ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
It is well known that FePd alloys are effective as a magneto-thermoelastic actuator material,because they have large magnetostriction and shape memory effect. In order to use the alloys for amicro-actuator, magnetic properties and microstructures have been examined as for rapidly solidifiedFe-29.6 at% Pd alloy ribbons. The ribbons exhibit a large magnetostriction at room temperature andgood shape memory effect. Magnetostriction and coercive force of the ribbons markedly depend onthe direction of the applied magnetic field. Maximum values of magnetostriction and coercive forceare obtained at θ = 85 degree (θ is the angle between the magnetic field and the ribbon plane). Reliefeffects corresponding to the formation of FCT martensite variants are observed on the grains. X-raydiffraction profile at room temperature shows that FCT martensitic phase and FCC parent phasecoexist in the ribbon. Dense striations are observed in the TEM bright field images of FCT martensiteplates. Selected area electron diffraction patterns revealed the striations to be thin twins
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.59.24.pdf
