Effects of Nb on Mechanical and Precipitation Behavior in 20% Ni Maraging Steel

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20% Ni managing steels with and without Nb (0.5 w/o) were prepared in vacuum induction melting furnace, followed by hot working and heat treatments. The yield strength of the Nb-containing alloy was about 4% higher than that of Nb-free alloy under managed conditions. However, the charpy impact energy of Nb-containing alloy tested at room temperature was lower by 25%, compared with that of Nb-free alloy, under the managed condition. Precipitates phases formed in the Nb-free alloy were HCP Ni₃Ti(η) and FCC Ni₃(Ti, Al)(γ`), while in the Nb-containing alloy orthorhombic Ni₃Nb appeared in addition to the ηand γ`phases.
Publisher
대한금속·재료학회
Issue Date
1982
Language
Korean
Citation

대한금속·재료학회지, v.48, pp.1098

ISSN
1738-8228
URI
http://hdl.handle.net/10203/58096
Appears in Collection
NE-Journal Papers(저널논문)MS-Journal Papers(저널논문)
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