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Full-Text Articles in Engineering
Tribo-Corrosion Response Of Additively Manufactured High-Entropy Alloy, Jibril Shittu, Maryam Sadeghilaridjani, Mayur Pole, Saideep Muskeri, Jie Ren, Yanfang Liu, Ismael Tahoun, Harpreet Arora, Wen Chen, Narendra Dahotre
Tribo-Corrosion Response Of Additively Manufactured High-Entropy Alloy, Jibril Shittu, Maryam Sadeghilaridjani, Mayur Pole, Saideep Muskeri, Jie Ren, Yanfang Liu, Ismael Tahoun, Harpreet Arora, Wen Chen, Narendra Dahotre
Mechanical and Industrial Engineering Faculty Publication Series
High-entropy alloys (HEAs) with multiple principal elements represent a paradigm shift in structural alloy design and show excellent surface degradation resistance in corrosive environment. Here, the tribo-corrosion response of laser-engineered net-shaped CoCrFeMnNi HEA was evaluated in 3.5 wt% NaCl solution at room temperature. The additively manufactured (AM-ed) CoCrFeMnNi showed five times lower wear rate, regenerative passivation, and nobler corrosion potential during tribo-corrosion test compared to its arc-melted counterpart. A significant anisotropy was seen in the tribo-corrosion response with 45 degrees to the build direction showing better performance compared to tests along the build direction and perpendicular to it. The open …
Strain Effects On The Diffusion Properties Of Near-Surface Self-Interstitial Atoms And Adatoms In Tungsten, Bochuan Sun, Dimitrios Maroudas, Brian D. Wirth, Enrique Martínez
Strain Effects On The Diffusion Properties Of Near-Surface Self-Interstitial Atoms And Adatoms In Tungsten, Bochuan Sun, Dimitrios Maroudas, Brian D. Wirth, Enrique Martínez
Chemical Engineering Faculty Publication Series
Tungsten (W) is a candidate for the plasma-facing components and divertor in future fusion applications. The material will be subject to a large particle influx (mainly helium and hydrogenic species) that will form bubbles. As bubbles grow, they compress the material, adding to thermal stresses, and eject self-interstitial atoms (SIAs-isolated or in clusters) to release internal pressure. These SIAs diffuse towards the surface in large stress/strain fields and on the surface are thought to act as precursors for nanotendril formation (also known as fuzz) that develops on the material surface modifying its morphology. In this work we analyze the effect …