Paper Title:
Microstructure Refinement in Non-Quenched and Tempered Vanadium-Nitrogen Steel
  Abstract

In order to study the effect of second phase precipitation on the refinement of microstructures during static recrystallization, the former researched non-quenched and tempered vanadium-nitrogen steel was chosen to conduct single and double-pass compression experiment by hot deformation simulator and the fraction of static recrystallization at different isothermal times was calculated. The precipitates were analyzed by TEM with accessories of EDS and energy filter. The results showed that precipitates in austenite during the pass isothermal times were mainly the (Ti, V) (C, N) with size varying from 55 to 140 nm, and during cooling and phase transformation were mainly vermicular VC with length in the range of 22-100nm and width 13-39nm. The key factor for refining the final structures: during short isothermal times is static recrystallization; during static recrystallization stagnation plateau is intragranular ferrites nucleated on precipitation phases; after stagnation plateau is intragranular ferrites promoted by the local solute-poor regions.

  Info
Periodical
Advanced Materials Research (Volumes 295-297)
Chapter
Chapter 1: Materials Properties
Edited by
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
Pages
991-996
DOI
10.4028/www.scientific.net/AMR.295-297.991
Citation
H. B. Li, H. Y. Liu, Y. Huang, "Microstructure Refinement in Non-Quenched and Tempered Vanadium-Nitrogen Steel", Advanced Materials Research, Vols. 295-297, pp. 991-996, 2011
Online since
July 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: M.S. Koo, Ping Guang Xu, J.H. Li, Yo Tomota, O. Muransky, Petr Lukáš, Yoshitaka Adachi
Abstract:A challenge was made to examine the micro-structural evolution during thermomechanically controlled processing (TMCP) by in situ neutron...
419
Authors: J.S. Kang, S.S. Ahn, C.Y. Yoo, Chan Gyung Park
Abstract:In the present study, focused ion beam (FIB) technique was applied to make site-specific TEM specimens and to identify the 3-dimensional...
73
Authors: J.M. Rodriguez-Ibabe, P. Uranga, B. López
Keynotes
Abstract:The microstructural heterogeneities in steels may have different origins. The tendency in industry to decrease the total amount of reduction...
157
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
Authors: Zhuang Li, Di Wu, Wei Lv, Zhen Zheng, Shao Pu Kang
Chapter 1: Materials Engineering. Technologies and Processing
Abstract:In this paper, double deformation test was conducted in a MMS-300 thermomechanical simulator. Austenite static recrystallization kinetics of...
310