Phase transformations in Fe–Cr–Mn alloys for magnetocaloric applications
Language
en
Article de revue
This item was published in
Journal of Solid State Chemistry. 2019, vol. 277, p. 680-685
Elsevier
English Abstract
The sequence of phase transformations in a Fe–Cr–Mn alloy (known as an austenitic stainless steel) are investigated in order to explore the potential of this rare earth-free material for magnetocaloric applications at high ...Read more >
The sequence of phase transformations in a Fe–Cr–Mn alloy (known as an austenitic stainless steel) are investigated in order to explore the potential of this rare earth-free material for magnetocaloric applications at high temperature. In the lack of high temperature X-ray diffraction the magnetic response and transition temperatures of alloys have been determined by using a Faraday’s Balance apparatus and an extraction vector magnetometer. These characterizations have been complemented by DCS and DTA measurements as well as thermodynamic calculations using Thermocalc. The retained nominal composition is Fe0.59Cr0.16Mn0.25 (referred to as FeCrMn 15/25) shows the targeted reversible transformation. Carbon addition is shown to shift the transition temperature to lower values. The effect of carbon addition on the phase transition and on the magnetocaloric response is discussed. A comparison is made with the chromium-poor Fe–Cr–Ni system.Read less <
English Keywords
Austenitic steels
Magnetocaloric effect
Origin
Hal imported