Excellent thermal stability and bulk glass forming ability of Fe-B-Nb-Y soft magnetic metallic glass

被引：50
|
作者：
Lee, Sangmin [1 ,1 ]
Kato, Hidemi [1 ]
Kubota, Takeshi [1 ]
Yubuta, Kunio [1 ]
Makino, Akihiro [1 ]
Inoue, Akihisa [1 ]
机构：
[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan
来源：
MATERIALS TRANSACTIONS | 2008年 / 49卷 / 03期
关键词：
metallic glasses; iron-based alloy; high thermal stability; excellent soft magnetic properties;
D O I：
10.2320/matertrans.MBW200732
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of Y addition on the glass forming ability (GFA) of a Fe-B-Nb marginal glass former, and annealing effects on glassy/supercooled liquid phases as well as soft magnetic properties in the multicomponent Fe-B-Nb-Y alloy system were investigated. The origin of highly improved GFA in the multicomponent system is discussed with related to a characteristic exothermic phase transformation, chemical short range ordering, in the supercooled liquid region due to the positive heat of mixing between Nb-Y elements. The separating tendency between Nb and Y elements is considered to suppress precipitation of metastable Fe23B6 and alpha-Fe crystalline phases, thus to result in highly improving GFA and distinct high thermal stability against heat treatment of the alloy system. In addition, a glassy ring was fabricated by copper mold casting and magnetic properties were investigated before/after heat treatment.
引用
收藏
页码：506 / 512
页数：7
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