Designing Fe–Mn–Si alloys with improved low-cycle fatigue lives. (1st April 2015)

• Record Type: Journal Article
• Authors: Sawaguchi, Takahiro; Nikulin, Ilya; Ogawa, Kazuyuki; Sekido, Kaoru; Takamori, Susumu; Maruyama, Tadakatsu; Chiba, Yuya; Kushibe, Atsumichi; Inoue, Yasuhiko; Tsuzaki, Kaneaki
• Is Part Of: Scripta materialia. Volume 99(2015)
• Page Start: 49
• Page End: 52
• Publication Date: 2015-04-01
• Subjects: Shape memory alloys (SMA) -- Fe–Mn–Si -- Fatigue -- Damping -- Martensitic phase transformation; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2014.11.024
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract : A new design concept for improving the low-cycle fatigue lives of Fe–Mn–Si-based alloys is proposed. The degree of reversibility of the dislocation motion can be increased by setting the stacking fault energy to approximately 20 mJ m −2, enhancing the Ni-equivalent amounts with respect to the Cr-equivalent amounts and setting the Si concentration to 4 wt.%. Under these conditions, an Fe–15Mn–10Cr–8Ni–4Si alloy with a low-cycle fatigue life of approximately 8000 cycles for a total strain range of 2.0% could be developed.