Different Magnetic Field Effects on the <inline-formula> <tex-math notation='LaTeX'>$arepsilon- u$ </tex-math></inline-formula> Phase Transformation Between (Mn,Zn)–Al and Mn–Al–C

Mitsui Yoshifuru; Kobayashi Ryota; Takanaga Yudai; Takaki Akio; Umetsu Rie Y.; Takahashi Kohki; Mizuguchi Masaki; Koyama Keiichi

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$arepsilon- u$

Phase Transformation Between (Mn,Zn)–Al and Mn–Al–C

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Different Magnetic Field Effects on the $arepsilon- u$ Phase Transformation Between (Mn,Zn)–Al and Mn–Al–C

机译：不同磁场对 $ varepsilon- tau $ 之间的相变（Mn， Zn）–Al和Mn–Al–C

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In-magnetic-field annealing (IFA) effects on Zn-modified Mn-Al and Mn-Al-C were investigated at the annealing temperature of 573 K, which was around their TC. Mn53Zn2Al45 showed the magnetic-field-induced acceleration of the phase transformation to L1(0)-phase (tau-phase) and the suppression of that to nonferromagnetic equilibrium phase. For Mn55Al45C2, IFA effects were not clearly detected. These different magnetic field effects were discussed by the difference of the mechanism in stabilization of tau-phase. It is found by a thermal analysis that the modification of Zn stabilized tau-phase against is an element of-phase, realizing acceleration of transformation to tau-phase. The addition of carbon stabilized is an element of-phase against tau-phase. The ineffectiveness of in-field annealing for Mn-Al-C is due to the stabilization of is an element of-phase and the reduction of the Curie temperature. The combination of Zn modification and IFA is realized to synthesize high fraction of tau-phase for short annealing time and low annealing temperature.

机译：在573 K的退火温度（接近其TC）下研究了磁场内退火（IFA）对Zn修饰的Mn-Al和Mn-Al-C的影响。 Mn53Zn2Al45表现出磁场诱导的向L1（0）相（tau相）的相变加速以及对非铁磁平衡相的抑制。对于Mn55Al45C2，未清楚检测到IFA效应。通过tau相稳定机理的不同讨论了这些不同的磁场效应。通过热分析发现，对Zn稳定的tau相的改性是相的元素，实现了向tau相转变的加速。添加稳定的碳是相对于tau相的元素。 Mn-Al-C的现场退火无效是由于相元素的稳定和居里温度的降低。实现了锌改性和IFA的结合，可以在短退火时间和低退火温度下合成高含量的tau相。

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来源
《IEEE Transactions on Magnetics》 |2019年第2期|1-4|共4页
作者
Mitsui Yoshifuru; Kobayashi Ryota; Takanaga Yudai; Takaki Akio; Umetsu Rie Y.; Takahashi Kohki; Mizuguchi Masaki; Koyama Keiichi;
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作者单位

Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan;

Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan;

Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan;

Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan;

Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan;

Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan;

Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan;

Kagoshima Univ, Grad Sch Sci & Engn, Kagoshima 8900065, Japan;

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正文语种 eng
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关键词
High magnetic field; Mn-Al; permanent magnet;

机译：强磁场锰铝永磁体;

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Different Magnetic Field Effects on the $arepsilon- u$ Phase Transformation Between (Mn,Zn)–Al and Mn–Al–C

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