MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Design Concept and Applications of Fe–Mn–Si-Based Alloys—from Shape-Memory to Seismic Response Control
Takahiro SawaguchiTadakatsu MaruyamaHiroaki OtsukaAtsumichi KushibeYasuhiko InoueKaneaki Tsuzaki
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2016 Volume 57 Issue 3 Pages 283-293

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Abstract

Fe–Mn–Si-based alloys exhibit a shape-memory effect associated with deformation-induced γ → ε martensitic transformation and its reversion. The γ → ε martensitic transformation also enhances mechanical properties, such as strength, hardness, wear-resistance and low-cycle fatigue lives of the alloys. In this article, we review fundamental researches on transformation behavior, microstructural and crystallographic characteristics, and functional and mechanical properties of the Fe–Mn–Si-based alloys, and introduce various examples of their practical applications. A special emphasis is placed on their new application as architectural seismic dampers, which were developed based on a new finding of the passive two-way martensitic transformations under cyclic tensile-compressive loading.

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© 2016 The Japan Institute of Metals and Materials
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