Article
Materials Science, Multidisciplinary
Liuxia Sun, Jing Bai, Feng Xue
Summary: The microstructure and texture evolution of high-performance Mg-4.7Gd alloy wires prepared by large-strain multiple-pass cold drawing process were studied. It was found that Mg alloy exhibited excellent formability at room temperature, and the microstructure of the drawn alloy wires showed the presence of nano-sized grains. The texture of the alloy also changed after drawing, which was beneficial for subsequent cold drawing.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Nowfal Al-Hamdany, Mohammed Zakria Salih, Heinz Palkowski, Adele Carrado, Weimin Gan, Norbert Schell, Heinz-Guenter Brokmeier
Summary: This study investigates the impact of using a tilted die during tube drawing on eccentricity, texture, dislocation density, and mechanical properties. Different textures, namely plane strain and uniaxial types, were developed during tube drawing. The variation in texture between maximum and minimum wall thickness has limited influence on mechanical properties, but an increase in strength was observed after each drawing pass.
Article
Chemistry, Physical
Lili Wang, Weidong Chen, Chengshan Li, Guo Yan, Yong Feng, Pingxiang Zhang, Yong Zhang, Yong Zhao
Summary: The sparking plasma sintering (SPS) technique can effectively improve the grain connection and refinement of MgB2, enhancing its superconductivity performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Seyed Moien Faregh, Ghader Faraji, Mahmoud Mosavi Mashhadi, Mohammad Eftekhari
Summary: The study found that the UFG pure copper tube processed by HTCEE method exhibited significant mechanical anisotropy, which can be reduced by the HTCEE process while maintaining low ductility loss.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Multidisciplinary Sciences
P. Van Cauwenbergh, V. Samaee, L. Thijs, J. Nejezchlebova, P. Sedlak, A. Ivekovic, D. Schryvers, B. Van Hooreweder, K. Vanmeensel
Summary: The study uncovers the relationship between the microstructure and macroscopic material properties of LPBF-processed AlSi10Mg, identifying grain refinement and Si supersaturation as crucial elements for achieving superior mechanical and thermal properties during heat treatment. Additionally, an electrical conductivity model accurately predicts Si solute concentration in LPBF-processed and heat-treated AlSi10Mg, facilitating understanding of microstructural evolution during heat treatment. The LPBF-processed and heat-treated AlSi10Mg conditions exhibit a range of superior mechanical properties compared to the mould-cast T6 reference condition.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Manufacturing
Song-Wei Wang, Yan Chen, Hong-Wu Song, Ali Abd El-Aty, Jin-Song Liu, Shi-Hong Zhang
Summary: The study investigates the texture evolution of copper tube manufactured by floating plug drawing process through experimental and modeling methods. The results show that the initial textures of copper tube transform sharply after the first pass, with final textures consisting of Goss {110} and P {110} components. The VPSC model was used to study the texture transformation and slip system activity during the drawing process, proposing two transformation paths that align well with the simulation results.
INTERNATIONAL JOURNAL OF MATERIAL FORMING
(2021)
Article
Multidisciplinary Sciences
Azhar Iqbal Kashif Butt, Nehad Ali Shah, Waheed Ahmad, Thongchai Botmart, Naeed Ahmad
Summary: In this paper, an isothermal glass tube drawing model composed of three coupled nonlinear partial differential equations is studied. The steady-state solution is obtained using a numerical based approach, where the boundary value problem is converted into a set of initial value problems and an integrating technique is implemented to develop the analytical solution.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Physical
Federico Bosio, Diego Manfredi, Mariangela Lombardi
Summary: This study investigates in-situ alloying through Laser Powder Bed Fusion (LPBF) and finds that mixing dissimilar powders results in heterogeneous alloys and element segregation. A post-process heat-treatment is employed to improve the alloy homogeneity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Xuan Yu, Guowei Li, Yuanbin Hu, Ming Chen, Zhou Yu, Lian Liu, Yongliang Chen, Yong Zhang, Yong Zhao
Summary: Powder-in-tube (PIT) Nb-3(Al1-xCux) superconducting wires fabricated by rapid heating, quenching and transformation (RHQT) process showed improved Tc, Jc and B-irr performance with the addition of Cu and atomic long range ordering during low temperature annealing. The highest Tc, narrowest ΔTc, and best layer Jc were found in the Nb-3(Al0.97Cu0.03) wire, which also exhibited the highest B-irr value at 8 K and 12 K. The formed A15 phase displayed uniform microstructure and composition, with flux pinning mechanism following surface pinning.
Article
Engineering, Manufacturing
Keyvan Safaei, Mohammadreza Nematollahi, Parisa Bayati, Fatemeh Kordizadeh, Mohsen Taheri Andani, Hossein Abedi, Behrang Poorganji, Mohammad Elahinia
Summary: There is a growing interest in additive manufacturing (AM) techniques for producing complex-shaped parts and tailoring the microstructure and properties. NiTi-based shape memory alloys (SMA) have a poor machinability and require additional treatments. The build orientation approach is used to control the crystallographic texture of LPBF-processed NiTi specimens. The study shows the significant effect of building orientation on the crystallographic texture and discusses the mechanism of this approach. The thermomechanical properties of the printed samples are assessed and correlated to the crystallographic textures.
ADDITIVE MANUFACTURING
(2022)
Article
Chemistry, Physical
Daniel Gajda, Andrzej J. Zaleski, Andrzej J. Morawski, Malgorzata Malecka, Lan Maria Tran, Matt Rindfleisch, Tomasz Durejko, Tomasz Czujko
Summary: By annealing the structure under high isostatic pressure, the structure of multifilament MgB2 wires made by the powder-in-tube method can be texturized, leading to continuous fibers with high critical current density and small grain size.
Article
Engineering, Manufacturing
Rakesh R. Kamath, Peeyush Nandwana, Yang Ren, Hahn Choo
Summary: The study compared the effects of spot melt strategy and linear melt strategy on solidification texture, variant selection, and phase fraction along the build height. The spot melt strategy resulted in a more homogeneous microstructure compared to the linear melt strategy.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Jingwei Liang, Shibo Wu, Zhenglong Lei, Yanbin Chen, Xinrui Zhang, Bingwei Li, Meng Jiang, Yuan Chen
Summary: In this study, the effects of preheating temperature on the microstructure, mechanical properties, and corrosion resistance of a ZK60 Mg alloy processed by laser powder bed fusion (LPBF) were analyzed. The results showed that as the preheating temperature increases, the mechanical properties of the alloy improve, but the corrosion resistance first improves and then deteriorates. It was concluded that selecting an appropriate preheating temperature is crucial to obtain the desired mechanical properties and corrosion resistance.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Liang Wu, Suvajeet Das, Witalij Gridin, Stefan Leuders, Moritz Kahlert, Malte Vollmer, Thomas Niendorf
Summary: The focus of the study is on the laser powder bed fusion processing of AISI H13 hot work tool steel. The optimization of process parameters and material evaluation stages has led to an improved understanding of processability and the formation of microstructures and defects during processing. Understanding solidification cracking and residual stress cracking is crucial for robust process and material development.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Food Science & Technology
Seung Su Yu, Han Soo Ahn, Sung Hee Park
Summary: The heat penetration characteristics of various vegetable products were studied during retort processing. A custom-developed variable temperature retort-sterilizer was used to test different target retort temperatures (120, 130, 140, and 150 degrees C) and holding times (1, 3, 5, 7 min). Radish demonstrated the highest heating rate among the tested vegetables. The results indicate that the retort temperature should be properly controlled based on the specific heat-penetration characteristics of different vegetable products.
FOOD SCIENCE AND BIOTECHNOLOGY
(2023)
Article
Physics, Applied
M. D. Sumption, J. P. Murphy, T. Haugan, M. Majoros, D. C. van der Laan, N. Long, E. W. Collings
Summary: Characteristics of CORC(R) and Roebel cables using ReBCO conductors were studied in a spinning magnet calorimeter. The losses of both cables were mainly composed of hysteresis losses, flux creep effects, and eddy current losses. The spiral geometry of the CORC(R) cables led to reduced losses.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Review
Oncology
Edward W. Collings, Lanchun Lu, Nilendu Gupta, Mike D. Sumption
Summary: The paper emphasizes the importance of proton or other charged particle therapy and provides an overview of the current systems and manufacturers worldwide. It compares the properties of photons, protons, and carbon ions for therapy and discusses the principles of particle beam handling and gantry design. The paper also highlights the potential of MRI image guidance in improving the accuracy of targeting and positioning in particle therapy.
FRONTIERS IN ONCOLOGY
(2022)
Article
Engineering, Electrical & Electronic
M. Majoros, M. D. Sumption, M. Parizh, F. Wan, M. A. Rindfleisch, D. Doll, M. Tomsic, E. W. Collings
Summary: This study presents the magnetic, mechanical, and thermal design of a whole-body MRI magnet with square cross-section coils, which can achieve comparable performance to the helium-cooled magnet through conduction cooling.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Chemistry, Multidisciplinary
Ryan Selhorst, Zhuohang Yu, David Moore, Jie Jiang, Michael A. Susner, Nicholas R. Glavin, Ruth Pachter, Mauricio Terrones, Benji Maruyama, Rahul Rao
Summary: Layered Transition Metal Dichalcogenides (TMDs) are important materials with a diverse range of optoelectronic properties. This study investigates the spatial tailoring of TMDs through electron-beam patterning, achieving high resolution and demonstrating potential for nanoscale functionalization. The modulated properties were found to be dependent on various parameters, and the results were confirmed through spectroscopic analysis and density functional theory modeling. This research provides a robust method for property modulation and functionalization of TMDs at the nanoscale.
Article
Physics, Applied
F. Wan, M. D. Sumption, E. W. Collings
Summary: A series of monofilamentary powder-in-tube MgB2 wires were fabricated with 2 mol. % C doping and co-additions of 0-3 wt. % Dy2O3, showing improved irreversibility fields (mu H-0(irr)), upper critical fields (mu(0)Hc(2)), and transport critical currents. The addition of 1 wt. % Dy2O3 to already optimally C-doped MgB2 wires produced higher H-c2//ab, H-c2//c, and Hirr values at 4.2 K. C/Dy2O3 co-addition was found to be a more promising candidate for improving non-barrier J(c) of MgB2 at temperatures above 20 K, with increased critical current density (Jc) and intraband scattering.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Ryan Selhorst, Michael A. Susner, Ryan Muzzio, I-Hsuan Kao, Jennifer Carpena-Nunez, Ahmad E. Islam, Jyoti Katoch, Benji Maruyama, Rahul Rao
Summary: Defect engineering in low-dimensional materials can modulate their properties, and here we investigate the relationship between instrumental parameters and the properties of graphene. Electron dose is found to be the dominant parameter for structural modulation. Control of instrumental parameters allows for precision tailoring of graphene and enables the development of next-generation electronics.
Article
Chemistry, Multidisciplinary
Sabine M. Neumayer, Nora Bauer, Sergey Basun, Benjamin S. Conner, Michael A. Susner, Maxim O. Lavrentovich, Petro Maksymovych
Summary: The polarization dynamics in ferroelectric materials depends on the potential energy landscape of the order parameter. Ferroelectrics have the unique property of having more than two potential wells, resulting in complex energy landscapes. In this study, the presence of a triple-well potential in the Sn2P2S6 compound was revealed using scanning probe microscopy and theoretical simulations. The metastable zero polarization state in Sn2P2S6 was accessed through a gradual switching process and was found to be stabilized over a wide range of electric fields. The observed zero polarization state originated from the kinetic stabilization of the nonpolar state of the triple-well.
ADVANCED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Shanchuan Liang, Ti Xie, Nicholas A. A. Blumenschein, Tong Zhou, Thomas Ersevim, Zhihao Song, Jierui Liang, Michael A. A. Susner, Benjamin S. S. Conner, Shi-Jing Gong, Jian-Ping Wang, Min Ouyang, Igor Zutic, Adam L. L. Friedman, Xiang Zhang, Cheng Gong
Summary: Scientists have achieved electrical control of a two-dimensional magnetic insulator by using a thin ferroelectric polymer, which could be used to create compact devices.
NATURE ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Robert T. Busch, Lirong Sun, Drake Austin, Jie Jiang, Paige Miesle, Michael A. Susner, Benjamin S. Conner, Ali Jawaid, Shannon T. Becks, Krishnamurthy Mahalingam, Michael A. Velez, Riccardo Torsi, Joshua A. Robinson, Rahul Rao, Nicholas R. Glavin, Richard A. Vaia, Ruth Pachter, W. Joshua Kennedy, Jonathan P. Vernon, Peter R. Stevenson
Summary: The study investigates the optical properties of MoS2 films obtained from different exfoliation formulations. Various exfoliation procedures and chemistries result in different dimensions, impurities, doping, and strain in the exfoliated flakes, affecting the optical properties. Incomplete phase reconfiguration, lattice vacancies, intraflake strain, and Mo oxidation contribute to the observed differences in MoS2 optical properties. These findings emphasize the need for controlled technique-induced effects and suggest opportunities for further development of liquid phase exfoliation methods to engineer TMDC optical properties.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Chemistry, Physical
Rahul Rao, Ryan Selhorst, Jie Jiang, Benjamin S. Conner, Ryan Siebenaller, Emmanuel Rowe, Andrea N. Giordano, Ruth Pachter, Michael A. Susner
Summary: CuInP2S6 is a novel layered ferroelectric material with a Curie temperature above room temperature. It forms self-assembled heterostructures of CIPS and IPS within the same single crystal when synthesized with Cu deficiencies. The segregation of the material into CIPS and IPS phases results in significant strains between them. The strains were measured through Raman, infrared, and optical reflectance spectra, and unique vibrational modes were identified using density functional theory calculations.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
H. J. Kwon, J. Rochester, F. Wan, M. A. Rindfleisch, M. J. Tomsic, M. D. Sumption, E. W. Collings
Summary: Multifilamentary MgB2 strands (filament numbers 36 to 114) with 0, 2, and 3.2% carbon doping were prepared by the in-situ power-in-tube (PIT) method. These strands were tested for their J(c) and n-value at 4.2 K under magnetic fields up to 12 T. The heat treatments at 675℃ and 650℃, with the liquid-solid reaction, centered around the melting point of Mg (650℃). The J(c) (B) crossover effect was observed in a pair of strands with and without 2% C doping. The study focused on the dependence of J(c) on field strength, dopant concentration, cabling, and the dependence of n-value on field strength.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
S. Xue, J. Kwon, Y. Guo, T. Garg, M. D. Sumption, E. W. Collings
Summary: Rare earth barium copper oxide (REBCO) coated conductor tapes and cables are promising material candidates for constructing high field magnets. Compression tests were performed to analyze the mechanical behavior of commonly used tapes and cables. The results showed that the behavior could be characterized in three distinct regimes, with different moduli and stress limits for each regime.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2023)
Article
Engineering, Electrical & Electronic
Sabine M. Neumayer, Anton Ievlev, Alexander Tselev, Sergey A. Basun, Benjamin S. Conner, Michael A. Susner, Petro Maksymovych
Summary: This research demonstrates the volatile ferroelectric switching of Sn2P2S6 at room temperature and reveals the strong influence of initial polarization orientation on the switching properties. The existence and mechanism of domain walls can control the shape of the hysteresis loop, enabling controlled volatile ferroelectric switching.
NEUROMORPHIC COMPUTING AND ENGINEERING
(2023)
Meeting Abstract
Oncology
A. Ben Ali, M. Majoros, X. Zhang, E. W. Collings, N. Gupta, M. D. Sumption, L. Lu
INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS
(2022)
Article
Engineering, Industrial
Chiwoo Park, Peihua Qiu, Jennifer Carpena-Nunez, Rahul Rao, Michael Susner, Benji Maruyama
Summary: This article introduces an adaptive design strategy for regression analysis with discontinuities and demonstrates its effectiveness through two scientific examples.