Letter
Materials Science, Multidisciplinary
Jing Bai, Die Liu, Jianglong Gu, Xinjun Jiang, Xinzeng Liang, Ziqi Guan, Yudong Zhang, Claude Esling, Xiang Zhao, Liang Zuo
Summary: The Ni43.75Mn37.5In12.5Co6.25 alloy obtained by spark plasma sintering (SPS) technique exhibits a lower martensitic transformation temperature than the as-cast alloy, along with improved mechanical and magnetic properties.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
J. D. Navarro-Garcia, J. L. Sanchez Llamazares, J. P. Camarillo-Garcia
Summary: In this study, nearly 98% dense samples were successfully fabricated using polycrystalline melt-spun ribbons of the magnetocaloric Ni50Mn37Sn13 Heusler alloy via spark plasma sintering. The consolidation process preserved the structural and microstructural properties of the ribbons. The sintered sample showed a moderate shift in martensitic transformation temperature, as well as higher maximum entropy change values compared to the precursor ribbons.
Article
Chemistry, Physical
Paulo La Roca, Javier Lopez-Garcia, Vicente Sanchez-Alarcos, Vicente Recarte, Jose Alberto Rodriguez-Velamazan, Jose Ignacio Perez-Landazabal
Summary: In this study, a Cu doped NiMnInCo metamagnetic shape memory alloy with low thermal hysteresis and high cooling capacity was designed. The induced L21 ordering process enhanced the magnetization of the austenite without affecting the transformation temperatures, resulting in improved magnetocaloric effect, reversibility, and refrigeration capacity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Manufacturing
Erica Stevens, Katerina Kimes, Daniel Salazar, Amir Mostafaei, Rafael Rodriguez, Aaron Acierno, Patricia Lazpita, Volodymyr Chernenko, Markus Chmielus
Summary: Magnetocaloric (MC) materials are a focus for solid state magnetic refrigeration, with additive manufacturing showing promise for fabrication. The study printed and sintered a Ni49.5Mn19.1Cu6.6Ga24.8 alloy, demonstrating excellent magnetocaloric characteristics.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Yan Feng, Jiayang Gao, Mengmeng Zhou, Haibo Wang
Summary: The influence of Fe substitution on the mechanical properties and elastocaloric effect in Ni50Mn36-xIn14Fex ferromagnetic shape memory alloys has been studied. Iron doping improves the mechanical properties and results in a large elastocaloric effect.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Chemistry, Physical
Longsha Wei, Xuexi Zhang, Weimin Gan, Chao Ding, Chunfeng Liu, Lin Geng, Yiwu Yan
Summary: A polycrystalline Ni50.4Mn27.3Ga22.3 alloy with <001> texture was prepared by conventional casting, showing enhanced magnetocrystalline anisotropy after superelastic training. The alloy exhibited both conventional magnetocaloric effect and inverse effect under different magnetic fields, indicating promising potential as magnetic refrigerants.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
Yongdong Zhua, Haicheng Xuana, Jincai Su, Fenghua Chen, Kewei Zhang, Peide Han, Junwei Qiao
Summary: In this study, as-cast Ni-Mn-Sn alloys were prepared by direct cooling solidification, which improved the mechanical properties and broadened the martensitic transformation temperature range. The addition of Fe atoms further optimized the mechanical performance. The as-cast alloys exhibited good elastocaloric performance with a wide adiabatic temperature variation range.
Article
Materials Science, Multidisciplinary
Wanyuan Gui, Yuhai Qu, Yuxian Cao, Yunzhi Zhao, Chenxu Liu, Qing Zhou, Jie Chen, Yahui Liu
Summary: This study investigates the effect of Tb substitution for Ni on the properties of Ni-Mn-Sn alloys. The results show that increasing Tb content can enhance the martensitic transformation temperature, mechanical properties, and cyclic stability of elastocaloric effect in the alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Debottam Goswami, Gaurav Potnis, Santanu Chattopadhyay, Jayanta Das
Summary: The presence of austenite and its magnetostructural transition to martensite in Ti doped Ni-Co-Mn-Sn textured ribbons is reported, leading to a large magnetocaloric effect at room temperature. The as-spun ribbons exhibit significant isothermal entropy change, relative cooling power, and adiabatic temperature change even with a relatively low magnetic field change of 2 T.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Xiaoliang Zhang, Zongbin Li, Bo Yang, Haile Yan, Yudong Zhang, Claude Esling, Xiang Zhao, Liang Zuo
Summary: This study investigates the reverse transformation from deformed martensite to austenite in a Ni50Mn30Ga20 alloy, revealing that it may not conform to the transformation crystallography of self-accommodated martensite. It involves more crystallographic routes and higher lattice discontinuity to resume the crystallographic orientation of austenite due to the activation of new twinning systems in the deformed martensite. Understanding the reverse transformation of deformed martensite is important for comprehending the shape memory behavior and the crystallographic reversibility of martensitic transformation.
Article
Chemistry, Physical
B. Rodriguez-Crespo, D. Salazar, S. Lanceros-Mendez, V Chernenko
Summary: This study introduces a method for the fabrication of magnetic cooling materials using room-temperature ink printing technology. By incorporating a polymer binder and powder with tunable magnetic cooling properties, 2D printed films were successfully produced without the need for subsequent heat treatment. The field-induced adiabatic temperature measurements showed that the printed samples exhibited the same magnetic cooling effect as the ribbon, indicating the promising application potential of room-temperature ink printing technology in cooling microdevices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
A. Deltell, Abd El-Moez A. Mohamed, P. Alvarez-Alonso, M. Ipatov, J. P. Andres, J. A. Gonzalez, T. Sanchez, A. Zhukov, M. L. Escoda, J. J. Sunol, R. Lopez Anton
Summary: Fe substitution for Mn in Ni50Mn36-xFexSn14 alloys reduces the characteristic temperatures of the martensitic transformation and the Curie temperature of the austenite phase linearly. The applied magnetic field has a negligible effect on the martensitic transition temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Physics, Applied
Fengqi Zhang, Ivan Batashev, Niels van Dijk, Ekkes Bruck
Summary: In this study, it is found that introducing interstitial B atoms can effectively decrease thermal hysteresis and improve saturation magnetization in Ni-(Co)-Mn-Ti Heusler alloys, thereby enhancing the magnetocaloric effect and making it competitive.
PHYSICAL REVIEW APPLIED
(2022)
Article
Chemistry, Physical
P. Sivaprakash, S. Arumugam, S. Esakki Muthu, D. M. Raj Kumar, C. Saravanan, N. V. Rama Rao, Y. Uwatoko, R. Thiyagarajan
Summary: The effect of Si substitution on the Mn site in Ni47Mn40-xSixIn13 alloy was investigated for its structure, electrical, magnetic, and magnetocaloric properties. Increasing Si content lowered both the Curie transition and martensitic phase transition temperatures, leading to exchange bias phenomenon at lower temperatures. The maximum magnetic entropy change decreased with higher Si content, indicating a decrease in magnetocaloric effect.
Article
Materials Science, Multidisciplinary
J. D. Navarro-Garcia, J. P. Camarillo-Garcia, F. Alvarado-Hernandez, J. L. Sanchez Llamazares, H. Flores-Zuniga
Summary: The investigation focuses on caloric effects associated with first-order structural transitions in Heusler-type alloys, with the aim of utilizing them as refrigerants in solid-state cooling devices. By manipulating the texture and grain orientation of the alloy samples, significant improvements in magnetocaloric and elastocaloric effects are achieved.
Article
Metallurgy & Metallurgical Engineering
Xinzeng Liang, Jing Bai, Jianglong Gu, Ziqi Guan, Haile Yan, Yudong Zhang, Claude Esling, Xiang Zhao, Liang Zuo
Summary: The study investigates the crystal structure and magnetism of Cu-doped Ni-Mn-In-Co alloy martensite using first-principles calculations. Cu substitution at different atomic positions induces changes in crystal structure and magnetism, with Cu replacing Ni having a significant impact on thermal hysteresis.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Chemistry, Physical
Bo Yang, Zongbin Li, Haile Yan, Yudong Zhang, Claude Esling, Xiang Zhao, Liang Zuo
Summary: Epitaxial Ni-Mn-Ga thin films with <1 1 0>(A) orientation were studied, showing 7M martensite and twin interfaces parallel to the substrate surface.
Article
Chemistry, Physical
Lanyu Guo, Zongbin Li, Jiaxing Chen, Bo Yang, Haile Yan, Xiang Zhao, Claude Esling, Liang Zuo
Summary: Enhanced spontaneous magnetostrain was achieved in a directionally solidified alloy through microstructure texturing and superelastic training. The study provides an important solution for the application of magnetic shape memory alloys.
Article
Materials Science, Multidisciplinary
Zhen Chen, Daoyong Cong, Yang Ren, Yin Zhang, Haile Yan, Li You, Chao Song, Shaohui Li, Yuxian Cao, Shengwei Li, Changchang Zuo, Li Wang, Zhiyong Gao, Wei Cai, Yandong Wang
Summary: In this study, a high-performance, cost-effective high-temperature shape memory microwire with exceptional superelasticity, one-way and two-way shape memory effects has been developed using the strategy of creating an oligocrystalline structure. This microwire shows great potential for high-temperature actuation, sensing, and energy conversion applications.
NPG ASIA MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Hai-Le Yan, Xiao-Ming Huang, Claude Esling
Summary: This review comprehensively presents the recent research progress of Ni-Mn-In-based magnetic shape memory alloys, including crystallographic characterization and functional behaviors. It also discusses the main bottlenecks hindering technical development and possible solutions.
FRONTIERS IN MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
S. Jiang, R. Lin Peng, K. An, H. L. Yan, X. Zhao, L. Zuo, W. B. Cui, C. Esling, N. Jia
Summary: In this study, the evolution of dislocations in laminated metallic composites (LMCs) was quantitatively investigated. The results showed that the dislocation evolution is independent of the initial layer thickness within the micron scale. The GND density in Ti increases significantly during the uniform elongation stage, while that in Nb remains nearly unchanged. Additionally, the total dislocation density in Ti increases rapidly, while in Nb, it gradually saturates in the late strain hardening stage. Nb bears more stress and dominates the global hardening, while GND activation in Ti contributes significantly to the strengthening induced by heterophase interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Zhufeng He, Yanxin Guo, Lifang Sun, Xianjun Guan, Shuang Jiang, Yongfeng Shen, Wen Yin, Xiaoli Zhao, Zhiming Li, Nan Jia
Summary: This study presents a universal strategy for designing ultrastrong and ductile face-centered cubic (fcc) multicomponent alloys by introducing interstitial-driven local chemical order (LCO) through simple thermomechanical processing. Fine laths containing interstitial-driven LCO domains have been observed in a prototype FeMnCoCrN alloy, resulting in an ultra-high yield strength of 1.34 GPa and a uniform elongation of 13.9%. This design strategy has also been successfully applied to a multicomponent austenitic steel, suggesting its potential in developing high-performance fcc materials at low cost.
Article
Nanoscience & Nanotechnology
S. H. Sun, M. H. Cai, H. Ding, H. L. Yan, Y. Z. Tian, S. Tang, Peter Hodgson
Summary: This study reports a tri-phase hierarchical lamellar structure to achieve a balance between ultra-high yield strength and high ductility in a Si-Al added medium Mn lightweight TRIP/TWIP steel. By subjecting the warm-rolled sample to small cold rolling and low-temperature tempering, a nano-scale twins and martensitic laths were obtained in the austenitic matrix along with the hard delta-ferrite and nano-precipitates. The tempered sample exhibited a yield strength of 1403 MPa, which was 370 MPa higher than the warm-rolled counterpart. The propagation of plastic strain was confined by the hard zone (delta-ferrite), resulting in an intrinsic hetero-deformation induced (HDI) strengthening effect. The large ductility of 30% was attributed to the elongation of the yield point and enhanced strain hardening after the Luders strain, which were closely associated with HDI hardening and additional TRIP/TWIP effects.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Cong Liu, Zongbin Li, Honglin Wang, Yueping Wang, Bo Yang, Haile Yan, Daoyong Cong, Xiang Zhao, Liang Zuo
Summary: This study demonstrates the large elastocaloric effect and long-term cyclic stability achieved in a Huesler-type Co51V33Ga16 polycrystalline alloy. The alloy shows large adiabatic temperature change values over a wide temperature range and maintains a low degradation rate during superelastic cycles, outperforming previously reported Huesler-type alloys.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xiao-Ming Huang, Ying Zhao, Hai-Le Yan, Shuai Tang, Yiqiao Yang, Nan Jia, Bo Yang, Zongbin Li, Yudong Zhang, Claude Esling, Xiang Zhao, Liang Zuo
Summary: In this study, a first-principles-based method was used to estimate Delta V/V-0 for Ni-Mn-based alloys, and the substitution of Ga for In was found to effectively increase the value of Delta V/V-0 for Ni-Mn-In alloys. By reducing the negative contribution of magnetic entropy change and introducing strong crystallographic texture, an outstanding elastocaloric prototype alloy, Ni-50(Mn28.5Cu4.5)(In14Ga3), was successfully fabricated, exhibiting a huge Delta T-ad of -19 K and a large specific adiabatic temperature change of 67.8 K/GPa at room temperature. The proposed first-principle-assisted framework opens up possibilities for efficient tailoring of Delta V/V-0 and the design of advanced elastocaloric refrigerants.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xiaowen Hao, Hongwei Liu, Bo Yang, Jie Li, Zhe Li, Zongbin Li, Haile Yan, Yudong Zhang, Claude Esling, Xiang Zhao, Liang Zuo
Summary: It was investigated the effects of hydrostatic pressure on magnetostrictive behavior in MnCo0.92Ni0.08Si alloy. The results showed that the saturation magnetostriction (at 30,000 Oe) can be increased from 577 ppm to 5034 ppm by the hydrostatic pressure of 3.2 kbar at 100 K. Moreover, under a magnetic field of 20,000 Oe, the reversible magnetostriction was improved from 20 ppm to 2112 ppm when a hydrostatic pressure of 6.4 kbar was applied at 70 K. In conclusion, the magnetostrictive effect of the MnCo0.92Ni0.08Si compound is strongly influenced by external hydrostatic pressure.
Article
Physics, Applied
Jian Liu, Ze-Ming Fan, Han-Yang Qian, Hai-Le Yan
Summary: This Letter reports on a polycrystalline Ni44.1Co5.0Mn36.1In13.4Cu1.4 alloy with a large magnetic field-induced stress of 14.4 MPa/T and a low stress hysteresis of 50 MPa, making it a promising candidate for high-energy output and high-efficient actuators. The large magnetostress is mainly attributed to the substantial transformation entropy change of 15.4 J/(kg K) and the high sensitivity of phase transformation temperature to the magnetic field of -9.2 K/T. Additionally, the possibility of enhancing transformation reversibility and expanding the cooling temperature window through the multicaloric strategy has been explored.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Zengyu Ni, Ziyue Li, Rui Shen, Siyuan Peng, Haile Yan, Yanzhong Tian
Summary: In this study, a single-phase fine grained (FG) structure was prepared in CoCrNiV alloy by rolling and heat treatment. The characteristics of its deformation microstructures and mechanical properties were investigated using SEM and TEM. The results show that the alloy exhibits high strength and exceptional ductility, which are attributed to the FG structure and severe lattice distortion induced by V addition, and the stable strain-hardening ability facilitated by dislocations and stacking faults.
Article
Chemistry, Physical
Hao Yang, Jin-Han Yang, Ying Zhao, Han Ma, Yanzhong Tian, Minghui Cai, Shuai Tang, Yandong Liu, Xiang Zhao, Hai-Le Yan, Liang Zuo
Summary: The impacts of Mn alloying on lattice stabilities, magnetic properties, electronic structures, and phase transitions in Fe16-xMnx alloys (x = 0, 1, and 2) have been studied using first-principles calculations. The results show that Mn prefers ferromagnetic and antiferromagnetic interactions in the bcc and fcc phases, respectively. The magnetic moment of Mn is smaller and larger than that of Fe in the bcc and fcc phases, respectively. The site occupations of Mn in different phases can be understood from the electronic density of states near the Fermi energy, suggesting the possibility of element redistribution during phase transitions. The antiferromagnetism is identified as the main reason for the enhanced stability of the fcc phase by Mn alloying.
Article
Chemistry, Physical
Rui Shen, Zengyu Ni, Siyuan Peng, Haile Yan, Yanzhong Tian
Summary: This study investigated the effects of adding different fractions of V on the mechanical properties of a non-equiatomic CoCrNi alloy. It was found that lower V content led to deformation mechanisms of dislocation slip, stacking faults, and deformation-induced HCP phase transformation, while higher V content resulted in dominant deformation patterns of dislocation slip and stacking faults. Addition of V increased the stacking fault energy (SFE) and lattice distortion, resulting in a significant increase in yield strength and a non-monotonic change in strain-hardening behavior.
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.
