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UID:0-6613@eng.ufl.edu
DTSTART;TZID=America/New_York:20240326T150000
DTEND;TZID=America/New_York:20240326T160000
DTSTAMP:20251201T205921Z
URL:https://www.eng.ufl.edu/news-events/events/mse-seminar-refractory-allo
 ys-with-tailored-properties-via-interstitial-engineering-and-metastability
 -processing-pathways/
SUMMARY:MSE Seminar: "Refractory Alloys with Tailored Properties via Inters
 titial Engineering and Metastability Processing Pathways"
DESCRIPTION:Abstract\nThe forthcoming era of energy systems\, propulsion\, 
 space re-entry vehicles\, and nuclear reactors points to structural materi
 als that can withstand increasingly extreme thermal environments. Body-cen
 tered cubic (BCC) refractory alloys are attracting renewed attention owing
  to the nature of atomic bonding and internal plastic dissipation pathways
 \, yet at ambient conditions\, they tend to exhibit ceramic-like behavior 
 characterized by low toughness and ductility. The design of metastable BCC
  refractory alloys using oxygen interstitials can potentially unlock prope
 rties pivotal for advancing sustainability in harsh environments.\n\nWhile
  recent research has explored emerging properties from chemical short-rang
 e order and the considerable solubilities of interstitials in BCC refracto
 ry multi-principal elements (MPEAs)\, the focus of this talk is on interst
 itial engineering (i.e.\, needing only relatively dilute concentrations) t
 o guide directed phase decomposition pathways. The concept of interstitial
  engineering emanates from oxygen-induced immiscibility\, yielding spinoda
 l decomposition with nanoscale compositional undulations and an emergent d
 ual-phase lamellar structure templated by the spinodal features. O-mediate
 d microstructures reveal strength and damage tolerance reminiscent of adva
 nced steels with the potential for high-temperature structural integrity.\
 n\nUnderstanding and ultimately taming phase decomposition pathways could 
 open avenues for innovative material design strategies\, particularly in e
 merging manufacturing routes that utilize powder feedstocks inherently exp
 osed to ambient gases.\nBio\nRavit Silverstein\, Ph.D.\nResearch Scientist
 \nUniversity of California Santa Barbara\nDr. Ravit Silverstein is a resea
 rch scientist in the Materials Department at UCSB\, where she oversees the
  Microscopy and Microanalysis Facility. She earned her Ph.D. in Materials 
 Engineering from Ben-Gurion University\, in tandem with her position as a 
 research associate at the Applied Physics Division\, Soreq Nuclear Researc
 h Center\, Israel. Following that\, she was a post-doctoral fellow in the 
 Materials Department at UCSB from 2018 to 2021. Her research focuses on de
 veloping innovative design paradigms based on metastability\, and pioneeri
 ng processing approaches through metastability pathways\, utilizing techni
 ques such as spectroscopy\, 4D-STEM\, and in situ SEM/TEM experiments\, al
 ong with the development of novel characterization modalities.
CATEGORIES:Seminars
LOCATION:Rhines Hall Room 125\, 549 Gale Lemerand Drive\, Gainesville\, FL\
 , 32611\, United States
GEO:29.644403;-82.350403
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=549 Gale Lemerand Drive\, G
 ainesville\, FL\, 32611\, United States;X-APPLE-RADIUS=100;X-TITLE=Rhines 
 Hall Room 125:geo:29.644403,-82.350403
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