A Model for Niobium Carbonitride Precipitation in Ferrite

2003 ◽  
Vol 426-432 ◽  
pp. 1313-1318 ◽  
Author(s):  
Philippe Maugis ◽  
M. Gouné ◽  
P. Barges ◽  
D. Dougnac ◽  
D. Ravaine ◽  
...  
Keyword(s):  
Niobium Carbonitride ◽  
Carbonitride Precipitation

The Aging Behavior for Low Carbon Bainitic Steel Bearing Cu-Nb

2005 ◽  
Vol 475-479 ◽  
pp. 129-132
Author(s):  
Xue Min Wang ◽  
G.F. Zhou ◽  
Cheng Jia Shang ◽  
Shan Wu Yang ◽  
Xin Lai He
Keyword(s):  
Hardness Measurement ◽  
Optical Microscope ◽  
Quantitative Phase Analysis ◽  
Low Carbon ◽  
Precipitation Behavior ◽  
Niobium Carbonitride ◽  
Aging Precipitation ◽  
Analysis Technique ◽  
Carbonitride Precipitation ◽  
Aging Hardening

By the aid of optical microscope, Hardness measurement, SEM, TEM and the chemical quantitative phase analysis technique, the influence of copper, niobium, and chromium on the aging hardness has been investigated. The aging precipitation behavior and the interaction between various precipitates have also been discussed. The results indicate that since there are multi aging-hardening elements in the steel the aging hardening behaviors are complicated. During the aging the ε－copper， and carbides containing iron and chromium will precipitate. Also, new niobium carbonitride precipitation occurs. These precipitation processes cause marked hardening effect and various hardness peaks. The ε－copper can precipitate at dislocation and lath boundaries preferentially. During the aging the bainite lath united and became wider and then gradually vanished.

Carbonitride precipitation in niobium/vanadium microalloyed steels

1987 ◽  
Vol 18 (3) ◽  
pp. 211-222 ◽  
Author(s):  
J. G. Speer ◽  
J. R. Michael ◽  
S. S. Hansen
Keyword(s):  
Microalloyed Steels ◽  
Carbonitride Precipitation

Resolving the Morphology of Niobium Carbonitride Nano-Precipitates in Steel Using Atom Probe Tomography

2014 ◽  
Vol 20 (4) ◽  
pp. 1100-1110 ◽  
Author(s):  
Andrew J. Breen ◽  
Kelvin Y. Xie ◽  
Michael P. Moody ◽  
Baptiste Gault ◽  
Hung-Wei Yen ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Atom Probe Tomography ◽  
Atom Probe ◽  
Niobium Carbonitride ◽  
Surrounding Matrix ◽  
Transmission Electron ◽  
A New Technique ◽  
Insight Into ◽  
Reconstructed Data ◽  
Magnification Effect

AbstractAtom probe is a powerful technique for studying the composition of nano-precipitates, but their morphology within the reconstructed data is distorted due to the so-called local magnification effect. A new technique has been developed to mitigate this limitation by characterizing the distribution of the surrounding matrix atoms, rather than those contained within the nano-precipitates themselves. A comprehensive chemical analysis enables further information on size and chemistry to be obtained. The method enables new insight into the morphology and chemistry of niobium carbonitride nano-precipitates within ferrite for a series of Nb-microalloyed ultra-thin cast strip steels. The results are supported by complementary high-resolution transmission electron microscopy.

Preparation and properties of multifilament niobium carbonitride superconductor

1975 ◽  
Vol 11 (2) ◽  
pp. 182-184 ◽  
Author(s):  
W. Smith ◽  
R. Lin ◽  
J. Coppola ◽  
J. Economy
Keyword(s):  
Niobium Carbonitride

scholarly journals Effect of Niobium Carbonitride on the Deep Drawability of Low Carbon Niobium Steel Sheets

1975 ◽  
Vol 61 (2) ◽  
pp. 202-213 ◽  
Author(s):  
Taisuke AKAMATSU ◽  
Shigeo TAKANO ◽  
Kunio WATANABE ◽  
Mikio TAUMI
Keyword(s):  
Low Carbon ◽  
Deep Drawability ◽  
Steel Sheets ◽  
Niobium Carbonitride ◽  
Low Carbon Niobium Steel
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