Authors: E Yu Panchenko Yu I Chumlyakov E E Timofeeva N G Vetoshkina H Maier
Publish Date: 2013/02/20
Volume: 55, Issue: 9, Pages: 1046-1051
Abstract
The results of investigation of the effect of precipitates of different sizes from 5 to 300 nm on the character of stressinduced martensitic transformations the value of stress hysteresis and cyclic stability of superelasticity in Ni49Fe18Ga27Со6 at ferromagnetic single crystals oriented along the bar123 axis are presented It is shown that a martensitic transformation in single crystals of Ni49Fe18Ga27Со6 containing dispersed particles of the γ and γphases measuring up to 30 nm ageing at 673 K for 1 and 4 hours is characterized by storing considerable elastic energy It is revealed that these single crystals exhibit higher cyclic stability of superelasticity and a narrower stress hysteresis compared to those in the initial state and aged at 823 K for 05 hour the latter containing much larger 150–300 nm particles
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