Effect of pressure quenching on the structures and properties of borosilicate glasses: Insights from molecular dynamics simulations (open access)

Effect of pressure quenching on the structures and properties of borosilicate glasses: Insights from molecular dynamics simulations

Article describes how processes including hot compression, cold compression and subsequent annealing on the structures and properties are investigated and compared. They found that applying pressure up to 10 GPa at the glass transition temperature led to permanent densifications and a dramatic increase of elastic moduli by 90%, while thermal annealing reversed the increase and applying pressure at ambient temperature did not increase the modulus.
Date: August 23, 2022
Creator: Ren, Mengguo & Du, Jincheng
Object Type: Article
System: The UNT Digital Library
Fundamentals of three-dimensional Yb-fiber Nd:YAG laser machining of structural bone (open access)

Fundamentals of three-dimensional Yb-fiber Nd:YAG laser machining of structural bone

This article presents a study that aims to understand the fundamental aspects of the laser-bone interaction in three-dimensional laser machining of the bone through an integrated experimental-computational approach.
Date: June 28, 2019
Creator: Dahotre, Narendra B.; Pantawane, Mangesh V.; Robertson, William B.; Khan, Riaz J. K. & Fick, Daniel P.
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
Corrosion Behavior of Selectively Laser Melted CoCrFeMnNi High Entropy Alloy (open access)

Corrosion Behavior of Selectively Laser Melted CoCrFeMnNi High Entropy Alloy

The article focuses on a study that widens the toolbox to manufacture HEAs with exceptional corrosion resistance by additive manufacturing. CoCrFeMnNi high entropy alloys (HEAs) were additively manufactured (AM) by laser powder bed fusion and their corrosion resistance in 3.5 wt% NaCl solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy tests. A systematic study of AM CoCrFeMnNi HEAs’ porosity under a wide range of laser processing parameters was conducted and a processing map was constructed to identify the optimal laser processing window for CoCrFeMnNi HEAs.
Date: September 23, 2019
Creator: Ren, Jie; Mahajan, Chaitanya; Liu, Liang; Follette, David; Chen, Wen & Mukherjee, Sundeep
Object Type: Article
System: The UNT Digital Library
Activation Volume and Energy for Dislocation Nucleation in Multi-Principal Element Alloys (open access)

Activation Volume and Energy for Dislocation Nucleation in Multi-Principal Element Alloys

Paper describes study evaluating incipient plasticity in multi-principal element alloys, CoCrNi, CoCrFeMnNi, and Al0.1CoCrFeNi by nano-indentation and compared with pure Ni.
Date: February 23, 2019
Creator: Mridha, Sanghita; Sadeghilaridjani, Maryam & Mukherjee, Sundeep
Object Type: Article
System: The UNT Digital Library
Influence of ordered L1₂ precipitation on strain-rate dependent mechanical behavior in a eutectic high entropy alloy (open access)

Influence of ordered L1₂ precipitation on strain-rate dependent mechanical behavior in a eutectic high entropy alloy

This article focuses on Al0.7CoCrFeNi, a lamellar dual-phase (fcc + B2) precipitation-strengthenable eutectic high entropy alloy. The back-stresses from the coherent L12 precipitate were insufficient to cause improvement in twin nucleation, owing to elevated twinning stress under quasi-static testing. However, under dynamic testing high density of twins were observed.
Date: April 23, 2019
Creator: Gwalani, Bharat; Gangireddy, Sindhura; Zheng, Yufeng; Soni, V.; Mishra, Rajiv & Banerjee, Rajarshi
Object Type: Article
System: The UNT Digital Library
Synthesis of uniform single layer tungsten disulfides for tunable photoluminescence (open access)

Synthesis of uniform single layer tungsten disulfides for tunable photoluminescence

This article explores single-layer tungsten disulfides (WS₂) because of their unique tunable bandgap. The authors report the scalable synthesis of uniform single-layer WS2 film by a two-step chemical vapor deposition (CVD) method followed by a laser thinning process.
Date: November 23, 2017
Creator: Park, Juhong; Kim, Min Su; Cha, Eunho; Kim, Jeongyong & Choi, Wonbong
Object Type: Article
System: The UNT Digital Library
Enhanced Strength and Ductility in a Friction Stir Processing Engineered Dual Phase High Entropy Alloy (open access)

Enhanced Strength and Ductility in a Friction Stir Processing Engineered Dual Phase High Entropy Alloy

This article presents a strong and ductile non-equiatomic high-entropy alloy obtained after friction stir processing.
Date: October 19, 2017
Creator: Nene, Saurabh S.; Liu, Kaimiao; Frank, Michael; Mishra, Rajiv; Brennan, R. E.; Cho, K. C. et al.
Object Type: Article
System: The UNT Digital Library
Anti-Fretting Wear Coating for Substrates (open access)

Anti-Fretting Wear Coating for Substrates

Patent relating to an anti-fretting wear coating for substrates.
Date: May 18, 2012
Creator: Scharf, Thomas W.; Mohseni, Hamidreza & Tiley, Jaimie S.
Object Type: Patent
System: The UNT Digital Library
Method for Removing Contaminants on a Substrate (open access)

Method for Removing Contaminants on a Substrate

Patent relating to a method for removing contaminants on a substrate.
Date: November 21, 2002
Creator: Quevedo-Lopez, Manuel A.; Wallace, Robert M.; Bouanani, Mohamed El & Gnade, Bruce
Object Type: Patent
System: The UNT Digital Library