Paper Title:
Softening Kinetics in Nb-Microalloyed TRIP Steels with Increased Mn Content
  Abstract

Two 5Mn-1.5Al TRIP steels with and without Nb microaddition were developed in the present study. The steels contain bainite, martensite, interlath retained austenite and martensite- austenite islands. The paper presents the results of the compression tests carried out at various temperatures using the Gleeble simulator. To analyze the kinetics of static recrystallization in these steels, a softening kinetics were determined in a double-hit compression test. It was found that the dynamic recovery is a main thermally activated process occurring during hot deformation. The Nb microalloyed steel has higher flow stresses and peak strains than the Nb-free steel. A solute drag effect of Nb results in a slower softening kinetics of Nb containing steel. The effects of Mn on the retardation of Nb(C,N) precipitation and hot deformation characteristics are also discussed.

  Info
Periodical
Advanced Materials Research (Volumes 314-316)
Chapter
Surface Engineering/Coatings
Edited by
Jian Gao
Pages
119-122
DOI
10.4028/www.scientific.net/AMR.314-316.119
Citation
A. Grajcar, R. Kuziak, "Softening Kinetics in Nb-Microalloyed TRIP Steels with Increased Mn Content", Advanced Materials Research, Vols. 314-316, pp. 119-122, 2011
Online since
August 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: Klaus Hulka
Abstract:In the recent years several new high strength steel grades have been developed, which exhibit improved cold formability and thus are...
91
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: Leszek Adam Dobrzański, Wojciech Borek
Chapter 18: Steels
Abstract:The high-manganese austenitic steels are an answer for new demands of automotive industry concerning the safety of passengers by the use of...
2053
Authors: Li Hui Wang, Di Tang, Hai Tao Jiang, Ji Bin Liu, Yu Chen
Chapter 3: Steel and Iron Technology
Abstract:Effects of continuous annealing process on microstructure and properties of Si based cold-rolled TRIP Steel were studied. The results show...
472
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