DAMPING ALLOY

WIPO Patent Application WO/2014/103884

A1

An Fe-Mn-(Cr,Ni)-Si based damping alloy which contains Cr and/or Ni and may further contain Al, characterized by: containing, as composition components, 5 to 28 mass% of Mn, 0 to 15 mass% of Cr, 0 to less than 15 mass% of Ni, more than 0 to less than 6.5 mass% of Si, and 0 to less than 3 mass% of Al with the balance being Fe and unavoidable impurities; and satisfying the relationships: [%Ni]+0.5[%Mn] > 0.75[%Cr]+1.125[%Si]+2[%Al]; and 37 < [%Mn]+[%Cr]+2[%Ni]+5[%Al] < 45 (wherein [%Ni], [%Mn], [%Cr], [%Si] and [%Al] represent the contents (mass%) of Ni, Mn, Cr, Si and Al respectively). Thus, a mass-producible Fe-Mn-(Cr,Ni)-Si based alloy for an elastoplastic damper can be provided, said alloy exhibiting a lowered offset yield strength, a lowered stress amplitude after repeated tension and compression deformation, and an increased number of cycles to fracture, and being usable without maintenance even after a long-period earthquake ground motion.

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SAWAGUCHI TAKAHIRO (JP)
SAKURAYA KAZUYUKI (JP)
OGAWA KAZUYUKI (JP)
NAGASHIMA NOBUO (JP)
FURUYA YOSHIYUKI (JP)
SEKIDO NOBUAKI (JP)
KOBAYASHI SATORU (JP)
NAKAMURA TERUMI (JP)
NISHIMURA TOSHIYA (JP)
TSUZAKI KANEAKI (JP)
KUSHIBE ATSUMICHI (JP)
INOUE YASUHIKO (JP)
SUGATA AKIHIRO (JP)
MARUYAMA TADAKATSU (JP)
SUGIMURA SEIICHI (JP)
CHIBA YUYA (JP)

PCT/JP2013/084119

July 03, 2014

December 19, 2013

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NAT INST FOR MATERIALS SCIENCE (JP)
TAKENAKA CORP (JP)
AWAJI MATERIA CO LTD (JP)

C22C38/00; C22C38/58; C21D8/00

JPH1036943A	1998-02-10
JPS6455361A	1989-03-02
JPS62112751A	1987-05-23
JPH05263858A	1993-10-12
JP2001146855A	2001-05-29
JPH05106367A	1993-04-27
JPH0526274A	1993-02-02
JP2006194287A	2006-07-27
JP2008056987A	2008-03-13
JP2011214127A	2011-10-27

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NISHIZAWA TOSHIO (JP)
Toshio Nishizawa (JP)

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