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...

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Main Authors: Guo Xiaopei, Li Tao, Shang Zhiqiang, Zhu Yulin, Li Guannan
Format: Article
Language:English
Published: De Gruyter 2022-03-01
Series:High Temperature Materials and Processes
Subjects:
Online Access:https://doi.org/10.1515/htmp-2022-0027
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author Guo Xiaopei
Li Tao
Shang Zhiqiang
Zhu Yulin
Li Guannan
author_facet Guo Xiaopei
Li Tao
Shang Zhiqiang
Zhu Yulin
Li Guannan
author_sort Guo Xiaopei
collection DOAJ
description 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.
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spelling doaj.art-a70d83f97b884929ad7bc25c1664a0fa2022-12-22T02:01:42ZengDe GruyterHigh Temperature Materials and Processes2191-03242022-03-0141111112210.1515/htmp-2022-0027The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steelGuo Xiaopei0Li Tao1Shang Zhiqiang2Zhu Yulin3Li Guannan4College of Materials Science and Engineering, Chongqing University, Chongqing, 400044, P. R. ChinaCollege of Metallurgy and Energy, North China University of Science and Technology, 063000, P. R. ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing, 400044, P. R. ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing, 400044, P. R. ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing, 400044, P. R. ChinaThe 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.https://doi.org/10.1515/htmp-2022-0027precipitation behaviormicroalloyed steelsimpact toughness
spellingShingle Guo Xiaopei
Li Tao
Shang Zhiqiang
Zhu Yulin
Li Guannan
The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel
High Temperature Materials and Processes
precipitation behavior
microalloyed steels
impact toughness
title The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel
title_full The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel
title_fullStr The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel
title_full_unstemmed The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel
title_short The precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel
title_sort precipitation behavior of second phase in high titanium microalloyed steels and its effect on microstructure and properties of steel
topic precipitation behavior
microalloyed steels
impact toughness
url https://doi.org/10.1515/htmp-2022-0027
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