We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The Mechanism for Coarse Nb-Rich Particle Formation in Steel.
- Authors
Abraham, Sunday; Bodnar, Rick; Lonnqvist, Johan; Hagström, Joacim; Rydgren, Eleonora
- Abstract
Fine and coarse Nb-containing particles (Nb(C,N) and NbC) can be found in steel alloyed with niobium. The fine Nb-containing particles (precipitates) are of the order of several nanometers, typically ≤ 50 nm, in diameter, while the coarse Nb-containing particles (coarse Nb-rich particles) can have lengths ranging from submicron to hundreds of microns. The mechanism for the formation of the fine niobium carbide or carbonitride precipitates is well established, and their beneficial effects on strength and toughness are well documented. On the other hand, coarse Nb-rich particles are detrimental to the performance of the steel. Despite the plethora of studies on coarse Nb-rich particles, no experimental evidence has been offered for the proposed mechanisms of their formation. In this paper, the results of detailed and comprehensive experimental work that provide a novel understanding of the mechanism of formation of coarse Nb-rich particles are presented.
- Subjects
NIOBIUM alloys; STEEL; PARTICULATE matter; NIOBIUM
- Publication
Metallurgical & Materials Transactions. Part A, 2021, Vol 52, Issue 9, p3727
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-021-06324-3