Title:
NI-BASED ALLOY AND HEAT TREATMENT FURNACE COMPONENT FORMED OF SAME
Document Type and Number:
WIPO Patent Application WO/2022/138645
Kind Code:
A1
Abstract:
The present invention provides: a nickel-based alloy which has excellent alkali corrosion resistance and excellent weldability; and a heat treatment furnace component which is formed of this Ni-based alloy. This Ni-based alloy, which has excellent alkali corrosion resistance and excellent weldability, contains from 8.0% by mass to 16.0% by mass of Al, 0.01% by mass or more of Zr and 0.001% by mass or more of B, with the balance being made up of Ni and unavoidable impurities, while excluding the cases where Al is more than 12.0% by mass but less than 13.5% by mass. Meanwhile, the total amount of Zr and B is 3.0% by mass or less. With respect to this Ni-based alloy, at least an Ni3Al phase and one of an Ni phase, an NiAl phase and an NiZr compound phase are precipitated in the surface; and the area ratios of the precipitated Ni3Al phase, Ni phase, NiAl phase and NiZr compound phase satisfy 0.2 < (Ni phase + NiAl phase + NiZr compound phase)/(Ni3Al phase) < 2.0.
Inventors:
OGAWA YOSHIYUKI
KAMITSUJI AYANO
ASANO SOICHI
ENJO YOHEI
HASHIMOTO KUNIHIDE
KAMITSUJI AYANO
ASANO SOICHI
ENJO YOHEI
HASHIMOTO KUNIHIDE
Application Number:
PCT/JP2021/047332
Publication Date:
June 30, 2022
Filing Date:
December 21, 2021
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
C22C1/02; C22C19/03
Domestic Patent References:
| WO2021132350A1 | 2021-07-01 |
Foreign References:
| JPS62274042A | 1987-11-28 | |||
| JPS62274040A | 1987-11-28 | |||
| JPS63225722A | 1988-09-20 |
Attorney, Agent or Firm:
MARUYAMA & CO. (JP)
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