NDLI: Effect of Mn on Isothermal Transformation of Thermally Grown FeO Scale Formed on Fe

Content Provider	Springer Nature Link
Author	Yoneda, Suzue Hayashi, Shigenari Kondo, Yasumitsu Tanei, Hiroshi Ukai, Shigeharu
Copyright Year	2016
Abstract	The effect of Mn addition on the phase transformation behavior of a thermally grown FeO scale formed on Fe–Mn alloys was investigated. The FeO layer contained Mn, and the Mn/Fe ratio in FeO was similar to that in the alloy substrate. Only 2 wt% Mn addition in the Fe substrate was found to delay significantly the overall transformation time, which includes magnetite (Fe$_{3}$O$_{4}$) seam formation, Fe$_{3}$O$_{4}$ precipitation, and eutectoid product formation. Decrease in the area fraction of eutectoid lamellar region in the oxide scale and increase in the lamellar spacing in the eutectoid structure after the phase transformation of a (Fe, Mn)O scale suggested that Mn addition decreases the driving force for the FeO decomposition via eutectoid reaction, i.e., extends the FeO phase region to lower temperature. 2 wt% Mn addition was estimated to decrease the eutectoid temperature of FeO about 40 °C, which agreed with the calculated Fe–Mn–O phase diagram.
Starting Page	125
Ending Page	138
Page Count	14
File Format	PDF
ISSN	0030770X
Journal	Oxidation of Metals
Volume Number	87
Issue Number	1-2
e-ISSN	15734889
Language	English
Publisher	Springer US
Publisher Date	2016-10-20
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Hot-rolled steel strip Phase transformation of FeO Fe–Mn alloy Mn effect Metallic Materials Inorganic Chemistry Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Metals and Alloys Inorganic Chemistry

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