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Mechanical and microstructural properties of nitrogen–high pressure melted Fe–Cr–Ni alloys

Published online by Cambridge University Press:  31 January 2011

J. Rawers ,
G. Asai ,
R. Doan  and
J. Dunning
J. Rawers
Affiliation:
United States Bureau of Mines, Albany Research Center, Albany, Oregon 97321-2198
G. Asai
Affiliation:
United States Bureau of Mines, Albany Research Center, Albany, Oregon 97321-2198
R. Doan
Affiliation:
United States Bureau of Mines, Albany Research Center, Albany, Oregon 97321-2198
J. Dunning
Affiliation:
United States Bureau of Mines, Albany Research Center, Albany, Oregon 97321-2198
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Abstract

A series of iron-chromium-nickel alloys was melted under a nitrogen atmosphere at several different pressures. Nitrogen–high pressure melting (N–HPM) was conducted under pressures ranging from 0.1 to 200 MPa. The total nitrogen concentrations achieved in these alloys were proportional to the square root of the nitrogen pressure used during melting. Nitrogen took the form of soluble interstitial nitrogen and metal nitride precipitates, FexN and CrN. Tensile properties of N–HPM alloys were directly proportional to the nitrogen concentration in the alloy.

Type
Articles
Information
Journal of Materials Research , Volume 7 , Issue 5 , May 1992 , pp. 1083 - 1092
Copyright
Copyright © Materials Research Society 1992

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