Study on CCT Curve and Microstructure Evolution of a Vanadium-Containing Steel Rebar

The microstructure evolution and hardness change were studied for a vanadium-containing steel rebar at different cooling rates. The experimental results show that bainite and martensite gradual emerged with the increasing cooling rate and resulted in an increasing micro-hardness. Bainite or ferrite...

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Published inApplied Mechanics and Materials Vol. 488-489; no. Materials Science, Civil Engineering and Architecture Science, Mechanical Engineering and Manufacturing Technology; pp. 708 - 711
Main Authors Zhong, Zhi Yong, Bai, Rui Guo, Tian, Peng, Han, Chun Liang, Wang, Bao Hua, Gao, Hai, Zhang, Xing Li
Format Journal Article
LanguageEnglish
Published Zurich Trans Tech Publications Ltd 01.01.2014
Subjects
Bainite
Cooling rate
Evolution
Microstructure
Rebar
Reinforcing steels
Steels
TTT curves
Steel Rebar
Microstructure Evolution
Vanadium-Containing
CCT Curve
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Summary:The microstructure evolution and hardness change were studied for a vanadium-containing steel rebar at different cooling rates. The experimental results show that bainite and martensite gradual emerged with the increasing cooling rate and resulted in an increasing micro-hardness. Bainite or ferrite and peartite should gradually disappear when the cooling rate increased to a certain value. The cooling rate should be controlled below 10°C/s to ensure good performances. The CCT curve of HRB400E measured with the inflation method and metallographic-Hardness method could provide the theoretical basis for controlled cooling process.
Bibliography:Selected, peer reviewed papers from the 2014 International Conference on Advanced Engineering Materials and Architecture Science (ICAEMAS 2014), January 4-5, 2014, Xi’an, Shaanxi, China
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISBN:3037859768
9783037859766
ISSN:1660-9336
1662-7482
1662-7482
DOI:10.4028/www.scientific.net/AMM.488-489.708