The influence of Widmanst?tten ferrite on yielding behavior of Nb-containing reinforcing steel bars
Journal
Scripta Materialia
Journal Volume
67
Journal Issue
5
Pages
431-434
Date Issued
2012
Author(s)
Abstract
The engineering stress-strain curves for a series of civil-structured steel bars have been investigated. The yield plateau existed in the corresponding curves for niobium-free steel bars, but continuous plastic flow occurred for niobium-containing steel bars. The results from optical metallography and transmission electron microscopy provide evidence to suggest that the absence of a yield plateau in niobium-containing steel bars is associated with a substantial amount of Widmanstätten ferrite, which forms with a displacive mechanism. © 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
SDGs
Type
journal article