Method for homogenizing alloys susceptible to the formation of carbide stringers and alloys prepared thereby

Patent · Tue Jan 01 00:00:00 EST 1980

OSTI ID:863646

Braski, David N ^[1]; Leitnaker, James M ^[2]

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1. Oak Ridge, TN
2. Kingston, TN

A novel fabrication procedure prevents or eliminates the reprecipitation of segregated metal carbides such as stringers in Ti-modified Hastelloy N and stainless steels to provide a novel alloy having carbides uniformly dispersed throughout the matrix. The fabrication procedure is applicable to other alloys prone to the formation of carbide stringers. The process comprises first annealing the alloy at a temperature above the single phase temperature for sufficient time to completely dissolve carbides and then annealing the single phase alloy for an additional time to prevent the formation of carbide stringers upon subsequent aging or thermomechanical treatment.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4221610
• OSTI ID: 863646
• Country of Publication: United States
• Language: English

Related Subjects

method
homogenizing
alloys
susceptible
formation
carbide
stringers
prepared
novel
fabrication
procedure
prevents
eliminates
reprecipitation
segregated
metal
carbides
ti-modified
hastelloy
stainless
steels
provide
alloy
uniformly
dispersed
throughout
matrix
applicable
prone
process
comprises
annealing
temperature
single
phase
sufficient
time
completely
dissolve
additional
prevent
subsequent
aging
thermomechanical
treatment
metal carbide
dispersed throughout
stainless steels
stainless steel
process comprises
sufficient time
single phase
uniformly dispersed
thermomechanical treatment
phase temperature
metal carbides
phase alloy
novel alloy
uniformly disperse
fabrication procedure
mechanical treatment
alloys prepared
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