METASTABLE AUSTENITIC STAINLESS STEEL AND MANUFACTURING METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide a metastable austenitic stainless steel for gasket excellent in balance of strength and elongation, as well as fatigue property.SOLUTION: There is provided a partially recrystallization structure containing, by mass%, C:0.01% or more and 0.1% or less, Si:2.0% or less...

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Bibliographische Detailangaben
Hauptverfasser:	ADACHI KAZUHIKO, SHIBUYA MASAYUKI, FUKUMURA YUICHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a metastable austenitic stainless steel for gasket excellent in balance of strength and elongation, as well as fatigue property.SOLUTION: There is provided a partially recrystallization structure containing, by mass%, C:0.01% or more and 0.1% or less, Si:2.0% or less, Mn:3.0% or less, Cr:10.0% or more and 20.0% or less, Ni:5.0% or more and 10.0% or less, N:0.01% or more and 0.2% or less and the balance Fe with inevitable impurities and having average recrystallization particle diameter of 5 μm or less and percentage of non-recrystallization part remaining effects of processing before a heat treatment of 20% or less.SELECTED DRAWING: None 【課題】強度と伸びのバランス、疲労特性に優れるガスケット用準安定オーステナイト系ステンレス鋼を提供する。【解決手段】質量％にて、Ｃ：０．０１％以上、０．1％以下、Ｓｉ：２．０％以下、Ｍｎ：３．０％以下、Ｃｒ：１０．０％以上、２０．０％以下、Ｎｉ：５．０％以上、１０．０％以下、Ｎ：０．０１％以上、０．２％以下を含有し、残部がＦｅおよび不可避的不純物からなり、平均再結晶粒径が５μｍ以下、かつ、熱処理前の加工の影響を残す未再結晶部の割合が２０％以下の部分再結晶組織である。【選択図】なし