Shape memory and associated properties in Fe–Mn–Si-based ribbons produced by melt-spinning

doi:10.1016/j.jmmm.2008.02.105

Journal of Magnetism and Magnetic Materials

Volume 320, Issue 14, July 2008, Pages e164-e167

https://doi.org/10.1016/j.jmmm.2008.02.105 Get rights and content

Abstract

Four Fe–Mn–Si alloys, Fe₆₂Mn₃₂Si₆, Fe₆₂Mn₂₀Si₅Cr₈Ni₅, Fe₆₂Mn₁₆Si₅Cr₁₂Ni₅ and Fe₆₅Mn₉Si₇Cr₁₀Ni₉, were obtained by the melt-spinning method. The samples were structurally, magnetic and shape memory effect (SME) investigated, both “as quenched” and thermally treated. The Mn-rich compositions show different phase, magnetic behavior and SME in comparison with Mn-poor compositions. The thermal treatments generate transformation between the two existing majority phases (α and γ), related magnetization and SME behavior. The features are derived from the corroboration of structural, magnetic interaction and magnitude of SME data.

References (9)

A. Sato et al.
Acta Metall.
(1982)
M. Szpryngacz et al.
J. Mag. Mat
(2003)
H. Otsuka et al.
ISIJ Int.
(1990)
Qin Zuoxiang et al.
J. Mater. Sci.
(1996)

There are more references available in the full text version of this article.

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Citation Excerpt :
So, this material does not need any heat treatment. Many years passed until Valeanu et al. [18] resumed the melt-spinning of Fe–Mn–Si-based alloys, focusing on the role of Mn composition on the magnetic and shape memory properties. In this work, we produced ribbons by the melt-spinning technique using a Fe–15Mn–5Si–9Cr–5Ni stainless type as precursor, and then analyzed the ribbons’ microstructures, performed phase stability analysis, and evaluated shape memory properties.
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Shape memory and associated properties in Fe–Mn–Si-based ribbons produced by melt-spinning

Abstract

Acta Metall.

J. Mag. Mat

ISIJ Int.

J. Mater. Sci.