IP Library › Granted Patent US 9,206,495
Granted Patent B2
US 9,206,495 · App. 12/407,002 · Granted Dec 8, 2015

Superalloy powder, method of processing, and article fabricated therefrom

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Quick Facts
Patent No.
US 9,206,495
App. No.
12/407,002
Granted
Dec 8, 2015
Kind
B2
Abstract

A method of processing a superalloy powder includes mechanically alloying nitrogen with superalloy powder particles having at least one nitride-forming element such that each superalloy powder particle includes a microstructure having nitrogen dispersed throughout the microstructure. The powder may then be formed into an article having nitride regions dispersed throughout.

Claims (9)

1. A superalloy powder, comprising:

a plurality of superalloy powder particles having at least one nitride-forming element, each superalloy powder particle including a microstructure having nitrogen dispersed throughout the microstructure, wherein the plurality of superalloy powder particles includes about 6-10 wt % of the nitrogen.

2. The superalloy powder as recited in claim 1 , wherein the plurality of superalloy powder particles are selected from a group consisting of cobalt-based superalloy powder particles, nickel-based superalloy powder particles, nickel-iron-based superalloy powder particles, and combinations thereof.

3. The superalloy powder as recited in claim 1 , wherein the nitrogen is present in nanosized nitride regions that are uniformly dispersed throughout the microstructure.

4. The superalloy powder as recited in claim 1 , wherein a superalloy of the superalloy powder particles includes a composition of about 28 wt % chromium, about 9 wt % nickel, about 21 wt % iron, about 1.25 wt % titanium, about 1 wt % niobium, and a remainder of cobalt and any minor alloying elements.

5. The superalloy powder as recited in claim 1 , wherein the plurality of superalloy powder particles is nickel-based superalloy powder particles.

6. The superalloy powder as recited in claim 1 , wherein the plurality of superalloy powder particles is nickel-iron-based superalloy powder particles.

7. The superalloy powder as recited in claim 1 , wherein the plurality of superalloy powder particles has greater than 4 wt % of the at least one nitride-forming element.

8. The superalloy powder as recited in claim 1 , wherein the plurality of superalloy powder particles includes about 7.5-9 wt % of the nitrogen.

Assignments (6)
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jul 28, 2023
From: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT (AS SUCCESSOR AGENT TO WELLS FARGO BANK, NATIONAL ASSOCIATION (AS SUCCESSOR-IN-INTEREST TO WACHOVIA BANK, N.A.), AS ADMINISTRATIVE AGENT
To: AEROJET ROCKETDYNE OF DE, INC. (F/K/A PRATT & WHITNEY ROCKETDYNE, INC.)
Reel/Frame 064424/0050 →
RELEASE OF SECURITY INTEREST Recorded Aug 5, 2016
From: U.S. BANK NATIONAL ASSOCIATION
To: AEROJET ROCKETDYNE OF DE, INC. (F/K/A PRATT & WHITNEY ROCKETDYNE, INC.)
Reel/Frame 039597/0890 →
NOTICE OF SUCCESSION OF AGENCY (INTELLECTUAL PROPERTY) Recorded Jun 20, 2016
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS THE RESIGNING AGENT
To: BANK OF AMERICA, N.A., AS THE SUCCESSOR AGENT
Reel/Frame 039079/0857 →
CHANGE OF NAME Recorded Jul 30, 2013
From: PRATT & WHITNEY ROCKETDYNE, INC.
To: AEROJET ROCKETDYNE OF DE, INC.
Reel/Frame 030902/0313 →
SECURITY AGREEMENT Recorded Jun 21, 2013
From: PRATT & WHITNEY ROCKETDYNE, INC.
To: U.S. BANK NATIONAL ASSOCIATION
Reel/Frame 030656/0615 →
SECURITY AGREEMENT Recorded Jun 17, 2013
From: PRATT & WHITNEY ROCKETDYNE, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 030628/0408 →