Delta ferrite-containing austenitic stainless steel resistant to the formation of undesirable phases upon aging

Patent · Thu Jan 01 04:00:00 EST 1981

OSTI ID:863881

Leitnaker, James M ^[1]

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1. Kingston, TN

Austenitic stainless steel alloys containing delta ferrite, such as are used as weld deposits, are protected against the transformation of delta ferrite to sigma phase during aging by the presence of carbon plus nitrogen in a weight percent 0.015-0.030 times the volume percent ferrite present in the alloy. The formation of chi phase upon aging is controlled by controlling the Mo content.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4265983
• OSTI ID: 863881
• Country of Publication: United States
• Language: English

Related Subjects

/428/219/
015-0
030
aging
alloy
alloys
alloys contain
alloys containing
austenitic
austenitic stainless
carbon
chi
containing
content
controlled
controlling
delta
delta ferrite
deposits
ferrite
ferrite-containing
formation
nitrogen
percent
phase
phases
plus
presence
protected
resistant
sigma
stainless
stainless steel
steel
steel alloy
steel alloys
times
transformation
undesirable
volume
volume percent
weight
weight percent
weld
weld deposit