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CATEGORIES:Darwin College Sciences Group
SUMMARY:Novel materials for high temperature structural ap
 plications - Ayan Bhowmik
DTSTART;TZID=Europe/London:20121011T131000
DTEND;TZID=Europe/London:20121011T140000
UID:TALK39227AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/39227
DESCRIPTION:The working conditions inside an aircraft jet engi
 ne are harsh and complex\, and present some of the
  biggest engineering challenges. In a modern jet e
 ngine alone temperatures can vary from -50°C to 20
 00°C on components spinning with more than 10\,000
  revolutions per minute. The rear part of the engi
 ne is the hotter region and is referred to as the 
 turbine section. The fuel efficiency of the jet en
 gine is directly proportional to the temperature a
 t which the turbine section operates – higher the 
 temperature in the turbine\, higher is the engine 
 efficiency. Over the last 50 years\, Ni-based supe
 ralloys have been able to withstand these extreme 
 temperatures and through continual development hav
 e enabled significant increases in the turbine ent
 ry temperature. However\, the scope for further de
 velopment with these Ni-base superalloys is becomi
 ng increasingly limited. Coupled with this\, the d
 rive for an even more energy efficient engine has 
 led to the worldwide search for a successor to the
  superalloys. In this presentation\, the character
 istics of a new class of Cr-based alloys\, which h
 ave been considered as one of the potential altern
 ative to the superalloys in next generation jet en
 gines\, has been discussed and its scope explored.
LOCATION:Entertaining Room\, Darwin College
CONTACT:Sven Friedemann
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