Article
Nanoscience & Nanotechnology
Limin Lai, Tianhao Liu, Xinghong Cai, Min Wang, Shengbiao Zhang, Wen Chen, Shengfeng Guo
Summary: The study introduces a series of low-cost refractory Mo-Co-B BMGs with enhanced GFA and high thermal stability, exhibiting exceptional hardness and Young's modulus.
SCRIPTA MATERIALIA
(2021)
Review
Materials Science, Multidisciplinary
H. R. Lashgari, M. Ferry, S. Li
Summary: Additive manufacturing technologies have opened up new possibilities for addressing the challenges of manufacturing bulk metallic glasses. Analyzing the application of emerging AM technologies to BMGs provides a scientific foundation for future development.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Alireza Ghorbani, Amirhossein Askari, Mehdi Malekan, Mahmoud Nili-Ahmadabadi
Summary: This article explores the glass-forming ability of bulk metallic glasses and the use of machine learning to predict their properties. The random forest method is found to be a reliable way to predict glass-forming ability, and the addition of characteristic temperatures improves the accuracy and efficiency of the model.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Ming Liu, Xiuzhu Han, Rui Zhao, Tong Lu, Wen Dong, Chaoqun Liao, Qi Zhang, Yonghao Sun, Yanzhi Dong, Jian Song, Wei Yao, Shaofan Zhao, Haiyang Bai, Weihua Wang
Summary: This study assessed the thermal stability of metallic glasses (MGs) under simulated space conditions and proposed rules for selecting MGs with better thermal stability for future space applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Y. C. Tang, G. T. Ma, N. Nollmann, G. Wilde, M. Zeng, C. H. Hu, L. Li, Chengying Tang
Summary: A comparative study was conducted on the thermal stability and kinetics of crystallization of melt-spun and bulk Pd77.5Cu6Si16.5 metallic glasses. The results showed that the Pd77.5Cu6Si16.5 amorphous alloys have excellent thermal stability, with the bulk metallic glass exhibiting better stability than the ribbon. The crystallization processes of both the ribbon and the bulk metallic glass were found to be controlled by volume nucleation with different nucleation rates, as indicated by the local Avrami exponent.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Review
Materials Science, Multidisciplinary
Cheng Zhang, Di Ouyang, Simon Pauly, Lin Liu
Summary: Bulk metallic glasses (BMGs) as metallic materials without long-range order have attracted significant attention from academia and industry in the past three decades. The emerging 3D printing technology provides a viable route to overcome the challenges inherent in conventional processing routes and expand the applications of BMGs.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2021)
Article
Multidisciplinary Sciences
Yuan Wu, Di Cao, Yilin Yao, Guosheng Zhang, Jinyue Wang, Leqing Liu, Fengshou Li, Huiyang Fan, Xiongjun Liu, Hui Wang, Xianzhen Wang, Huihui Zhu, Suihe Jiang, Paraskevas Kontis, Dierk Raabe, Baptiste Gault, Zhaoping Lu
Summary: By introducing dense local packing regions in BMGs, enhancing structural fluctuations has led to a simultaneous increase in ductility and strength.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Tianhao Liu, Limin Lai, Siming Xiao, Meifang Tang, Hongju Zhang, Shengfeng Guo
Summary: In this study, a new ternary system of Fe-W-B BMGs with ultrahigh thermal stabilities and hardness was successfully developed, showing promising applications in extreme service environment. The thermal properties and simple chemical components of Fe-W-B BMGs make them model materials for understanding the glass formation mechanism of Fe-based BMGs.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Mingcan Li, Huimin Guan
Summary: This study investigates the effect of the upper temperature for cryogenic thermal cycling treatment on the plasticity of Fe-based bulk metallic glasses. It is found that the plasticity is highest when the upper temperature is about 0.62Tg. The understanding of the underlying mechanism provides guidance for the treatment process of Fe-based bulk metallic glasses.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xia Li, Yihao Wang, Lu Wang, Mingqin Xu, Jiaojiao Yi
Summary: The thermal stability of a composition Zr60Co27Al13 was analyzed under both a monolithic amorphous state and symbiotic primary crystal-glass state. It was found that the symbiotic metallic glass is more stable than the monolithic metallic glass due to the consumption of short-range order clusters, relaxation in atomic dimensions, and more homogenous elemental distribution in the residual amorphous regions. This research may contribute to the development of metallic glasses with higher thermal stability.
Review
Chemistry, Physical
S. Thanka Rajan, A. Arockiarajan
Summary: Amorphous thin film metallic glasses (TFMGs) have generated significant interest for their potential in practical applications and scientific importance in the biomedical field.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Benjamin T. Afflerbach, Carter Francis, Lane E. Schultz, Janine Spethson, Vanessa Meschke, Elliot Strand, Logan Ward, John H. Perepezko, Dan Thoma, Paul M. Voyles, Izabela Szlufarska, Dane Morgan
Summary: In this study, a random forest model was used to predict the critical cooling rate for glass formation of different alloys based on features of their constituent elements. The model was trained on a comprehensive database and achieved high accuracy in cross-validation. It can be used to identify potential new metallic glass systems, but its main utility lies in identifying alloy systems with good glass formers.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
H. Zhang, Z. Wang, H. J. Yang, X. H. Shi, P. K. Liaw, J. W. Qiao
Summary: Based on microscopic mechanisms, a constitutive equation for crack-like propagation velocity and a flow model for bulk metallic glasses (BMGs) are derived. The model explains the fundamental deformation of BMGs and accurately predicts the transition between serrated and non-serrated flows. The results are consistent with experimental data, providing a theoretical basis for plastically processing BMGs.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Birte Riechers, Catherine Ott, Saurabh Mohan Das, Christian H. Liebscher, Konrad Samwer, Peter M. Derlet, Robert Maass
Summary: Using spatially resolved elastic property mapping, this study demonstrates the existence of a 100 nm elastic decorrelation length in a Zr-based bulk metallic glass. The long-range elastic modulations are believed to result from structural variations during solidification, rather than chemical phase separation. This research is important for understanding the microstructure of metallic glasses.
MATERIALS & DESIGN
(2023)
Article
Thermodynamics
Parijat P. Jana, Juergen Eckert, Jayanta Das
Summary: The study measured various properties changes in bulk metallic glasses during cold rolling process to investigate their configurational changes. Cold rolling significantly affects the physical properties and configurational entropy of alloys.
THERMOCHIMICA ACTA
(2021)
Article
Engineering, Multidisciplinary
K. Cao, D. Lesnic, M. J. Colaco
INVERSE PROBLEMS IN SCIENCE AND ENGINEERING
(2019)
Biographical-Item
Engineering, Multidisciplinary
Brian H. Dennis, Helcio R. B. Orlande, Marcelo J. Colaco, Thomas J. Martin
INVERSE PROBLEMS IN SCIENCE AND ENGINEERING
(2020)
Article
Thermodynamics
Cesar C. Pacheco, Helcio R. B. Orlande, Marcelo J. Colaco, George S. Dulikravich, Leonardo A. B. Varon, Bernard Lamien
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2020)
Article
Instruments & Instrumentation
F. Bozzoli, L. Cattani, A. Mocerino, S. Rainieri, I Tougri, M. J. Colaco
Summary: This study applies an inverse analysis technique to estimate the local convective heat flux of displaced enhancement devices in forced convection flow in pipes. The results show that the inserts cause irregular distribution of wall heat flux due to distortion in velocity profiles. Previous research focused on overall heat transfer performance, while this study fills the gap by investigating the local convective heat flux in pipes with such inserts.
QUANTITATIVE INFRARED THERMOGRAPHY JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Guilherme C. de Freitas, Marcelo J. Colaco
Summary: This paper proposes a method for estimating the thermal contact conductance distribution on the interface of a body composed of two materials, using the reciprocity functional method associated to the Classic Integral Transform Technique. The method is not limited to regular interfaces, and has shown promising results in practical tests.
INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS
(2021)
Article
Thermodynamics
Joao Coringa, Marcelo Colaco, Albino J. K. Leiroz, Eduardo Oliveira
APPLIED THERMAL ENGINEERING
(2020)
Article
Engineering, Biomedical
Abhignyan Nagesetti, George S. Dulikravich, Helcio R. B. Orlande, Marcelo J. Colaco, Anthony J. McGoron
Summary: This study evaluates the use of nanoparticles in improving drug delivery to tumors using three-dimensional tumor spheroids as models, and finds that hyperthermia can enhance the penetration of nanoparticles in tumors, potentially improving cancer treatment.
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN BIOMEDICAL ENGINEERING
(2021)
Biographical-Item
Engineering, Multidisciplinary
Marcelo J. Colaco
INVERSE PROBLEMS IN SCIENCE AND ENGINEERING
(2021)
Article
Thermodynamics
Marcelo J. Colaco, Carlos E. R. Dalla, Wellington B. Silva, Julio C. S. Dutra
Summary: In this paper, a Eulerian-Lagrangean analytical method for solving advective-diffusive problems is presented. The method transforms the advective part of the equation into a total derivative and converts the spatial part of the equation into an eigenvalue expansion using the Integral Transform Technique. The results show good agreement with other analytical and numerical techniques, making this method a reliable approach for solving such problems.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
C. C. Pacheco, C. R. Lacerda, M. J. Colaco
Summary: This paper presents a fast, robust and automatic approach for selecting the regularization parameter in Tikhonov regularization. The methodology is based on the Generalized Cross-Validation (GCV) method and is validated through numerical experiments.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Marcelo Colaco, Fabio Bozzoli, Luca Cattani, Luca Pagliarini
Summary: The paper applies the conjugate gradient method and adjoint operator to the pulsating heat pipe problem, providing interesting experimental results. The CG method with AO is proven to estimate unknown functions more efficiently than other techniques. The main purpose of the paper is to present a robust, efficient, and self-regularized inverse tool for estimating local heat transfer coefficients in pulsating heat pipes, supported by experimental results. The authors also provide all numerical and experimental data used in the paper as supplemental material to enhance its visibility and general use.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Mathematics, Applied
Raphael Costa Carvalho, Iasmin Louzada Herzog, Helcio Rangel Barreto Orlande, Marcelo Jose Colaco, Italo Marcio Madeira, Nirupam Chakraborti
Summary: This study focuses on parameter estimation of water hammer model for fast transients in pumps and valves. A hyperbolic water hammer model is solved with a weighted average flux finite volume scheme. Pressure and flow rate measurements near the inlet and outlet of the pipeline are used with Markov Chain Monte Carlo methods for parameter estimation. The study aims to reduce the computational time of the inverse problem solution with parallel computation and machine learning metamodel approaches.
COMPUTATIONAL & APPLIED MATHEMATICS
(2023)
Article
Mathematics, Applied
Inoussa Tougri, Marcelo J. Colaco, Fabio Bozzoli
Summary: The reciprocity function method is introduced as a powerful tool for transient inverse estimation of steady internal heat transfer coefficients in ducts using only external boundary data. This paper extends previous results by allowing transient measurements to be used for recovering steady heat transfer coefficients without reaching steady-state regime. The method requires only data from the external surface to estimate the unknown function on the internal surface. Results show that the method is efficient and accurate in recovering the internal heat transfer coefficients.
COMPUTATIONAL & APPLIED MATHEMATICS
(2023)
Article
Thermodynamics
Gustavo R. R. Gasperazzo, Marcelo J. J. Colaco
Summary: In this work, a solution is proposed to recover transient source terms in advection-diffusion problems. The solution technique combines the implicit finite difference method with the method of fundamental solutions, and uses Truncated Singular Value Decomposition to overcome ill-conditioning. The inverse problem of advection-diffusion is solved using Eulerian-Lagrangian method. Numerical examples demonstrate that the proposed method provides stable and accurate estimates for the source term.
HEAT TRANSFER ENGINEERING
(2023)
Article
Thermodynamics
Tomas S. Quirino, Gabriel L. Verissimo, Marcelo J. Colaco
Summary: In this study, numerical simulations were conducted to investigate the performance of a helical-channel MHD generator coupled with an outer resistance circuit. The effects of different helical geometries on power output and efficiency were evaluated using the simulation results.
COMPUTATIONAL THERMAL SCIENCES
(2022)