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Search Publications by: Fan Zhang (Fed)

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Displaying 1 - 25 of 139

Microstructural Features and Metastable Phase Formation in a High-Strength Aluminum Alloy Fabricated Using Additive Manufacturing

April 25, 2025
Author(s)
Andrew Iams, Jordan Weaver, Brandon Lane, Lucille Giannuzzi, Feng Yi, Darby LaPlant, John Martin, Fan Zhang
Additive manufacturing (AM) has captured recent attention for its potential to fabricate high-strength aluminum alloy components. A detailed understanding of the microstructure under the as-fabricated conditions is required to harness its potential. We

Insights on grain refinement of Al-Mn-Fe-Si alloy via in situ reaction during laser direct energy deposition

February 2, 2025
Author(s)
Qingyu Pan, Fan Zhang, Deepak Vikraman Pillai, Zilong Zhang, Yufeng Zheng, Lang Yuan, Monica Kapoor, John Carsley, Xiaoyuan Lou
In the present work, we studied the grain refinement by adding in situ reactants, pure titanium (Ti) or a combination of Ti and boron (B), and investigated the governing mechanism in Al-Mn-Fe-Si 3104 alloy made by laser direct energy deposition (DED)

Complex Precipitation Behavior in a Co-free High Entropy Alloy during Aging

September 11, 2024
Author(s)
Matthew Luebbe, Fan Zhang, Jonathan Poplawsky, Jiaqi Duan, Haiming Wen
High entropy alloys (HEAs) demonstrate high strength, thermal stability, and irradiation resistance, making them desirable for applications in nuclear reactors and other harsh environments. Many existing HEAs contain cobalt (Co), which makes them

Structure Development in Cross-Linked, Soybean Oil-based Waterborne Polyurethanes

August 16, 2024
Author(s)
Zoran S Petrovic, Jasna Djonlagic, Jian Hong, Milica Vukovic, Jan Ilavsky, Brian Bush, Fan Zhang
Development of waterborne polyurethanes (WPU) using bio-based sources represents a step towards sustainable materials science and industry. We synthesized bio-based cationic water-dispersed crosslinked polyurethanes from high oleic soybean oil (HOSO)

Precision Calcination Mechanism of CaCO 3 to High-Porosity Nanoscale CaO CO 2 Sorbent Revealed by Direct In Situ Observations

April 5, 2024
Author(s)
Jenny Martinez, Jenna Wardini, Xueli Zheng, Lauren Moghimi, Jason Rakowsky, Jonathan Means, Huiming Guo, Ivan Kuzmenko, Jan Ilavsky, Fan Zhang, Pratik Dholabhai, Leora Dresselhaus-Marais, William Bowman
Deploying energy storage and carbon capture at scale is hindered by the substantial endothermic penalty of decomposing CaCO3 to CaO and CO2, and the rapid loss of CO2 absorption capacity by CaO sorbent particles due to sintering at the high requisite

Phase Composition and Phase Transformation of Additively Manufactured Nickel Alloy 718 AM Bench Artifacts

February 5, 2024
Author(s)
Fan Zhang, Aaron Johnston-Peck, Lyle E. Levine, Michael Katz, Kil-Won Moon, Maureen E. Williams, Sandra W. Young, Andrew J. Allen, Olaf Borkiewicz, Jan Ilavsky
Additive Manufacturing (AM) technologies offer unprecedented design flexibility but are limited by a lack of understanding of the material microstructure formed under their extreme and transient processing conditions and its subsequent transformation

In situ Probing of Interfacial Roughness and Transient Phases During Ceramic Cold Sintering Process

October 15, 2023
Author(s)
Fan Zhang, Russell Maier, Igor Levin, Andrew J. Allen, Jun-Sang Park, Peter Kenesei, Ivan Kuzmenko, Jan Ilavsky, Pete Jemian
The ceramic cold sintering process (CSP) offers an eco-friendly approach to producing fully dense ceramics at low temperatures. However, an incomplete mechanistic understanding hinders its optimization and widespread adoption. In this study, we analyze the

Effect of austenite fraction and stability on strength-hardening-ductility in additively manufactured 17-4 PH stainless steel containing nitrogen

June 30, 2023
Author(s)
Saadi Habib, Steven P. Mates, Fan Zhang, Mark R. Stoudt, James Zuback, Olaf Borkiewicz
Additively-manufactured (AM) 17-4 precipitation-hardening (PH) martensitic stainless steel (SS) built from nitrogen-atomized powder often retains a large volume fraction of austenite. The retained austenite lowers the yield strength compared to both

A high-strength precipitation hardened cobalt-free high-entropy alloy

April 12, 2023
Author(s)
Matthew Luebbe, Jiaqi Duan, Fan Zhang, Jonathan Poplawsky, Hans Pommeranke, Maalavan Arivu, Andrew Hoffman, Haiming Wen
Recent studies on precipitation-hardened high-entropy alloys (HEAs) demonstrate their high strength and thermal stability, making them promising materials for high-temperature structural applications such as nuclear reactors. However, many existing HEAs

Solidification modes during additive manufacturing of steel revealed by high-speed X-ray diffraction

March 1, 2023
Author(s)
Hans-Henrik Konig, Niklas Hollander Pettersson, A Durga, Steven Van Petegem, Daniel Grolimund, Qilin Guo, Chihpin Chuang, lianyi Chen, Christos Oikonomou, Fan Zhang, Greta Lindwall
Solidification during fusion-based additive manufacturing (AM) is characterized by high solidification velocities and high thermal gradients, two factors that control the solidification mode of AM metals and alloys. Using two synchrotron-based, in situ

Control of Micro-and Nanostructure of Layered Double Hydroxides by Hydrothermal Treatment

February 23, 2023
Author(s)
Keiichiro Maegawa, Fan Zhang, Qiaxian Johnson, Mihaela Jitianu, Tan Wai Kian, Go Kawamura, Atsunori Matsuda, Andrei Jitianu
Layered double hydroxides (LDHs) are mixed M(II) and M(III) hydroxides with positively charged lamellar brucite layers and interlayered anions. LDHs attracted significant attention due to their anion and cation-exchange ability, adsorption capacity, and

Probing Accelerated Salt-Induced Relaxation Dynamics of Laponite Suspensions Using X-Ray Photon Correlation Spectroscopy Measurements and Molecular Dynamics Simulations

December 22, 2022
Author(s)
Sohaib Mohammed, Meishen Liu, Qingteng Zhang, Suresh Narayanan, Fan Zhang, Greeshma Gadikota
Linking the physics of the relaxation behavior of visco-elastic fluids as they form arrested gel states to the underlying nano-scale structure and energetic interactions is essential for developing predictive controls. In this study, laponite suspensions
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