Superplastic ferrous duplex-phase alloy and a hot working method

Details Superplastic ferrous duplex-phase alloy and a hot working method Superplastic ferrous duplex-phase alloy and a hot working method

1986-03-27

1988-01-26

Rutledge, L. Dewayne

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 59, 420 73, 420 74, 420108, 420109, 420117, 420584, 148325, 148327, 148329, 148332, 148334, 148335, C22C 3802, C22C 3804

Patent

active

047216000

ABSTRACT:
A superplastic hot working method for a duplex-phase, nitrogen-containing ferrous alloy and stainless steel, and a superplastic duplex-phase ferrous alloy are disclosed. The ferrous alloy comprises: at least one of Si and Mn in an amount of not less than 0.5% and not less than 1.7%, respectively; and N: at least 0.01% in solid solution, wherein Si eq and Mn eq which are defined as:

REFERENCES:
patent: 3736131 (1973-05-01), Espy
patent: 4055448 (1977-10-01), Fujikura et al.
U.K. Search Report for Application No. 8607770.

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