INDUCTION HARDENED SHAFT-LIKE PART WITH EXCELLENT TORSIONAL FATIGUE STRENGTH AND STATIC TORSIONAL STRENGTH

PROBLEM TO BE SOLVED: To provide induction hardened shaft-like parts which can combine static fatigue strength with torsional fatigue strength at high levels by securing ≥1,900 MPa static torsional strength and also securing ≥550 MPa fatigue strength at 106number of times of repetition to the servic...

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Bibliographische Detailangaben
Hauptverfasser:	ANAMI GORO, MATSUGASEKO AKIHIRO
Format:	Patent
Sprache:	eng
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 induction hardened shaft-like parts which can combine static fatigue strength with torsional fatigue strength at high levels by securing ≥1,900 MPa static torsional strength and also securing ≥550 MPa fatigue strength at 106number of times of repetition to the service life. SOLUTION: The induction hardened shaft-like parts have a prescribed chemical composition. Moreover, hardness before induction hardening is ≥240 HV and the amount of retained austenite in a heat treated region after the induction hardening is 2 to 20 vol.%. COPYRIGHT: (C)2007,JPO&INPIT