Martensitic transformation in Fe-Mn-(Si,Ge,Sn) alloys

被引：0
|
作者：
Monastyrsky, GE
Koval, YN
Firstov, GS
van Humbeeck, J
机构：
[1] Natl Tech Univ Ukraine, UA-03056 Kiev, Ukraine
[2] Natl Acad Sci Ukraine, Inst Phys Met, UA-03142 Kiev, Ukraine
[3] Katholieke Univ Leuven, MTM, B-3001 Louvain, Heverlee, Belgium
来源：
JOURNAL DE PHYSIQUE IV | 2003年 / 112卷
关键词：
D O I：
10.1051/jp4:2003900
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Effect of Ge and Sn on the martensitic transformation and shape memory effect in Fe-Mn(22-26at.%)-Si alloys is investigated by the substitution of Si by Ge or Sn from 1.5% to 6at. %. It was found that addition of Ge causes the transformation to perform in several steps. Substitution of Sn makes this effect more superior. Resistometry, calorimetric and dilatometer measurements reveal that one of the transformation stages is c lose to second order. It is characterized by small values of the thermal hysteresis and heat effect. Shape memory effect measurements have shown that only one of the transformations has a distinct shear nature. At the same time the relief typical for martensitic transformation was observed by optical microscopy. The nature of both stages of transformation is discussed.
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收藏
页码：355 / 358
页数：4
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