Simulation of the controlled rolling and accelerated cooling of a bainitic steel using torsion testing

Controlled rolling, followed by accelerated cooling, was simulated by means of torsion tests. High-strength low-alloy (HSLA) low-carbon (0.08%) bainitic steel containing B, recently developed by the industry as a bainitic steel grade of the API X80 class, was examined. The influence of cooling rate...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials processing technology 2000-04, Vol.100 (1), p.156-162
Main Authors: Cota, A.B, Barbosa, R, Santos, D.B
Format: Article
Language:English
Subjects:
Accelerated cooling
Bainitic steel
Mechanical properties
Torsion testing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Controlled rolling, followed by accelerated cooling, was simulated by means of torsion tests. High-strength low-alloy (HSLA) low-carbon (0.08%) bainitic steel containing B, recently developed by the industry as a bainitic steel grade of the API X80 class, was examined. The influence of cooling rate and finish-cooling temperature on the microstructure and mechanical properties were studied. The final microstructure was predominantly bainitic. For a finish-cooling temperature of 400°C the microstructure consists of fine laths of bainitic ferrite with interlath MA constituent, and increase in the cooling rate leads to a continuous increase of the tensile and yield strengths of 158 and 183 MPa, respectively. The analysis of the results enabled the establishment of quantitative relationships between the accelerated cooling variables and the mechanical properties of steel.
ISSN:0924-0136
DOI:10.1016/S0924-0136(99)00467-7