Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Shahani, Ashwin J"'
Laser surface remelting of as-cast Al-Ge eutectic alloy is shown to produce ultrafine lamellar eutectic morphology with interlamellar spacing refined up to ~60 nm and composed of FCC Al solid solution and unusual AlxGey intermetallic phases that do n
Externí odkaz:
http://arxiv.org/abs/2409.07648
Autor:
Chao, Paul, Aramanda, Shanmukha Kiran, Xiao, Xianghui, Bottin-Rousseau, Sabine, Akamatsu, Silvère, Shahani, Ashwin J.
Publikováno v:
Acta Materialia (2024) 120314
We investigate the irregular eutectic growth dynamics of the Al-Al3Ni alloy, in which one of the solid phases (Al3Ni) grows faceted from the liquid. Leveraging in situ optical microscopy and synchrotron transmission x-ray microscopy, we address the q
Externí odkaz:
http://arxiv.org/abs/2408.14346
Autor:
Zhou, Xinyi, Chao, Paul, Sloan, Luke, Lien, Huai-Hsun, Hunter, Allen H., Misra, Amit, Shahani, Ashwin J.
Publikováno v:
Scripta Materialia 232 (2023) 115471
Al-Si alloys processed by laser rapid solidification yield eutectic microstructures with ultrafine and interconnected fibers. Such fibrous structures have long been thought to bear resemblance to those formed in impurity-doped alloys upon conventiona
Externí odkaz:
http://arxiv.org/abs/2304.03740
Publikováno v:
Acta Materialia, 118335 (2022)
We investigate solidification of an Al-Al2Cu as a model system to understand the emergence of patterns (such as lamellar, rod and maze-like) within eutectic colonies. To uncover the morphological transitions in-situ and in 3D, we introduce here a new
Externí odkaz:
http://arxiv.org/abs/2206.11667
Publikováno v:
In Scripta Materialia 1 November 2024 252
Autor:
Gladstein, Aaron, Aramanda, Shanmukha Kiran, Shi, Lingxia, Landini, Jason, Goettsch, Jonathan, Reese, Caleb, Sahu, Bibhu, Xiao, Xianghui, Hunter, Allen, Thornton, Katsuyo, Shahani, Ashwin J., Taub, Alan I.
Publikováno v:
In Acta Materialia 15 September 2024 277
Publikováno v:
In Acta Materialia 1 August 2024 274
Autor:
Han, Insung, Wang, Kelly L., Cadotte, Andrew T., Xi, Zhucong, Parsamehr, Hadi, Xiao, Xianghui, Glotzer, Sharon C., Shahani, Ashwin J.
Quasicrystals exhibit long-range order but lack translational symmetry. When grown as single crystals, they possess distinctive and unusual properties owing to the absence of grain boundaries. Unfortunately, conventional methods such as bulk crystal
Externí odkaz:
http://arxiv.org/abs/2106.14074
Autor:
Lindemann, George R., Chao, Paul, Nikitin, Viktor, De Andrade, Vincent, De Graef, Marc, Shahani, Ashwin J.
Publikováno v:
In Acta Materialia 1 March 2024 266
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