Interaction between antiferromagnetic transition and martensitic transformation in Fe-Mn-Si based shape memory alloys

被引：0
|
作者：
吴晓春
HSU T.Y.
徐祖耀
机构：
[1] China
[2] China Laboratory of Solid State Microstructures
[3] Department of Materials Science
[4] Nanjing 210008
[5] Nanjing University
[6] Shanghai 200030
[7] Shanghai Jiao Tong University
来源：
Progress in Natural Science:Materials International | 1999年 / 06期
基金：
中国国家自然科学基金;
关键词：
Fe-Mn-Si based; shape memory alloys; antiferromagnetic transition; martensitic transformation; internal friction;
D O I：
暂无
中图分类号：
TG139.6 [];
学科分类号：
080502 ;
摘要：
Internal friction and elastic modulus of Fe-Mn-Si, Fe-Mn-Si-RE and Fe-Mn-Si-Cr shape memory alloys were measured from 150 K to 600 K by using an electrostatic audio-frequency internal friction instrument. The mtei-nal friction characteristies of the antiferromagnetic transition and γ-ε martensitic transformation as well as the interaction between these two transitions have been investigated. The results show that the γ→ε martensitic transformation is partly restrained, but can still continue below the Neel temperature ( TNγ) . When the temperature TN is slightly below the MS temperature, the internal friction peak associated with the paramagnetic → antiferromagnetic transition disappears upon cooling due to the occurrence of the γ→ε martensitic transformation, and only the internal friction peak associated with the γ→ε martensitic transformation can be observed. When the Neel temperature ( TNγ) is much below the temperature MS, the internal friction peaks appear near TNγ and MS respective
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页码：55 / 63
页数：9
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