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VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
X-WR-CALNAME:MS Thesis Defense\, Alireza Fadavi Boostani
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20261007T125734Z
UID:tag:localist.com\,2008:EventInstance_40419931313481
DTSTART:20220707T163000Z
DTEND:20220707T173000Z
DESCRIPTION:Title:\n\n" Manufacturing of Nickel Based Superalloys Composite
 s Using Binder Jetting Additive Manufacturing Process"\n\nABSTRACT:\n\n \n
 \nEnhancing density of the parts manufactured by powder based additive man
 ufacturing is time consuming\, limiting the easy application of these AM p
 rocesses. In this study\, we show promising effects of graphene sheets as 
 densifier agents for binder jetting of water atomized alloy 625 powders\, 
 enabling a more economical feedstock material than commonly used gas atomi
 zed powders. An approach called graphene encapsulating was used for in-sit
 u production of graphene sheets decorating SiC particles during ball milli
 ng. The agglomerates were then mixed with water atomized alloy 625 powders
  and binder jetted using the ExOne printer. The microstructure and propert
 ies of the sintered composites were compared with printed and sintered gas
  and water atomized alloy 625 powders without using graphene.  \n\nThis st
 udy also demonstrates a significant effect of the graphene encapsulating p
 rocess on diminishing the agglomeration of nanoparticles which is a crucia
 l challenge in fabrication of metal and polymer matrix nanocomposites. We 
 show a sponge-like capability of graphene sheets to nullify agglomeration 
 tendency of nanoparticles during liquid phase sintering. This sponge morph
 ology of crumpled graphene sheets stimulates circulation of liquid metals 
 containing nanoparticles within solidifying semi-solid alloy 625 powders a
 nd thereby enhancing sintering density and microhardness of the fabricated
  composites.
LOCATION:Benedum Hall\, Room 611 
SUMMARY:MS Thesis Defense\, Alireza Fadavi Boostani
URL;VALUE=URI:https://calendar.pitt.edu/event/ms_thesis_defense_alireza_fad
 avi_boostani
CATEGORIES:Defenses
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