Paper Title:
Texture Formation in High Strength Low Alloy Steel Reheated with Ultrafast Heating Rates
  Abstract

Texture formation during annealing of a 95% cold rolled HSLA steel with 10°C/s and ~3000°C/s was studied with the purpose to investigate the interaction between the recrystallization and the austenite formation as well as the possibility of grain refinement. The recrystallization and austenite formation were monitored by means of optical microscopy (OM), scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD). It was found that at extreme reheating rates of 1000°C/s and higher, the α-γ phase transformation starts before the completion of recrystallization and the deformation texture is partially retained in the samples after annealing. The crystallographic texture observed in the martensitic phase which is the product of intercritical austenite transformation in as-quenched samples, i.e. after the double α-γ-α’ transformation, is the same as the initial cold rolling texture, which is an indication for the texture memory effect. After ultra fast reheating with average reheating rates of 1000°C/s and higher a significant grain refinement was observed with an average ferrite grain size of ~1µm. The obtained final ferrite grain size depends significantly on both the reheating temperature and the reheating rate.

  Info
Periodical
Materials Science Forum (Volumes 702-703)
Chapter
Chapter 6: Materials
Edited by
Asim Tewari, Satyam Suwas, Dinesh Srivastava, Indradev Samajdar and Arunansu Haldar
Pages
798-801
DOI
10.4028/www.scientific.net/MSF.702-703.798
Citation
R. H. Petrov, J. J. Sidor, L. Kestens, "Texture Formation in High Strength Low Alloy Steel Reheated with Ultrafast Heating Rates", Materials Science Forum, Vols. 702-703, pp. 798-801, 2012
Online since
December 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: Guo Bin Li, Zheng Zhi Zhao, Di Tang
Abstract:The microstructure evolution of 780 MPa hot dip galvanized dual-phase (DP) steel at heating stages of the annealing process was analyzed...
1331
Authors: Zhi Gang Wang, Zheng Zhi Zhao, Ai Min Zhao, Jie Yun Ye
Chapter 2: Manufacturing and Design Science
Abstract:Deep drawing dual phase steel was designed and trial-produced in the laboratory. The microstructure and recrystallization texture was studied...
1223
Authors: Li Gao, Qiu Hong Song, Jun Ting Yuan
Chapter 2: Iron and Steel
Abstract:The effect of continuous annealing parameters on the microstructure and magnetic property of cold rolled dual phase steel (DP steel) are...
241
Authors: Jie Yun Ye, Zheng Zhi Zhao, Zhi Gang Wang, Ai Min Zhao, Jing Jing Chen
Chapter 3: Iron and Steel
Abstract:C-Mn-Cr-Mo dual phase steel was piloted in laboratory. OM, SEM, tensile tests and XRD were used to characterize the microstructures,...
670
Authors: Zhuang Li, Di Wu, Wei Lv, Shao Pu Kang, Zhen Zheng
Chapter 1: Materials Engineering. Technologies and Processing
Abstract:In this paper, ultra-high strength dual phase steel was investigated. Thermomechanical processing was conducted by using a laboratory hot...
666