Title:
TITANIUM ALLOY, TITANIUM ALLOY BAR, TITANIUM ALLOY PLATE, AND ENGINE VALVE
Document Type and Number:
Japanese Patent JP2023092454
Kind Code:
A
Abstract:
To provide a titanium alloy, a titanium alloy bar, a titanium alloy plate, and an engine valve that maintain ductility and are excellent in fatigue characteristics.SOLUTION: An α+β type titanium alloy of Ti-5Al-2Fe-3Mo base or Ti-6Al-4V base has a two-phase structure composed of an α phase and a β phase, and a maximum area of a segregation abnormal part of the concentration of elements Al, Fe, Mo, and V in a cross section of 2,000 μm2 or less. The segregation abnormal part of the concentration of elements Al, Fe, Mo, and V in a cross section means an aggregate of neighboring measurement points that deviate from average value ±1 mass% of Al and Fe, average value ±1.5 mass% of Mo, and average value ±2 mass% of V in EPMA plane analysis. There are thus provided a titanium alloy, a titanium alloy bar, a titanium alloy plate, and an engine valve that are excellent in fatigue characteristics and ductility.SELECTED DRAWING: None
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Inventors:
TAKEBE HIDENORI
KUNIEDA TOMONORI
KAWAKAMI AKIRA
KUNIEDA TOMONORI
KAWAKAMI AKIRA
Application Number:
JP2022161129A
Publication Date:
July 03, 2023
Filing Date:
October 05, 2022
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C22C14/00
Attorney, Agent or Firm:
Patent Attorney Corporation Kinoshita Intellectual Property Office
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