Ni-BASED ALLOY, HEAT-RESISTANT AND CORROSION-RESISTANT COMPONENT, AND HEAT TREATMENT FURNACE COMPONENT

Patent metadata

Field	Value
Publication number	US-2023011769-A1
Application number	US-202017783495-A
Country	US
Kind code	A1
Filing date	Dec 23, 2020
Priority date	Dec 27, 2019
Publication date	Jan 12, 2023
Grant date	—

Abstract

The present invention provides a Ni-based alloy, a heat-resistant and corrosion-resistant component, and a heat treatment furnace component, all of which have excellent corrosion resistance and mechanical strength at high temperatures. The Ni-based alloy of the present invention consists of, by mass %, Al: more than 5.0% and up to 26.0%, and Zr: more than 0% and up to 5.0%, the balance being Ni and unavoidable impurities. The Ni-based alloy preferably contains more than 0% and up to 5.0% of B, by mass %, in a combined amount with Zr. Moreover, it is preferable that the Ni-based alloy has P value and Q value and satisfies a relationship of Q value ≥ 0.89 × P value - 0.53, when the P value is obtained from a formula -18.95 + 0.1956 × Ni% + 0.1977 × Al% + 0.2886 × Zr% + 12.4 × B%, and the Q value is obtained by dividing an area percentage of Ni 3 Al precipitated on the surface of the alloy by 100.

First claim

1 . - 14 . (canceled)

15 . A Ni-based alloy consisting of, by mass %:
Al: more than 5.0% and up to 26.0%, and Zr: more than 0% and up to 5.0%, the balance being Ni and unavoidable impurities.

16 . The Ni-based alloy according to claim 15 , wherein the alloy contains more than 0% and up to 5.0% of B, by mass %, in a combined amount with Zr.

17 . The Ni-based alloy according to claim 16 , wherein the alloy contains at least 0.001% of B, by mass %.

18 . The Ni-based alloy according to claim 15 , wherein the alloy has Ni 3 Al precipitated on a surface thereof.

19 . The Ni-based alloy according to claim 18 , wherein the alloy has P value and Q value, and satisfies a relationship of Q value ≥ 0.89 xP value - 0.53, when the P value is obtained from a formula -18.95 + 0.1956 × Ni% + 0.1977 ×Al% + 0.2886 × Zr% + 12.4 × B%, and the Q value is obtained by dividing an area percentage of Ni 3 Al precipitated on the surface of the alloy by 100.

20 . The Ni-based alloy according to claim 18 , wherein the alloy has P value and Q value, and satisfies a relationship of Q value ≥ 1.75 × P value - 1.1, when the P value is obtained from a formula 5.91 - 0.0512 × Ni% - 0.0612 × Al%, and the Q value is obtained by dividing an area percentage of Ni 3 Al precipitated on the surface of the alloy by 100.

21 . The Ni-based alloy according to claim 15 , wherein the alloy contains at least 8.0% of Al, by mass %.

22 . The Ni-based alloy according to claim 15 , wherein the alloy further contains 0.001% to 4.0% of Y, by mass %.

23 . The Ni-based alloy according to claim 15 , wherein the alloy further contains 0.001% to 4.0% of Ta, by mass %.

24 . The Ni-based alloy according to claim 15 , wherein the alloy further contains 0.001% to 5.0% of W, by mass %.

25 . A heat-resistant and corrosion-resistant component made of the Ni-based alloy according to claim 15 .

26 . A heat treatment furnace component made of the Ni-based alloy according to claim 15 .

27 . The heat treatment furnace component according to claim 26 , wherein
the heat treatment furnace component is a retort used for firing a cathode material, and has an inner surface to come into contact with the cathode material and an outer surface to be heated by heating means; and the outer surface has a hardness higher than the inner surface.

28 . A heat treatment furnace component made of a Ni-based alloy consisting of, by mass %,
Al: more than 5.0% and up to 26.0%, the balance being Ni and unavoidable impurities.

Assignees

• Kubota Kk

Inventors

• KAMITSUJI Ayano
• Asano Soichi
• ENJO Yohei
• Hashimoto Kunihide

Classifications

• C22C19/007

  with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent · CPC title

• F27B5/10

  Muffles · CPC title

• C22C19/03 Primary

  based on nickel · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• F27B7/00

  Rotary-drum furnaces, i.e. horizontal or slightly inclined · CPC title