Paper Title:
Microstructure and Mechanical Properties of ULCB Steels Affected by Advanced TMCP Technology
  Abstract

Good combination of high strength and high toughness has been considered as a critical factor of ultra-high strength steel plates. In this paper, a novel high strength steel plate of HSLA type containing Cu with 910MPa yield strength and 1163MPa tensile strength has been developed using an advanced TMCP (thermo-mechanical control processing) technology. The steel plates provide excellent combination of high strength, toughness and deformability. Microstructural evolution and mechanical properties of this steel during hot-working have been investigated. It is demonstrated that, at the relatively higher finish rolling temperature and cooling rate, the microstructure consists of acicular and granular bainite structures and a small amount of low bainite /martensite whose lath width is approximately 200~300nm. For the as-rolled conditions, despite the high strength and so low yield ratio, impact energy about 154J and fully ductility fracture at -90°C can still be obtained as documented for as-hot rolled plates.

  Info
Periodical
Edited by
Enhou Han, Guanghong Lu and Xiaolin Shu
Pages
289-295
DOI
10.4028/www.scientific.net/MSF.689.289
Citation
Z. Y. Hou, Y. B. Xu, D. Wu, W. H. Sun, S. E. Hu, G. D. Wang, "Microstructure and Mechanical Properties of ULCB Steels Affected by Advanced TMCP Technology", Materials Science Forum, Vol. 689, pp. 289-295, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hak Cheol Lee, Xiao Dan Wu, Young Min Kim, Nack J. Kim
Abstract:Effects of acicular ferrite and retained austenite on the mechanical properties of bainite-base steels were investigated. Various morphology...
780
Authors: Lei Zheng, Shan Gao
Abstract:The X70 grade and X80 grade pipeline steel strip with acicular ferrite microstructure have been researched and developed. The properties of...
4750
Authors: Zhi Qiang Cao, Ai Bing Zhang, Deng Luo, Zheng Hai Xia, Yong Dong Zhang, Kai Ming Wu
Abstract:A ultra low carbon high strength steel heavy plate (60∼80mm thick) was produced with TMCP at Xiangtan Steel. The steel has a good...
57
Authors: O. Uzlov, A. Malchere, V.I. Bolshakov, Claude Esnouf
Abstract:Low carbon-manganese wrought steels with addition of Ti-Al-N have been treated in order to obtain acicular ferrite structure. The...
209
Authors: Yong Jie Ma, Xun He, Guang Liang Zhang
Chapter 2: Dynamics and Vibration
Abstract:In high strength pipeline steel rolling technology, the control of final cooling temperature of different microstructure, different...
310