Effects of ordering transformation and grain size on the magnetic properties of Fe-Co alloy

Sung Soo Hong, Dae Gun Kim, Young Do Kim, Kyu Hwan Lee

Research output: Contribution to journalConference article

Abstract

It is well known that when Fe-Co alloy undergoes ordering transformation, excellent softmagnetic properties could be obtained and there are many reports that the magnetic properties of the materials are changed with variation of grain size. In this study, nanostructured (MS) Fe-50at.%Co powders were fabricated by mechanical alloying. The mean grain size of the milled powders was about 10 nm. The NS Fe-Co powders were heat-treated to reduce the internal strain introduced during the milling process and investigate the effect of ordering transformation and grain size on the magnetic properties of Fe-Co alloy. XRD analysis was performed on the powders milled and heat-treated for different time durations. The magnetic properties were evaluated by VSM (vibrating sample magnetometer). With the heat-treatment, the coercivity decreased fairly and the causes for this decrease were suggested as the relaxation of the internal strain and ordering transformation.

Original languageEnglish
Pages (from-to)1236-1239
Number of pages4
JournalAdvances in Powder Metallurgy and Particulate Materials
Publication statusPublished - 2001 Dec 1
EventAdvances in Powder Metallurgy and Particulate Materials - 2001 - New Orleans, LA, United States
Duration: 2001 May 132001 May 17

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