Ni-base superalloy and manufacturing method thereof

a manufacturing method and superalloy technology, applied in the field of ni-base superalloy and a manufacturing method thereof, can solve the problems of difficult to reduce the price of alloys containing re or ru, difficult to reduce the price of alloys manufactured by a typical casting process, and high-temperature creep and oxidation resistance of alloys, etc., to achieve excellent high-temperature creep and oxidation resistance, improve directional solidification castability, and reduce manufacturing cost
US20160177424A1Inactive Publication Date: 2016-06-23KOREA INST OF MASCH & MATERIALS
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
KOREA INST OF MASCH & MATERIALS
Publication Date
2016-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

According to the present invention, a Ni-base superalloy is comprised 2.0 to 6.0 wt. % of cobalt (Co), 8.0 to 12.0 wt. % of chromium (Cr), 5.0 to 9.0 wt. % of tungsten (W), 3.5 to 6.0 wt. % of aluminum (Al), 3.0 wt. % or less of titanium (Ti), 5.0 to 10.0 wt. % of tantalum (Ta), 0.05 to 0.15 wt. % of carbon (C), 0.02 wt. % or less of boron (B), 0.05 wt. % or less of zirconium (Zr), with the remainder being composed of nickel (Ni) and unavoidable impurities.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Korean Patent Application No. 10-2014-0139830, filed on Oct. 16, 2014 and entitled “NI-BASE SUPERALLOY AND MANUFACTURING METHOD THEREOF”. The disclosures of the foregoing applications are incorporated herein by reference in their entirety.BACKGROUND OF THE INVENTION

[0002] 1. Field of the Invention

[0003] The present invention relates to a Ni-base superalloy and a manufacturing method thereof, and more particularly, to a Ni-base superalloy having a high-temperature creep properties and remarkably reduced in manufacturing cost by not adding rare elements such as Re, Ru, and Mo and a manufacturing method thereof.

[0004] Further, the present invention relates to a Ni-base superalloy and a manufacturing method of the Ni-base superalloy which can maximize the solid-solution hardening effect and improve the directional solidification castability, oxidation resistance, and creep properties while maintaining a phase ...

Claims

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