Ferromagnetic to weak-magnetic transition accompanied by bcc to fcc transformation in Fe-Mn-Al alloy

被引：49
作者：
Ando, K. [1 ]
Omori, T. [1 ]
Ohnuma, I. [1 ]
Kainuma, R. [2 ]
Ishida, K. [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Sendai, Miyagi 9808579, Japan
[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
来源：
APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 21期
基金：
日本学术振兴会;
关键词：
aluminium alloys; ferromagnetic materials; iron alloys; magnetic transitions; manganese alloys; martensitic transformations; phase change materials; weak ferromagnetism; NEEDLE-LIKE PHASE; NI-CO-TI; MARTENSITIC-TRANSFORMATION; MAGNETOSTRICTION;
D O I：
10.1063/1.3266848
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Magnetic properties and phase change in Fe-36 at. %Mn-15 at. %Al ternary alloy were investigated. Direct evidence of a ferromagnetic to weak-magnetic transition accompanied by martensitic transformation from the bcc-alpha (A2) phase to the fcc-gamma(') (2M) phase was obtained, where the magnetic state of the parent and the martensite phases are ferromagnetic and weak-magnetic, respectively. The origin of this unique phase change is caused by the peculiar gamma-loop of alpha/gamma equilibrium formed in Fe-Mn-X (X: ferrite stabilizing element) system due to the magnetic effect.
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页数：3
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