Paper Title:
Effect of Severe Cold-Rolling and Subsequent Annealing on Microstructure and Properties of in-Situ Composite Steel
  Abstract

In this paper, the process of severe cold-rolling and annealing for Q235 steel with lath martensite has demonstrated a new promising technique for producing in-situ composite multi-nanolayer steel. Cold rolling and subsequent annealing have great impact on microstructure evolution as well as mechanical properties. In the as-rolled state, the strength (b 2112 MPa) is approximately four times increased than as-received material, which is attributed to work hardening and grain refining during cold rolling. As cold-rolled sample subjected to further annealing below 500 °C, deformed microstructure underwent further recovery and recrystallization and finally became refined equiaxed grains; ultrafine ferrite grains, nano-carbides precipitated uniformly were seen in the specimen annealed at 500 °C, and the phenomenon of fracture delamination was observed from the specimens, the delamination plane was parallel to the rolling plane, in-situ composite weak interfaces effect has great impact on the fracture surface. Annealing at and above 600 °C resulted in coarse ferrite grains with spheroidized coarse carbides, causing grain growth.

  Info
Periodical
Materials Science Forum (Volumes 667-669)
Edited by
Jing Tao Wang, Roberto B. Figueiredo and Terence G. Langdon
Pages
157-160
DOI
10.4028/www.scientific.net/MSF.667-669.157
Citation
J. Zhao, H. Zhang, Y. M. Yang, J. C. Chen, Q. X. Wen, Z. Wang, L. T. Zhang, Y. W. Gao, "Effect of Severe Cold-Rolling and Subsequent Annealing on Microstructure and Properties of in-Situ Composite Steel", Materials Science Forum, Vols. 667-669, pp. 157-160, 2011
Online since
December 2010
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: Jie Shi, Wen Quan Cao, Han Dong
Abstract:In this study a C-Mn High Strength Low Alloy steel (HSLAs) was processed by quenching and austenite reverted transformation during annealing...
238
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: 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: Ho Jun Bang, Ha Guk Jeong, Jong Beom Lee
B. Eco-Materials Processing and Design, Multifunctional Materials
Abstract:Mg alloy sheets exhibit the yield strength of 280 MPa and elongation of 18 % by rolling at 423 K. Elongation of Mg alloy sheets was improved...
190
Authors: Masataka Yoshino, Chikara Kami
Chapter 2: Contributed Papers
Abstract:Grain refinement is attracting attention as a strengthening method which does not depend on the alloying elements added to steels. Many...
2228