Results
Title

Development of Manufacturing Technology for Fe-Mn-Si Alloys with Excellent Low- Cycle Fatigue Properties and Application to Seismic Dampers for Buildings.

Authors

Yuya Chiba; Hiroaki Otsuka; Satoshi Amano; Junpei Inutsuka; Yuuji Iwasaki; Yasuhiko Inoue; Susumu Motomura; Atsumichi Kushibe; Takahiro Sawaguchi; Terumi Nakamura

Abstract

The Fe-15Mn-10Cr-8Ni-4Si alloy, which has excellent low-cycle fatigue durability, was developed as a core material for steel-based vibration dampers that are effective against large-amplitude, long-period earthquake motions, and was put into practical use in 2014. However, manufacturing using small-scale equipment was expensive, so the authors tried manufacturing using stainless steel continuous casting facility and rolling facility, and succeeded in mass production. The authors also developed welding materials and welding techniques to assemble a buckling restraint brace damper with flat plasticizing section and one with cruciform plasticizing section, and successfully put these two types of brace dampers into practical use. The alloy plate has been recognized as an industrial product that can be manufactured with stable quality, and has been approved by the Minister of Land, Infrastructure, Transport and Tourism as a steel material for construction.

Subjects

MASS production; CONTINUOUS casting; ALLOY fatigue; STEEL founding; EARTHQUAKES

Publication

Materials Transactions, 2024, Vol 65, Issue 12, p1583

ISSN

1345-9678

Publication type

Academic Journal

DOI

10.2320/matertrans.MT-M2024034