Modelling of microstructure and properties in HSLA steels

被引：0

作者：

Militzer, M ^{[1
]}

Sun, WP ^{[1
]}

Poole, WJ ^{[1
]}

Purtscher, P ^{[1
]}

机构：

[1] Univ British Columbia, Ctr Met Proc Engn, Vancouver, BC V6T 1Z4, Canada

来源：

THERMEC '97 - INTERNATIONAL CONFERENCE ON THERMOMECHANICAL PROCESSING OF STEELS AND OTHER MATERIALS, VOLS I-II | 1997年

关键词：

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Microstructural evolution and properties have been investigated in two HSLA steels, one microalloyed with V, and the other with Nb. The austenite-to-ferrite transformation during cooling on the run-out table of a hot strip mill can be described, at least in a first approximation, with a model previously developed for plain low-carbon steels. The ferrite grain size is predicted as a function of the transformation start temperature. An extension of the model is proposed to account for the effect of retained strain in the Nb microalloyed steel. Precipitation strengthening during coiling is simulated with aging tests. The aging curves are analyzed using the Shercliff-Ashby model. STEM investigations support the precipitation kinetics assumed in this strengthening model. The results of the prediction for microstructure and mechanical properties have been verified using industrial coil samples.

引用

页码：2093 / 2099

页数：7