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VERSION:2.0
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BEGIN:VEVENT
DTSTAMP:20261002T134233Z
UID:https://www.mpie.de/events/17282/3755656
DTSTART:20190115T080000Z
DTEND:20190115T090000Z
CLASS:PUBLIC
CREATED:20190110T100412Z
DESCRIPTION:This presentation provides an overview of recent developmental 
 efforts at Oak Ridge National Laboratory (ORNL) on heat-resistant ferrous 
 materials with Laves-phase strengthening for fossil-fired energy conversio
 n systems. Laves phases are attractive as second-phase strengtheners in Fe
 -base alloys\, including ferritic and austenitic stainless steels\, since 
 most of the Fe-rich Laves phases (Fe<sub>2</sub>M intermetallic compounds\
 , M: Nb\, Mo\, W\, Zr\, Ti\, etc.) are thermodynamically equilibrated with
  BCC- or FCC-Fe solid solution. Because of the characteristics\, relativel
 y easy control of second-phase dispersion is expected through a traditiona
 l “solution-and-annealing” process combined with proper alloying addit
 ions. The thermal stability of the Laves phase precipitates at elevated te
 mperature was found to be controlled and improved through combinations of 
 multiple Laves-phase forming elements\, which guides the alloy design and 
 provides effective strengthening of high-temperature structural materials 
 for the extended periods of time. Laves-phase precipitation in Fe-base mat
 rix can be expected in relatively large composition/temperature ranges\, w
 hich also allows designing the alloys with proper surface protections\, su
 ch as chromia- or alumina-scale formation on the surface. This leads to pr
 oposing and designing new high-temperature structural materials to be used
  in extreme environments such as Advanced USC or supercritical CO<sub>2</s
 ub> cycle applications. The presentation will also introduce various devel
 opmental efforts in Fe-base\, Cr-base\, and Cu-base alloys with Laves-phas
 e strengthening at ORNL in the last decades. Research supported by the U.S
 . Department of Energy\, Office of Fossil Energy\, the Crosscutting Resear
 ch Program.\nSpeaker: Dr. Yukinori Yamamoto
LAST-MODIFIED:20190110T102838Z
LOCATION:Max-Planck-Institut für Eisenforschung GmbH\, Room: Large Confere
 nce Room No. 203
ORGANIZER;CN=on invitation of Dr. Frank Stein and Prof. Gerhard Dehm:mailto
 :stein@mpie.de
SUMMARY:MPIE Colloquium: Recent Advances in Heat-resistant Structural Mater
 ial Development with Laves Phases at Oak Ridge National Laboratory
URL;VALUE=URI:https://www.mpie.de/events/17282/3755656
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