Effect of Nitrogen on Creep Properties of 22Cr-25Ni Austenitic Heat-Resistant Steels

Abstract:

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The effect of nitrogen on creep properties of 22Cr-25Ni austenitic heat-resistant steels with different nitrogen content was studied. The tensile and creep strength increased with increasing nitrogen content. The tensile strength increased due to grain refinement by Nb-rich carbonitride. The creep strength increased with increasing nitrogen content because nitrogen retarded the formation and growth rate of Cr-rich carbide and the growth rate of Nb-rich carbonitride during creep.

Info:

Periodical:

Key Engineering Materials (Volumes 385-387)

Edited by:

H.S. Lee, I.S. Yoon and M.H. Aliabadi

Pages:

425-428

DOI:

10.4028/www.scientific.net/KEM.385-387.425

Citation:

Y. U. Kim et al., "Effect of Nitrogen on Creep Properties of 22Cr-25Ni Austenitic Heat-Resistant Steels ", Key Engineering Materials, Vols. 385-387, pp. 425-428, 2008

Online since:

July 2008

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Price:

$35.00

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