The evolution of Ti₂Ni precipitates in annealed Ti₅₁Ni₄₉ shape memory melt-spun ribbons

摘要

Guinier-Preston (GP) zones are observed in as-spun and 200/350°C annealed Ti-rich Ti₅₁Ni₄₉ ribbons. For ribbons annealed at 350-600°C for 1 h, nanosized Ti₂Ni precipitates with Moiré fringes are observed and the spacing of the Moiré fringes increases with the increase of annealing temperature. The analysis of Moiré fringes spacing indicates that Ti-deficiency and equilibrium Ti₂Ni precipitates form in ribbons annealed at 350/400°C and at 500/600°C, respectively.View full textDownload full textKeywordsmelt spinning, shape memory alloys, annealing, precipitation, transmission electron microscopyRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500831003630773