalline phase transition in PLA using DSC and DMA. A small exothermal peak was observed at 130 degrees C, indicating the disorder-to-order phase transition, when the sample was annealed at 80 degrees C for 10-30 hours. The sample annealed at 90-110 degrees C showed a double melting behavior, suggesting the alpha'-alpha phase transition. DMA results showed a significant increase in the glass modulus at 80 degrees C for 3 hours, followed by an improvement at 120 degrees C for all samples. These findings suggest that the improvement in E-g is correlated with the increase in crystallinity and the alpha'-alpha phase transition.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Ceramics
Chen Chen, Yanzhou Fan, Weiwei Zhang, Hang Zhang, Ran Wei, Shaokang Guan, Tan Wang, Tao Zhang, Fushan Li
Summary: This study investigated the effects of adding Oxygen to Zr50Ti4Y1Al10Cu25Ni7Co2Fe1 complex multicomponent bulk metallic glass on its microstructure, thermal stability, and mechanical properties. It was found that Oxygen promoted the formation and growth of nanocrystals, leading to a change in the structure of the nanocrystalline phase. Interestingly, even at high Oxygen concentrations, the alloy still exhibited excellent resistance to Oxygen-induced brittleness.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Ziya Ozgur Yazici, Aytekin Hitit, Hakan Sahin, Muhammet Emir Kara
Summary: The non-isothermal crystallization behavior of the high tungsten and boron content amorphous (Ni51W31.6B17.4)(75)Co-25 alloy was studied. The alloy undergoes three-step crystallization according to continuous heating DSC analysis. The thermal stability of the alloy is higher than other Ni-based alloys. The continuous heating transformation diagram is consistent with the phases detected in isothermal heat treatments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Yuanyuan Wang, Aimin Wang, Hong Li, Haifeng Zhang, Zhengwang Zhu
Summary: Glass forming ability is crucial for the processing and application of metallic glasses. This study investigates the thermodynamic properties of TiZr-based alloys and shows that the glass forming ability can be improved through minor alloying.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Dandan Liang, Qiang Chen, Yinghao Zhou, Xiaodi Liu, Yuanfei Cai, Qiong Zhou, Biao Huang, Ergeng Zhang, Jun Shen
Summary: The microstructure, electrochemical responses, and passive film characteristics of FeCrMoWCBY bulk metallic glasses (BMGs) under Ar+ irradiation were studied. The BMGs maintained an amorphous structure and showed excellent corrosion resistance in 1 mol/l HCl solution at high irradiation fluence. With increasing irradiation fluence, crystal-like clusters and nanocrystals precipitated from the exterior amorphous matrix, leading to the destruction of passive films and a weakened anti-corrosion capacity. This finding facilitates the potential application of Fe-based BMGs under extreme nuclear-irradiated conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Microscopy
Yu Jin, Charles W. Bond, Russell L. Leonard, Yuzi Liu, Jacqueline A. Johnson, Amanda K. Petford-Long
Summary: Thermal annealing has a significant impact on the structure, composition, optical transmittance, and thickness of ZLANI glass. It can induce structural evolution and increase transmittance.
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.