Analysis of the Stress-Strain Curves of a Fe-Mn-Si Shape Memory Alloy

Analysis of the Stress-Strain Curves of a Fe-Mn-Si Shape Memory Alloy

The stress-induced martensitic transformation of an Fe-30(wt.%)Mn-6(wt.%)Si shape memory alloy has been studied through the tensile deformation and the recovery processes. The results show that the deformation process of Fe-Mn-Si shape memory alloys can be divided into three stages with different me...

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Veröffentlicht in:Materials Characterization 1998, Vol.40 (1), p.37-41
Hauptverfasser: Zhang, Jihua, Chen, Shuchuan, Li, Lei, Hsu, T.y.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Cross-disciplinary physics: materials science
rheology
CRYSTAL-PHASE TRANSFORMATIONS
DEFORMATION
Exact sciences and technology
IRON ALLOYS
MANGANESE ALLOYS
Martensitic transformations
MATERIALS SCIENCE
Metals. Metallurgy
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
SHAPE MEMORY EFFECT
SILICON ALLOYS
STRAINS
STRESSES
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Zusammenfassung:The stress-induced martensitic transformation of an Fe-30(wt.%)Mn-6(wt.%)Si shape memory alloy has been studied through the tensile deformation and the recovery processes. The results show that the deformation process of Fe-Mn-Si shape memory alloys can be divided into three stages with different mechanisms. The first stage is the elastic stage, the second one is related to the γ → ϵ phase transformation, and the third one can be described as plastic deformation. An appropriate thermomechanical training procedure can markedly increase the recovery rate to close to 100%.
ISSN:1044-5803
1873-4189
DOI:10.1016/S1044-5803(97)00104-6