Improved high temperature creep resistant austenitic alloy

Patent · Fri May 13 00:00:00 EDT 1988

OSTI ID:6409723

Maziasz, P. J.; Swindeman, R. W.; Goodwin, G. M.

An improved austenitic alloy having in wt% 19-21 Cr, 30-35 Ni, 1.5-2.5 Mn, 2-3 Mo, 0.1-0.4 Si, 0.3-0.5 Ti, 0.1-0.3 Nb, 0.1-0.5 V, 0.001-0.005 P, 0.08-0.12 C, 0.01-0.03 N, 0.005-0.01 B and the balance iron that is further improved by annealing for up to 1 hour at 1150-1200/degree/C and then cold deforming 5-15%. The alloy exhibits dramatically improved creep rupture resistance and ductility at 700/degree/C. 2 figs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• Assignee: US Dept. of Energy
• Patent Number(s): PATENTS-US-A7193705
• Application Number: ON: DE89009664
• OSTI ID: 6409723
• Country of Publication: United States
• Language: English

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