Article
Materials Science, Coatings & Films
Qianqian Wang, Xudong Bai, Bo Sun, Jian Liu, Zhihai Cai, Xiubing Liang, Baolong Shen
Summary: The research shows that the amorphous/crystalline composite coating has high hardness, high fracture strength, and low wear loss due to its composition close to eutectic point, high amorphous content, and refined crystalline structures.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Qingjie Li, Dandan Qin, Yunzhuo Lu, Xuemei Zhu, Xing Lu
Summary: Laser additive manufacturing (LAM) is a promising technology for processing bulk metallic glass (BMG), but the inherent brittleness of Fe-based BMGs has always been a problem. To solve this, 316L stainless steel is used to form Fe-based BMG composites (BMGCs), which greatly improves the plastic strain and achieves a record-breaking achievement.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Lei Zhang, Jianfei Sun, Hongbo Fan, Zhiliang Ning, Yongjiang Huang
Summary: In metallic glass composites (MGCs), the presence of crystalline phases leads to structural heterogeneity in the amorphous matrix near the crystalline phase, resulting in differences in mechanical properties at the micro- or nano-scale near the crystalline/matrix interface. This study quantitatively relates the pile-up height to the activation volume of shear transformation zones (STZs) to characterize this difference using nanoindentation technology. Molecular dynamics simulations were conducted to investigate the activation behaviors of STZs during the nanoindentation process of the amorphous matrix, and the influences of crystalline phases on the deformation behaviors of the amorphous matrix near the interface in MGCs were analyzed in detail.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Ceramics
Chunyan Li, Jianshu Zhai, Lin Tian, Yu Lu, Xiaocheng Li, Shengzhong Kou
Summary: The Fe-Cr-Mo-B-C coating was prepared on 45 steel using laser cladding. The effects of different process parameters on the properties of the coatings were analyzed. The increase of laser power or overlap rate resulted in more serious crystallization, porosity, and even cracks, reducing the overall properties of the coatings. The microhardness of the coatings was determined by the amorphous phase and hard phases B6Fe23 and Cr2B. The optimal conditions for laser cladding were identified as a power of 1400 W with an overlap rate of 30%.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Haolun Song, Fengchun Jiang, Chunhuan Guo, Qi Sun, Haixin Li, Zhenlin Yang, Liyu Li, Mingxia Diao, Zhichao Zhang
Summary: The effect of ultrasonic vibration on the evolution of microstructures and microhardness of Fe-based crystal-line/amorphous composite coatings prepared by laser cladding technique was investigated. The results showed that ultrasonic vibration increased the content of amorphous phase, inhibited the growth of columnar crystals at the interface, reduced the average length of columnar crystals, and improved the microhardness of the coating.
Article
Chemistry, Physical
Yongfeng Qian, Hu Huang, Minqiang Jiang, Jiwang Yan
Summary: Fe-based metallic glasses with micro/nano-structures were fabricated on the surface by nanosecond pulsed laser irradiation technology, resulting in distinguished microstructures such as nanoparticles and network nanostructures. The formation mechanisms of these structures were attributed to laser-induced element enrichment and diffusion and connection of nanoparticles under the combined influence of recoil pressure and surface topography.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Xinyu Zhang, Weiyan Lu, Hui Guo, Fengping Huo, Haitao Chen, Keqiang Qiu, Baijun Yang, Jianqiang Wang
Summary: The effect of doping ceramic reinforcing particles during laser cladding technology has been rarely studied for amorphous alloy coatings. A crack-free Fe-based amorphous/crystalline composite coating with good tribological properties was successfully prepared on the surface of 40Cr steel by varying the content of WC-14Co addition. The addition of WC-14Co particles led to the suppression, disappearance, and reformation of cracks, ultimately achieving a crack-free state at 5 wt% addition.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Ahmad Saadati, Mehdi Malekan, Farzad Khodabakhshi, Gerhard Wilde, Adrian P. Gerlich
Summary: This study successfully bonded a copper-based bulk metallic glass with commercial pure aluminum using dissimilar diffusion welding method, without crystallizing the metallic glass and thus avoiding deterioration of its properties.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Alessandro Troglia, Victor Vollema, Silvia Cassanelli, Erik van Heumen, Jorik van de Groep, Anne de Visser, Roland Bliem
Summary: Tuning the electronic, chemical, mechanical, and optical properties of solids without altering their composition represents a new paradigm in designing functional and sustainable materials. This study demonstrates significant differences in the optical, electronic, and corrosion properties of CuZr by engineering the level of structural disorder deliberately and reproducibly.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Coatings & Films
Peilei Zhang, Qi Zhang, Hua Yan, Zhishui Yu, Jin Yang, Jieshi Chen, Di Wu, Haichuan Shi, Yingtao Tian, Songyun Ma, Weisheng Lei
Summary: In this research, an amorphous coating of Fe-Cr-Mo-C-B-Y metallic glass was developed on a steel substrate through laser surface treatment. The microstructure and phase distribution of the coating were analyzed, as well as its mechanical properties such as microhardness and abrasion resistance. The study found that the coating thickness, microstructure, and mechanical properties were influenced by the laser parameters used during the process.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Xin Gu, Xiao Wang, Jiankun Cui, Youjuan Ma, Haokun Zhang, Keyang Wang, Jiaxin Lu
Summary: This study used high strain rate laser for composite microforming, exploring the influence of laser energy and soft film thickness on forming accuracy, morphological characteristics, thickness distribution, and mechanical properties. Results showed that increasing laser energy improved forming accuracy but decreased forming depth, while better forming accuracy was achieved with smaller soft film thickness.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Biophysics
Afsaneh Esmaeili, Seyed Amir Ghaffari, Maryam Nikkhah, Farshid Malek Ghaini, Farhad Farzan, Soheila Mohammadi
Summary: The study demonstrates that a metallic glass coating formed on stainless steel substrate exhibits superior biocompatibility, showing higher cell attachment and blood compatibility.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Engineering, Multidisciplinary
O. Aksenov, A. A. Fuks, A. S. Aronin
Summary: A method for measuring adhesion between the glass shell and the metallic nucleus of an amorphous microwire was developed. The study revealed that the adhesion value is 270 MPa, and annealing can lead to a more than 2-fold increase in adhesion. The effect of adhesion on the stress state and coercivity of microwires under tension was analyzed.
Article
Materials Science, Multidisciplinary
Han-Wen Zheng, Xiao-Yong Shu, Yang Li, Jian-Ping Zhao
Summary: The newly prepared Fe-based amorphous-crystalline composite Fe55Cr15Mo15Ni10W5 exhibits good ductility with a hardness about 75% higher than that of the master ingot. The mechanical properties obtained from nanoindentation and molecular dynamics simulation are in good agreement, confirming the composite's excellent performance at the nanoscale.
Article
Chemistry, Multidisciplinary
Shun -Xing Liang, Marlene E. R. Reusmann, Kateryna Loza, Swen Zerebecki, Lai -Chang Zhang, Zhe Jia, Sven Reichenberger
Summary: The laser synthesis and processing of colloids have shown promising progress in preparing amorphous and defect-rich nanoparticles. This study focuses on the synthesis of partially amorphous oxide nanoparticles by pulsed laser ablation in water. The duration and number of laser pulses allow precise control of the amorphization process. The results suggest that the laser fluence plays a crucial role in controlling amorphization. The amorphization of metal oxides is linked to size reduction and oxidation effects. This work will contribute to future studies on laser-generated nanoparticles for various applications.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Automation & Control Systems
Christopher Katinas, Tyler Throop, Yung C. Shin, Alex Frank
Summary: This paper presents an experimental and simulation analysis of laser cladding of Stellite-6 on mild steel and HY80 substrates. The study reveals the impact of parameter adjustment on the cladding effect during the process.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Mohamed G. Elkhateeb, Yung C. Shin
Summary: By utilizing MSG to simulate compression and tensile behaviors, the predicted results matched well with experimental data, indicating the presence of martensite as the reason behind the high strength and reduced ductility in AMed Ti6Al4V. Moreover, considering the microstructure in SG allowed the MSG simulations to align with experiments, showing reductions in strength and improvements in maximum elongations in AMed+heat treated Ti6Al4V due to grain coarsening and absence of martensite.
MATERIALS & DESIGN
(2021)
Article
Engineering, Civil
Hongguang Liu, Yung C. Shin
Summary: Steels, being the most commonly used multi-phase materials in the industry, have their mechanical behaviors determined by microstructure, composition, and phase fractions. A novel multi-scale approach based on predicting the material behaviors of multi-phase steels using phase fractions has been introduced, which allows for quick and accurate determination of material behavior.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Shunyu Liu, Kyung-min Hong, Yung C. Shin
Summary: The study presents a novel 3D Cellular Automata-Phase Field (CA-PF) model for accurately predicting dendrite formation in a large domain, combining the efficiency of CA model with the fidelity of PF model. By coupling thermodynamic and kinetic calculations into the PF component, the model can handle microstructure evolution of complex multi-component alloys.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Crystallography
Shunyu Liu, Yung C. Shin
Summary: In this study, a thermodynamically consistent multi-phase and multi-component phase-field (PF) model was developed for predicting the competitive growth of α grains during Ti6Al4V solidification in the directed energy deposition (DED) process. The model accurately predicted the evolution of Al and V solutes concentrations separately for the first time, matching the phase diagrams well. The PF modeling successfully predicted the elongated α grains of columnar shape during Ti6Al4V solidification, with growth patterns highly consistent with experimental results.
JOURNAL OF CRYSTAL GROWTH
(2021)
Article
Automation & Control Systems
Neil S. Bailey, Yung C. Shin
Summary: In this study, a hybrid Cellular Automata/Phase Field model and a solid-state phase transformation model were used to predict microstructure evolution and solid-state phase transformation during laser direct deposition. The results showed that the microstructure of the target track was strongly influenced by heat, and the predicted hardness values were consistent with experimental results.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Mohamed G. Elkhateeb, Shunyu Liu, Yung C. Shin
Summary: In this paper, a computationally efficient multiscale framework based on XMSG is proposed for predicting the mechanical properties of AM Ti6Al4V parts. It is shown that XMSG offers higher computational efficiency with the same level of accuracy compared to other conventional methods and is capable of predicting the tensile, compression, and anisotropic behavior of AM Ti6Al4V.
MECHANICS OF MATERIALS
(2022)
Article
Materials Science, Coatings & Films
Corbin M. Grohol, Yung C. Shin, Alex Frank
Summary: This study presents a method for depositing quench-sensitive age-hardening aluminum alloy clads without the need for solution heat treatment. The method involves using a high-powered diode laser and off-axis powder injection for melting the material. Quenching with liquid nitrogen immediately after the cladding process improves cooling rate and increases hardness response. The method was successfully demonstrated on aluminum alloy 6061 powder. In-situ liquid nitrogen quenching improved the clad hardness, and transmission electron microscopy revealed increased precipitate density as the reason for the hardness increase.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
V Harinarayana, Y. C. Shin
Summary: In this study, a comprehensive design and fabrication of a three-dimensional axisymmetric auxetic structure that exhibits uniform and axisymmetric transverse deformation under longitudinal compression loading is proposed. The design of the metamaterial is generated by revolving a two-dimensional parabolic curve along the axis of rotation and subsequently perforating the structure periodically with elliptical voids. The significance of the perforations is elucidated by comparing the metamaterial structure to a plain structure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Shunyu Liu, Corbin M. Grohol, Yung C. Shin
Summary: This paper demonstrates the effectiveness of utilizing the blown-powder additive manufacturing process, directed energy deposition (DED), for the design and synthesis of high entropy alloys (HEAs). Different microstructures of CoCrFeNiTi HEAs were successfully synthesized through a careful design of composition and particle size. The HEAs exhibited high oxidation resistance and hardness values, comparable to popular wear-resistant materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Thermodynamics
Akash Aggarwal, Yung C. Shin, Arvind Kumar
Summary: A predictive powder-bed model was developed to study the coupling between optical and thermo-hydrodynamical phenomena in the laser powder bed fusion process. Discrete element modeling was used to predict the configuration of powder particles, and thermo-fluidic simulations were conducted to investigate various aspects of the process. The model successfully incorporated factors such as laser power, scanning speed, beam spot diameter, and powder layer thickness to analyze melting modes and transient beam absorption.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Engineering, Electrical & Electronic
Bin Zhang, Yung C. Shin
Summary: An adaptive Gaussian mixture filter is proposed in this paper to accurately estimate the state distribution of highly nonlinear dynamic systems by refining Gaussian mixture models based on the local severity of nonlinearity.
Article
Engineering, Manufacturing
J. Lee, S. Akin, J. R. Walsh, M. B. G. Jun, H. Lee, Y. C. Shin
Summary: This study develops functionally gradient multi-layer coatings on the Nitinol surface for orthopedic implant applications. It aims to eliminate potentially toxic Ni ion release and improve biocompatibility. The coatings are manufactured using the direct energy deposition (DED) technique and have superior bonding strength due to their completely alloyed microstructure. A hydroxyapatite (HA) biomedical over-coating is also applied to enhance biocompatibility. The results show promising potential for the novel Nitinol structure in orthopedic and other implantable applications, with low Ni ion release rate and strong bonding strength.
PROGRESS IN ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Michael Porro, Bin Zhang, Akanksha Parmar, Yung C. Shin
Summary: This study develops a predictive model that estimates the mechanical properties of metal parts based on microstructural data. It demonstrates the efficacy of the model in predicting the relationship between grain size and shape features and mechanical properties.
INTEGRATING MATERIALS AND MANUFACTURING INNOVATION
(2022)
Proceedings Paper
Engineering, Mechanical
Ehsan Malekipour, Homero Valladares, Suchana Jahan, Yung Shin, Hazim El-Mounayri
Summary: Avoiding thermal abnormalities in powder bed fusion is essential to minimize the failure rate and manufacturing lead time of complex parts. Laser parameters such as power and speed significantly influence the temperature distribution within the layers. The use of artificial neural networks shows promise in correlating laser power with temperature distribution for improved control of the process.
THERMOMECHANICS & INFRARED IMAGING, INVERSE PROBLEM METHODOLOGIES, MECHANICS OF ADDITIVE & ADVANCED MANUFACTURED MATERIALS, AND ADVANCEMENTS IN OPTICAL METHODS & DIGITAL IMAGE CORRELATION, VOL 4
(2022)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)