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SUMMARY:Supercompatibility and its role on fatigue in shape memory materia
 ls - Eckhard Quandt (Christian-Albrechts-Universität zu Kiel)
DTSTART:20190115T114500Z
DTEND:20190115T123000Z
UID:TALK116887@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Functional shape memory alloys need to operate reversibly and 
 repeatedly. This is especially crucial for many future applications such e
 .g. elastocaloric cooling\, where more than ten million transformation cyc
 les will be required. In recent years examples of unprecedented functional
  and structural fatigue resistance and lowered hysteresis in shape memory 
 alloys have been achieved by combining conditions of supercompatibility be
 tween phases with suitable grain size and a favorable array of fine precip
 itates (1). The relative roles of these factors\, especially in the case o
 f the more demanding stress-induced phase transformations\, will be discus
 sed (2) also in view of elastocaloric applications.  (1) Chluba\, C.\; Ge\
 , W.\; Lima de Miranda\, R.\; Strobel\, J.\; Kienle\, L.\; Quandt\, E.\; W
 uttig\, M.: Ultralow-fatigue shape memory alloy films\, Science 348 (2015)
 \, 1004-1007. (2) Gu\, H.\; Bumke\, L.\; Chluba\, C.\; Quandt\, E.\; James
 \, R.D.: Phase engineering and supercompatibility of shape memory alloys\,
  Materials Today 21 (2018)\, 265-277. 
LOCATION:Seminar Room 1\, Newton Institute
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