Discontinuous yielding induced by the addition of nickel to interstitial-free steel

Interstitial-free steels containing 1–3% Ni were tensile tested. A clear yield point and yield point elongation were observed in each steel, even though they contained no solute carbon or nitrogen in the ferrite matrix. The mechanism could be explained by grain refinement strengthening enhanced by t...

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Bibliographic Details
Published in:Scripta materialia 2014-07, Vol.82, p.13-16
Main Authors: Akama, D., Nakada, N., Tsuchiyama, T., Takaki, S., Hironaka, A.
Format: Article
Language:English
Subjects:
Carbon
Discontinuity
Elongation
Ferrite
Grain boundary strengthening
Hall–Petch effect
Interstitial-free (IF) steels
Nickel
Nitrogen
Steels
Yield phenomena
Yield point
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Summary:Interstitial-free steels containing 1–3% Ni were tensile tested. A clear yield point and yield point elongation were observed in each steel, even though they contained no solute carbon or nitrogen in the ferrite matrix. The mechanism could be explained by grain refinement strengthening enhanced by the addition of Ni, which is derived from the increase in Hall–Petch coefficient caused by grain boundary segregation.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2014.03.012