Planar shock compression of spark plasma sintered B4C and B4C-TiB2 ceramic composites (open access)

Planar shock compression of spark plasma sintered B4C and B4C-TiB2 ceramic composites

Article describes how blending of ceramic constituent phases enhances sinterability and performance in high strength ceramics. The authors describe how a near fully dense blended boron carbide (B4C)-titanium diboride (TiB2) composite produced through spark plasma sintering (SPS) is probed to understand the mechanical performance under dynamic uniaxial strain, or shock compression.
Date: January 24, 2024
Creator: Turnage, Scott A.; Clayton, John D.; Rodriguez, Jonathan; Scharf, Thomas W. & Williams, Cyril L.
Object Type: Article
System: The UNT Digital Library
Collaborative Research: DMREF: AI-enabled Automated design of ultrastrong and ultraelastic metallic alloys (open access)

Collaborative Research: DMREF: AI-enabled Automated design of ultrastrong and ultraelastic metallic alloys

Data management plan for the grant, "Collaborative Research: DMREF: AI-enabled Automated design of ultrastrong and ultraelastic metallic alloys"
Date: 2024-01-15/2027-09-30
Creator: Zheng, Yufeng
Object Type: Text
System: The UNT Digital Library
Quantitative estimation of closed cell porosity in low density ceramic composites using X-ray microtomography (open access)

Quantitative estimation of closed cell porosity in low density ceramic composites using X-ray microtomography

Article asserts that x-ray Microtomography is a proven tool for phase fraction analysis of multi-phase systems, provided that each phase is adequately partitioned by some means of data processing. The authors present a novel, combined methodology for accurate porosity analysis—despite these shortcomings.
Date: January 4, 2023
Creator: Smith, J. D.; Garcia, C.; Rodriguez, J. & Scharf, T. W.
Object Type: Article
System: The UNT Digital Library
Friction stir-based additive manufacturing (open access)

Friction stir-based additive manufacturing

This article is a review of friction stir additive manufacturing (FSAM) and additive friction stir deposition (AFSD) and provides a systems approach framework and a conceptual process model to guide researchers.
Date: January 18, 2022
Creator: Mishra, Rajiv; Haridas, Ravi Sankar & Agrawal, Priyanshi
Object Type: Article
System: The UNT Digital Library
Unveiling the interplay of deformation mechanisms in a metastable high entropy alloy with tuned composition using synchrotron X-ray diffraction (open access)

Unveiling the interplay of deformation mechanisms in a metastable high entropy alloy with tuned composition using synchrotron X-ray diffraction

Article investigating the mechanical behavior of a metastable high entropy alloy (HEA) with composition Fe39-Mn20-Co20-Cr15-Si5-1Al (at%).
Date: January 15, 2022
Creator: Polatidis, E.; Shukla, S.; Čapek, J.; Van Petegem, S.; Casati, N. & Mishra, R. S.
Object Type: Article
System: The UNT Digital Library
Hydrogen bonding interactions of H2O and SiOH on a boroaluminosilicate glass corroded in aqueous solution (open access)

Hydrogen bonding interactions of H2O and SiOH on a boroaluminosilicate glass corroded in aqueous solution

This article simulates hydrous species (H2O and Si-OH) on nano-porous alteration layers (gels) formed on a boroaluminosilicate glass called International Simple Glass corroded in aqueous solutions at pH 7 and pH 9, and initially saturated with soluble silicon-containing species were analyzed using linear and non-linear vibrational spectroscopy in combination with molecular dynamics simulations. The simulation and experimental results obtained in this study indicate that the water mobility in the gel formed at pH 9 could be slower than that in the gel formed at pH 7, and as a result, the leaching rate at pH 9 is slower than that at pH 7.
Date: January 7, 2020
Creator: Ngo, Dien; Liu, Hongshen; Chen, Zhe; Huseyin, Kaya; Zimudzi, Tawanda J.; Gin, Stéphane et al.
Object Type: Article
System: The UNT Digital Library
Durability of Portland Concrete Containing Polymeric Fillers and Fly Ash (open access)

Durability of Portland Concrete Containing Polymeric Fillers and Fly Ash

Article explores degradation of Portland concrete and finds that the combination of fly ash with polymers provides significantly improved properties.
Date: January 2, 2020
Creator: Brostow, Witold, 1934-; Chetuya, Nonso; Hong, Hee Jae; Gencel, Osman; Menard, Noah & Sayana, Susmitha
Object Type: Article
System: The UNT Digital Library
Ordering-mediated local nano-clustering results in unusually large Hall-Petch strengthening coefficients in high entropy alloys (open access)

Ordering-mediated local nano-clustering results in unusually large Hall-Petch strengthening coefficients in high entropy alloys

This article reports a dramatic increase in the grain boundary strengthening or Hall-Petch coefficient, K, by systematically investigating the effect of Al addition on tensile yield strength in CoFeNi and CoCrFeNi high entropy alloys (HEAs) or complex concentrated alloys (CCAs). Such a trend is attributed to the ordering mediated nano-clustering in Al containing HEA/CCAs.
Date: January 23, 2021
Creator: Jagetia, Abhinav; Nartu, M. S. K. K. Y.; Dasari, S.; Sharma, A.; Gwalani, Bharat & Banerjee, Rajarshi
Object Type: Article
System: The UNT Digital Library
Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy (open access)

Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy

This article explores the effects of laser surface melting on microstructure and surface topography evolution in AZ31B magnesium alloy.
Date: January 19, 2021
Creator: Wu, Tso-Chang; Joshi, Sameehan; Ho, Yee-Hsien; Pantawane, Mangesh V.; Sinha, Subhasis & Dahotre, Narendra B.
Object Type: Article
System: The UNT Digital Library
Effect of Polymer Removal on the Morphology and Phase of the Nanoparticles in All-Inorganic Heterostructures Synthesized via Two-Step Polymer Infiltration (open access)

Effect of Polymer Removal on the Morphology and Phase of the Nanoparticles in All-Inorganic Heterostructures Synthesized via Two-Step Polymer Infiltration

This article uses iron oxide/alumina heterostructures formed by two-step infiltration of polystyrene-block-polyvinyl pyridine block copolymer with iron and aluminum precursors from the solution and vapor-phases, respectively, to show that the phase and morphology of iron oxide nanoparticles dramatically depend on the approach used to remove the polymer. The article extends the boundaries of structure manipulations in multicomponent heterostructures synthesized using polymer infiltration synthesis and their properties.
Date: January 28, 2021
Creator: Berman, Diana; Sha, Yuchen & Shevchenko, Elena V.
Object Type: Article
System: The UNT Digital Library
Co-introduction of precipitate hardening and TRIP in a TWIP high-entropy alloy using friction stir alloying (open access)

Co-introduction of precipitate hardening and TRIP in a TWIP high-entropy alloy using friction stir alloying

Article exploring friction stir alloying (FSA) to tune the microstructure and a composition of a TWIP high-entropy alloy by adding Ti, and thus activating site-specific deformation mechanisms that occur concomitantly in a single alloy. This approach presents a novel microstructural architecture to design alloys, an approach that combines and optimizes local compositions such that multiple deformation mechanisms can be activated to enhance engineering properties.
Date: January 15, 2021
Creator: Wang, Tianhao; Shukla, Shivakant; Gwalani, Bharat; Sinha, S.; Thapliyal, Saket; Frank, Michael et al.
Object Type: Article
System: The UNT Digital Library
Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy (open access)

Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy

Article describes the development of bcc-ordered B2 and fcc phases manifested in three different orientation relationships (ORs) in the same microstructure: Kurdjumov–Sachs, Nishiyama–Wasserman and Pitsch.
Date: January 22, 2018
Creator: Choudhuri, Deep; Shukla, Shivakant; Green, Whitley; Gwalani, Bharat; Ageh, Victor; Banerjee, Rajarshi et al.
Object Type: Article
System: The UNT Digital Library
Achieving extraordinary structural efficiency in a wrought magnesium rare earth alloy (open access)

Achieving extraordinary structural efficiency in a wrought magnesium rare earth alloy

Article describes development of an ultrafine-grained magnesium alloy with an extraordinary strength and ductility combination, exceptional high specific strength, zero yield strength asymmetry and excellent high strain rate superplasticity.
Date: January 29, 2020
Creator: Panigrahi, S. K.; Mishra, Rajiv; Brennan, R.C. & Cho, K. C.
Object Type: Article
System: The UNT Digital Library
In Situ Fabrication of a Graphene-Coated Threedimensional Nickel Oxide Anode for High-Capacity Lithium-Ion Batteries (open access)

In Situ Fabrication of a Graphene-Coated Threedimensional Nickel Oxide Anode for High-Capacity Lithium-Ion Batteries

This article discusses the development of an in situ fabrication of a graphene-coated, three-dimensional (3D) NiO-Ni structure by simple chemical vapor deposition (CVD).
Date: October 5, 2017
Creator: Kang, Chiwon; Cha, Eunho; Lee, Sang Hyub & Choi, Wonbong
Object Type: Article
System: The UNT Digital Library
Ultra-high Photoresponsivity in Suspended Metal-Semiconductor-Metal Mesoscopic Multilayer MoS₂ Broadband Detector from UV-to-IR with Low Schottky Barrier Contacts (open access)

Ultra-high Photoresponsivity in Suspended Metal-Semiconductor-Metal Mesoscopic Multilayer MoS₂ Broadband Detector from UV-to-IR with Low Schottky Barrier Contacts

This article describes the performance of a multifaceted investigation comprising of atomic force microscopy (AFM0, photoluminescence (PL) and Raman spectroscopy to analyze the structural and chemical characteristics to help shed insights on the origins of the superior optoelectronic device performance.
Date: February 23, 2017
Creator: Saenz, Gustavo A.; Karapetrov, Goran; Curtis, James & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
Electrochemical and Friction Characteristics of Metallic Glass Composites at the Microstructural Length-scales (open access)

Electrochemical and Friction Characteristics of Metallic Glass Composites at the Microstructural Length-scales

This article evaluates the phase-specific electrochemical and friction characteristics of a Zr-based mtallic glass composite, which comprised roughly of 40% by volume crystalline dendrites in an amorphous matrix.
Date: November 1, 2017
Creator: Ayyagari, Aditya; Hasannaeimi, Vahid; Singh Arora, Harpreet & Mukherjee, Sundeep
Object Type: Article
System: The UNT Digital Library
Nanopatterned Graphene Field Effect Transistor Fabricated Using Block Co-polymer Lithography (open access)

Nanopatterned Graphene Field Effect Transistor Fabricated Using Block Co-polymer Lithography

This article demonstrates a successful fabrication of Nanopatterened Graphene (NPG) using a PS-b-P4VP polymer.
Date: January 9, 2014
Creator: Choi, Duyoung; Kuru, Cihan; Choi, Chulmin; Noh, Kunbae; Hong, Soon-Kook; Das, Santanu et al.
Object Type: Article
System: The UNT Digital Library
Atomic Simulations of Twist Grain Boundary Structures and Deofrmation Behaviors in Aluminum (open access)

Atomic Simulations of Twist Grain Boundary Structures and Deofrmation Behaviors in Aluminum

This article investigates twist grain boundaries with molecular dynamic simulations to reveal their atomic structures, energy and interactions with dislocations.
Date: January 30, 2017
Creator: Yin, Qing; Wang, Zhiqiang; Mishra, Rajiv & Xia, Zhenhai
Object Type: Article
System: The UNT Digital Library
Recent Development of Two-Dimensional Transition Metal Dichalcogenides and Their Applications (open access)

Recent Development of Two-Dimensional Transition Metal Dichalcogenides and Their Applications

This article reviews the recent progress in 2D materials beyond graphene and includes mainly transition metal dichalcogenides.
Date: January 9, 2017
Creator: Choi, Wonbong; Choudhary, Nitin; Han, Gang Hee; Park, Juhong; Akinwande, Deji & Lee, Young Hee
Object Type: Article
System: The UNT Digital Library
Interfacial Structures and Energetics of the Strengthening Precipitate Phase in Creep-Resistant Mg-Nd-Based Alloys (open access)

Interfacial Structures and Energetics of the Strengthening Precipitate Phase in Creep-Resistant Mg-Nd-Based Alloys

This article discusses the study of two interfaces– {112}β1/{1100}Mg and {111}β1/{1120}Mg– that are commensurate with β1/hcp-Mg orientation relationship via first principles calculations.
Date: January 17, 2017
Creator: Choudhuri, Deep; Banerjee, Rajarshi & Srivilliputhur, Srinivasan
Object Type: Article
System: The UNT Digital Library