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SUMMARY:Karel Tůma (Mathematical Institute\, Charles University)
DTSTART:20250512T134000Z
DTEND:20250512T151000Z
DTSTAMP:20260405T175312Z
UID:NSCM/180
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/NSCM/180/">P
 hase-field model for beta-to-omega transformation in titanium alloys</a>\n
 by Karel Tůma (Mathematical Institute\, Charles University) as part of Ne
 čas Seminar on Continuum Mechanics\n\nLecture held in Room K3\,  Faculty 
 of Mathematics and Physics\, Charles University\, Sokolovská 83  Prague 8
 ..\n\nAbstract\nIn this talk\, we revisit a phase separation model involvi
 ng multiple wells\, focusing on $\\beta-\\omega$ transformations observed 
 in titanium alloys. We introduce a novel approach that alters the algebrai
 c form of the interfacial free energy. This modification relaxes the conve
 ntional coercivity requirements on surface tensions within total-spreading
  scenarios and\, crucially\, eliminates the emergence of $\\omega-\\omega$
  mixed phases—structures that are crystallographically forbidden. The ca
 pabilities of the new model are illustrated through basic numerical experi
 ments\, and we also describe the next steps toward more comprehensive\, th
 ree-dimensional simulations of $\\beta-\\omega$ phase evolution in titaniu
 m systems.\n
LOCATION:https://researchseminars.org/talk/NSCM/180/
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