Additive friction stir deposition: a deformation processing route to metal additive manufacturing (open access)

Additive friction stir deposition: a deformation processing route to metal additive manufacturing

This article outlines key advantages of additive friction stir deposition, e.g. rendering fully-dense material in the as-printed state with fine, equiaxed microstructures, identifies its niche engineering uses, and points out future research needs in process physics and materials innovation.
Date: November 24, 2020
Creator: Yu, Hang Z. & Mishra, Rajiv
Object Type: Article
System: The UNT Digital Library
The effect of laser shock peening with and without protective coating on intergranular corrosion of sensitized AA5083 (open access)

The effect of laser shock peening with and without protective coating on intergranular corrosion of sensitized AA5083

Article applies Laser Shock Peening with (LSP) and without protective coating (LPwC) to sensitized AA5083 followed by electrochemical analysis.
Date: November 1, 2021
Creator: Kaufman, Jan; Racek, Jan; Cieslar, Miroslav; Minárik, Peter; Steiner, Matthew A.; Mannava, Seetha R. et al.
Object Type: Article
System: The UNT Digital Library
In-Situ Monitoring for Quality Assurance and Machine Learning in Direct-Write Additive Manufacturing of 5G RF Electronic Ceramics (open access)

In-Situ Monitoring for Quality Assurance and Machine Learning in Direct-Write Additive Manufacturing of 5G RF Electronic Ceramics

Data management plan for the grant, "In-Situ Monitoring for Quality Assurance and Machine Learning in Direct-Write Additive Manufacturing of 5G RF Electronic Ceramics."
Date: 2023-11-01/2026-10-31
Creator: Shepherd, Nigel D.
Object Type: Text
System: The UNT Digital Library
A pseudo thermo-mechanical model linking process parameters to microstructural evolution in multilayer additive friction stir deposition of magnesium alloy (open access)

A pseudo thermo-mechanical model linking process parameters to microstructural evolution in multilayer additive friction stir deposition of magnesium alloy

Article describes how additive friction stir deposition has been proposed as a disruptive manufacturing process; involving complex thermo-mechanical mechanisms during multilayer material deposition. The primary motivation for development of the model was to seek an understanding of thermo-mechanical mechanisms and their impact on microstructural evolution during additive friction stir deposition.
Date: November 24, 2022
Creator: Sharma, Shashank; Krishna, Mani K. V.; Radhakrishnan, M.; Pantawane, Mangesh V.; Patil, Shreyash M.; Joshi, Sameehan et al.
Object Type: Article
System: The UNT Digital Library
Stability and degradation in triple cation and methyl ammonium lead iodide perovskite solar cells mediated via Au and Ag electrodes (open access)

Stability and degradation in triple cation and methyl ammonium lead iodide perovskite solar cells mediated via Au and Ag electrodes

Article focuses on the fact that there are no clear mechanisms for the interaction of electrode-induced absorber degradation pathways. Furthermore, the authors hypothesize that the formation of AgI in the PSCs, leads to corrosion of the perovskite absorber, as opposed to the benign AuI when Au electrodes are used in the solar cell stack.
Date: November 3, 2022
Creator: Kranthiraja, Kakaraparthi; Parashar, Mritunjaya; Mehta, Ravindra K.; Aryal, Sujan; Temsal, Mahdi & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library

Plexcitonic interactions in spherical and bi-pyramidical Au nanoparticles with monolayer WSe₂

Article describes how plasmons associated with zero-dimensional (0D) metal nanoparticles and their synergistic interactions with excitons in two-dimensional (2D) semiconductors offer opportunities for remarkable spectral tunability not otherwise evident in the pristine parent materials, which necessitates an in-depth study elucidating the nature of the plasmonic and excitonic interactions, jointly referred to as plexcitons in order to understand the foundational aspects of the light–matter interactions in hybrid 0D–2D systems. The authors examine the plexcitonic interactions of van der Waals (vdWs) hybrid structures composed of 2D WSe2 and 0D Au nanoparticles (Au-NPs) in their spherical (Au-Sp) and bi-pyramidical (Au-BP) architectures, which demonstrates that geometry-mediated response of the AuNPs provides another degree of freedom to modulate the carrier photodynamics in WSe₂.
Date: November 15, 2022
Creator: Jayanand, Kishan & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
Phase-Specific Damage Tolerance of a Eutectic High Entropy Alloy (open access)

Phase-Specific Damage Tolerance of a Eutectic High Entropy Alloy

Article describes how phase-specific damage tolerance was investigated for the AlCoCrFeNi2.1 high entropy alloy with a lamellar microstructure of L12 and B2 phases. Distinct differences in micro-scale deformation mechanisms were reflected in post-compression fractography, with L12-phase cantilevers showing typical characteristics of ductile failure, including the activation of multiple slip lanes, shear lips at the notch edge, and tearing inside the notch versus quasi-cleavage fracture with cleavage facets and a river pattern on the fracture surface for the B2-phase cantilevers.
Date: November 30, 2023
Creator: Jha, Shristy; Mishra, R. S. & Mukherjee, Sundeep
Object Type: Article
System: The UNT Digital Library