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Solidification Behavior of Iron-Niobium and Iron-Carbon-Niobium alloys

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Title: Solidification Behavior of Iron-Niobium and Iron-Carbon-Niobium alloys
Authors: Kudoh, Masayuki Browse this author
Tezuka, Masataka Browse this author
Matsuura, Kiyotaka Browse this author →KAKEN DB
Keywords: iron-niobium alloy
iron-carbon-niobium alloy
undercooling, delta/gamma transformation
secondary dendrite arm spacing
glass-encased method
Issue Date: 2005
Publisher: Trans Tech Publications
Journal Title: PRICM 5: Proceedings of the 5th Pacific Rim International Conference on Advanced Materials and Processing
Start Page: 2567
End Page: 2570
Abstract: The undercooling and solidified structure of Fe-Nb binary alloys and Fe-0.1mass%C-Nb ternary alloys were investigated by changing Nb concentration from 0.5 to 6mass%. A glass-encased method was used for achieving high undercooling, in addition to a conventional solidification method. The specimen was furnace-cooled followed by quenching from 1723K or air-cooling from 1473K. As a result, the degree of undercooling in the Fe-Nb alloys solidified by the glass-encased method was higher than that in the specimen solidified by the conventional method, while that in the Fe-0.1mass%C-Nb alloy solidified by the glass-encased method was not so high. The solidified structure in all alloys that were quenched atγ formation temperature has dendritic morphology in spite of δ/γ transformation. The secondary arm spacing of the dendrite became fine with increase in niobium concentration.
Description: Materials Science Forum, Volume 475-479
Rights: the original is available online at
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 工藤 昌行

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