The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel

The thermodynamic precipitation behavior of the second-phase particles in Nb-containing high titanium microalloyed steel has been studied by calculation in this article. It is revealed that FCC_A1#2 is isomorphic with FCC_A1#3 and the contents of Ti and Nb elements are much higher than that of FCC_A...

Full description

Saved in:
Bibliographic Details
Published in:High temperature materials and processes 2022-03, Vol.41 (1), p.111-122
Main Authors: Guo, Xiaopei, Li, Tao, Shang, Zhiqiang, Zhu, Yulin, Li, Guannan
Format: Article
Language:English
Subjects:
Grain growth
High strength low alloy steels
impact toughness
Industrial applications
Mathematical analysis
Mechanical properties
microalloyed steels
Microalloying
Microstructure
Niobium
precipitation behavior
Quenching
Steel
Thermodynamics
Titanium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermodynamic precipitation behavior of the second-phase particles in Nb-containing high titanium microalloyed steel has been studied by calculation in this article. It is revealed that FCC_A1#2 is isomorphic with FCC_A1#3 and the contents of Ti and Nb elements are much higher than that of FCC_A1#3. The influence of different quenching temperatures on microstructure and mechanical properties of steel was also studied. The results indicate that the quenching temperature should be controlled below 1,100°C and the soaking time should not exceed 60 min to avoid abnormal grain growth. The thermodynamic calculation and experimental results have certain theoretical guiding significance for the practical industrial application of high titanium–niobium steel.
ISSN:2191-0324
0334-6455
2191-0324
DOI:10.1515/htmp-2022-0027