Journal of University of Science and Technology Beijing. 2014, (01) Core

Hot deformation behavior of a new microalloyed C-Mn-Al high strength steelChinese Full Text

WEI Hai-lian;LIU Guo-quan;XIAO Xiang;ZHAO Hai-tao;DING Hang;KANG Ren-mu;School of Materials Science and Engineering,University of Science and Technology Beijing;State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing;Sichuan Chuanwei Co. Ltd.;

Abstract: The compressive deformation behavior of a new microalloyed high-strength steel containing 1. 79% Al was investigated at temperatures from 900 to 1100 ℃ and strain rates from 0. 01 to 30 s- 1on a Gleeble-1500 thermo-simulation machine. A hyperbolic sine equation with strain-dependent constants was developed for the steel. The predicted flow stress curves by the constitutive equation well agreed with experimental results,indicating that the constitutive equation can give a relatively accurate estimate of flow stress for the steel. According to processing map analysis,the dynamic recrystallization zone of the steel was determined as 1000 to 1100 ℃ and 0. 01 to 1 s- 1. Microstructure observation showed that dynamic recrystallization occurred in this dynamic recrystallization zone,and in the instability zone,flow localization and necklace structure was observed. Finally,a combination of the constitutive equation and processing map provided a method for comprehensively investigating the hot deformation behavior of the steel under different conditions.

Keywords：

high strength steel; hot deformation; constitutive equations; processing maps; compression testing;

DOI：
10.13374/j.issn1001-053x.2014.01.008
Series：
Subject：
Classification Code：
TG142.1

Mobile Reading

Read on your phone instantly

Step 1
Scan QR Codes

"Mobile CNKI-CNKI Express" App

Step 2
Open“CNKI Express”

and click the scan icon in the upper left corner of the homepage.

Step 3
Scan QR Codes

Read this article on your phone.
HTML
CAJ Download
PDF Download

Contents

Hot deformation behavior of a new microalloyed C-Mn-Al high strength steelChinese Full Text

WEI Hai-lian;LIU Guo-quan;XIAO Xiang;ZHAO Hai-tao;DING Hang;KANG Ren-mu;School of Materials Science and Engineering,University of Science and Technology Beijing;State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing;Sichuan Chuanwei Co. Ltd.;

Read on your phone instantly

Citation Network

Related Literature