TITLE

Stress-induced and thermoelastic properties of Ni–Fe–Al melt-spun ribbon

AUTHOR(S)
Chernenko, V. A.; Kanth, B. Rajini; Mukhopadhyay, P. K.; Kaul, S. N.; Villa, E.; Gambardella, A.; Besseghini, S.
PUB. DATE
October 2008
SOURCE
Applied Physics Letters;10/6/2008, Vol. 93 Issue 14, p141904
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Lattice parameters, elastic modulus, internal friction, superelasticity, and shape memory effect are studied in the vicinity of martensitic transformation (MT) exhibited by the Ni55Fe20Al25 melt-spun ribbon. In comparison to the melt-spun ribbons of other ferromagnetic shape memory alloys, Ni–Fe–Al ribbon has abnormally low elastic modulus, a record-breaking strength (>350 MPa), and large recoverable strain (up to 5%) due to both the superelastic and ordinary shape memory effects. The critical stress versus temperature phase diagram consists of two straight lines, indicating the formation of different stress-induced martensitic phases. The structural and thermodynamic results proved to be self-consistent.
ACCESSION #
34850448

 

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