US2003056864A1PendingUtilityA1

Method for age-hardening of a superalloy

16
Priority: Aug 3, 2001Filed: Aug 2, 2002Published: Mar 27, 2003
Est. expiryAug 3, 2021(expired)· nominal 20-yr term from priority
Inventors:Seyed Saman RazaviShamseddin MirdamadiHossein ArabiJerzy Szpunar
C22F 1/10
16
PatentIndex Score
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Claims

Abstract

The invention provides a process for age-hardening of a superalloy comprising the steps of treating the superalloy in solution followed by one-dimensional quenching in oil. The superalloy then undergoes rapid induction aging in a controlled Argon atmosphere medium-frequency induction furnace.

Claims

exact text as granted — not AI-modified
We claim:  
     
         1 . A process for age-hardening of a superalloy comprising the following steps: 
 i. treating the superalloy in solution;    ii. one-dimensional quenching the superalloy in oil; and    iii. rapid induction aging of the superalloy.    
     
     
         2 . A process for age-hardening of a superalloy according to  claim 1 , wherein the superalloy is a nickel-base superalloy.  
     
     
         3 . A process for age-hardening of a superalloy according to  claim 2 , wherein the superalloy is treated in solution for 2 hours at a temperature of about 1125° C.  
     
     
         4 . A process for age-hardening of a superalloy according to  claim 1  wherein the superalloy is one-dimentionally quenched in oil to room temperature.  
     
     
         5 . A process for age-hardening of a superalloy according to  claim 1 , wherein the rapid induction aging includes placing the superalloy in a controlled Argon atmosphere medium-frequency induction furnace.  
     
     
         6 . A process for age-hardening of a superalloy according to  claim 5 , wherein the rapid induction aging superalloy is in a controlled atmosphere at a temperature in the range of 750° C. to 800° C. for between 2 and 15 minutes.  
     
     
         7 . A process for age-hardening of a nickel-base superalloy comprising the following steps: 
 i. treating the nickel-base superalloy in solution for 2 hours at about 1125° C.;    ii. one-dimensional quenching the nickel-base superalloy in oil to room temperature; and    iii. rapid induction aging of the nickel-base superalloy in a controlled Argon atmosphere medium-frequency induction furnace in the range of 750° C. to 800° C. for between 2 and 15 minutes.    
     
     
         8 . A superalloy manufactured by the process according to  claim 1 .  
     
     
         9 . A nickel-base superalloy manufactured by the process according to  claim 1 .  
     
     
         10 . A nickel-base superalloy manufactured by the process according to  claim 7.

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