Phase transformation in steel alloys for magnetocaloric applications; Fe_85-xCr₁₅Ni_x and Fe_85-xCr₁₅Mn_x as prototypes

2012/01/19 by Petros Souvatzis, Souvatzis, P., Erna K. Delczeg‐Czirjak +5
Materials Science · #FOS: Physical sciences #Magnetic Properties and Applications #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Shape Memory Alloy Transformations

paper · pdf · doi:10.48550/arxiv.1201.4176

openalex publication_date 2012/01/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We here show by first principles theory that it is possible to achieve a structural and magnetic phase transition in common steel alloys like Fe₈₅Cr₁₅, by alloying with Ni or Mn. The predicted phase transition is from the ferromagnetic body centered cubic (bcc) phase to the paramagnetic face centered cubic (fcc) phase. The relatively high average magnetic moment of ∼1.4μ_B/atom predicted at the transition suggests that stainless steel potentially can present a magnetocaloric effect strong enough to make these alloys good candidates for refrigeration applications operating at and around room temperature.

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