Effect of Aluminum and Nitrogen on Microstructure of Ultra-Low-Carbon Nb-IF Steels

The effect of aluminum and nitrogen on the microstructure of the ultra-low-carbon Nb-IF (interstitial free) steel was investigated. Steel with higher aluminum and nitrogen contents showed equiaxed ferrite grains in the hot-rolled steel and continuously annealed steel. Decrease in either aluminum or...

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Bibliographic Details
Published in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2009-06, Vol.40 (6), p.1280-1283
Main Author: Jeong, W. C.
Format: Article
Language:English
Subjects:
Aluminum
Applied sciences
Carbon
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cold
Communication
Exact sciences and technology
Grain boundaries
Hot rolling
Materials Science
Metallic Materials
Metals. Metallurgy
Microstructure
Nanotechnology
Nitrogen
Phosphorus
Precipitation hardening
Steel
Structural Materials
Surfaces and Interfaces
Thin Films
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Summary:The effect of aluminum and nitrogen on the microstructure of the ultra-low-carbon Nb-IF (interstitial free) steel was investigated. Steel with higher aluminum and nitrogen contents showed equiaxed ferrite grains in the hot-rolled steel and continuously annealed steel. Decrease in either aluminum or nitrogen content, however, resulted in the mixed microstructure of small and large grains with wavy grain boundaries in the hot-rolled steel and the pancake-shaped ferrite grains in the continuously annealed steel.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-009-9825-1