Article
Materials Science, Coatings & Films
T. Zhao, S. Zhang, F. Q. Zhou, H. F. Zhang, C. H. Zhang, J. Chen
Summary: In-situ TiC reinforced titanium matrix composites coating was prepared on the surface of Ti6Al4V using plasma transfer arc welding. The coating exhibited dense structure, no porosity, and good metallurgical bond with the substrate. Different phases formed in the coating contribute to its high microhardness and resistance to wear and corrosion.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Optics
Tao Wang, Lei Zhu, Heyu Song, Hao Wang
Summary: WC-17Co/IN718 composites were successfully produced using the coaxial powder feeding laser cladding technology. The increase in WC-17Co content led to the precipitation of various phases and improved microhardness and wear resistance, but decreased electrochemical corrosion resistance.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Yingyi Zhang, Tao Fu, Laihao Yu, Fuqiang Shen, Jie Wang, Kunkun Cui
Summary: The oxidation behavior of Si-MoSi2 composite coating on TZM alloy at 1200℃ in air was investigated. The coated samples showed excellent oxidation resistance at medium temperature due to the formation of self-healing SiO2 protective layer and the dense structure of the coating.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
K. Sai Jyotheender, Manu Mathai, Surendra Kumar Makineni, Chandan Srivastava
Summary: ZnNi alloy coatings with low Ni content (1-4 wt.% Ni) were electrodeposited over mild steel. The addition of Ni changed the coating morphology, decreased the crystallite size, and shifted the basal plane texture. Zn-1.5 wt.% Ni coating exhibited significantly improved corrosion resistance, but the corrosion resistance decreased with higher Ni content (2.7 and 3.7 wt.% Ni). The high corrosion resistance of Zn-1.5 wt.% Ni coatings was attributed to the presence of basal texture, low coating strain, and stable γ-phase in the Zn matrix.
PHILOSOPHICAL MAGAZINE
(2023)
Article
Engineering, Biomedical
Qiangsheng Dong, Xingxing Zhou, Yuanjia Feng, Kun Qian, Huan Liu, Mengmeng Lu, Chenglin Chu, Feng Xue, Jing Bai
Summary: The study found that the DCPD coating on biomedical Mg can efficiently seal artificial scratches with anti-corrosive products, acting as both a physical barrier and a self-healing agent without the need for extra corrosion inhibitors. Additionally, the presence of Hank's solution promotes self-healing behavior by providing film-forming ions. These findings may lead to new opportunities for developing efficient self-healing coatings on biodegradable Mg implants.
BIOACTIVE MATERIALS
(2021)
Article
Chemistry, Physical
Yu Zhao, Changyi Wu, Shengfeng Zhou, Junjie Yang, Wei Li, Lai-Chang Zhang
Summary: Electrochemical measurements and microstructural analysis were conducted to study the corrosion behavior and formation mechanism in Ti-TiN composites produced by SLM and CP-Ti. Compared to CP-Ti, the Ti-TiN composites exhibit higher corrosion resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Kun Li, Zeyun Cai, Peng Du, Tao Xiang, Xinxin Yang, Guoqiang Xie
Summary: In this study, nano Fe particles reinforced Mg66Zn30Ca4 bulk metallic glass composites were prepared via spark plasma sintering, resulting in improved strength and corrosion resistance. The addition of Fe nanoparticles also promoted cell proliferation in vitro experiments, making the composites a promising candidate for degradable implant materials.
Article
Materials Science, Multidisciplinary
Xin Zhan, Dong Wang, Jiasheng Dong, Langhong Lou, Jian Zhang
Summary: The effect of coating degradation on the hot corrosion performance of coated alloys was studied at 900 degrees C in Na2SO4/NaCl salt. Degraded coatings were obtained through thermal exposure before the hot corrosion test. The results show that complete depletion of beta-NiAl phases in the coating delays the hot corrosion process due to the formation of an Al-rich interdiffusion zone (IDZ) after 900 degrees C thermal exposure, providing Al for the healing of the Al2O3 layer. However, the formation of a Cr-rich IDZ after 1000 degrees C thermal exposure fails to repair the Al2O3 layer, leading to aggressive corrosion of the alloy even though Cr has replaced Al in the corrosion process.
Article
Materials Science, Coatings & Films
Yulin Zhang, Fei Chen, You Zhang, Menghao Liu, Yajie Pang, Cuiwei Du
Summary: The duplex TiN-MAO coating was fabricated on TC17 alloy using a hybrid treatment method, and the corrosion and tribocorrosion performances of the bare and coated substrates were analyzed. The results showed that the duplex TiN-MAO coating exhibited superior electrochemical properties in reducing acid electrolyte and demonstrated the best corrosion resistance and wear resistance under cathodic protection.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Shuilong Huang, Qingjun Chen, Li Ji, Kan Wang, Guosheng Huang
Summary: Laser 3D printing was used to prepare two different types of amorphous coatings, and their morphology, amorphous content, and microstructure were investigated. The results showed that the coating deposited under air-cooled conditions had cracks on the surface, while the coatings with higher amorphous content exhibited higher hardness and corrosion resistance. Additionally, annealing treatment of the coatings reduced crack formation.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Zhiwei Li, Haoping Peng, Aijun Xie, Changjun Wu, Sibudjing Kawi, Jianhua Wang
Summary: The effect of ball-milling pretreatment on microstructure and corrosion of hot-dip galvanized coatings was investigated. The ball-milled sample exhibited a thinner alloy layer and absence of an outburst structure in the coating. The order of corrosion in the pickled sample was eta -> (eta + zeta) -> zeta, while in the ball-milled sample it was eta -> zeta. Compared to the pickled sample, the ball-milled sample with a flat zeta layer showed lower corrosion current density and higher polarization resistance.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
H. F. Zhang, S. Zhang, C. L. Wu, C. H. Zhang, X. L. Bai, X. Y. Sun, J. Chen
Summary: The WC-Co composite coating was successfully prepared on SS 316L using plasma arc welding technology. The composition, microstructure, and microhardness of the coating were analyzed. Corrosion behavior, including electrochemical corrosion, cavitation erosion, and erosion corrosion, was tested. The results showed that the WC-Co coating had excellent metallurgical bonding with the substrate, significantly increased microhardness, and improved corrosion resistance compared to SS 316L.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Subhadip Bhandari, Tarini Prasad Mishra, Martin Bram, Olivier Guillon, Devinder Yadav
Summary: Flash sintering of 8YSZ/NiO composites was studied, and it was found that the sintering atmosphere and NiO content strongly influenced the flash onset temperature and power dissipation. The current density could control the densification of the composites.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Bhaskarjyoti Das, Muralidhar Yadav, Sukumar Kundu, Tapendu Mandal
Summary: In this study, the corrosion behavior of turmeric-coated AZ51 alloy in a simulated bodily fluid was investigated and correlated using various characterization techniques. The results showed the presence of grains of the alpha-Mg alloy and precipitates of beta-Mg17Al12 in all the samples. The potentiodynamic polarisation investigation revealed that the DC-48 sample exhibited the highest corrosion resistance among all the samples. The mineralization study confirmed that the DC-48 sample had the maximum corrosion resistance due to the uniformity and compactness of the coating.
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Coatings & Films
Yixin Yang, Yuxin Li, Zhiguo Liang, Peikang Bai, Jinhao Nie, Siyuan Liu, Bowen Chen, Shouzheng Wei, Qingfeng Guan, Jie Cai
Summary: FeCrAlSi coatings were prepared using laser cladding technology and subjected to a continuous hot corrosion test in a eutectic 75 wt% Na2SO4 + 25 wt% K2SO4 salt at 800 degrees C in air. The FeCrAlSi coating consists of mainly the Fe-Cr solid solution, AlFe intermetallic compound and little FeAl2 phase, showing improved microhardness and tribological properties over the untreated substrate. The study revealed the formation of different stages of surface films and element diffusion behaviors during the hot corrosion process, ultimately forming a protective oxidation film.
SURFACE & COATINGS TECHNOLOGY
(2021)
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.