발간논문

Home > KJMM 논문 > 발간논문

Vol.33, No.4, 544 ~ 551, 1995
Title
High Temperature Continuous Deformation Behavior of Nb - Microalloyed Structural Steel
조상현Sang Hyun Cho, 오명석Myung Suk Oh, 소찬영Chan Young So, 유연철Yeon Chul Yoo
Abstract
The torsion tests in the range of 790∼1100℃, 3.7×10^(-1)∼5.0×10^0/sec were performed to study the high temperature continuous deformation behavior of Nb-microalloyed structural steels and carbon steel. The flow curves exhibited the characteristic of dynamic recrystallization(DRX). The dependence of the flow stress on temperature(T) and stain rate(ε·) was expressed by power law, ε˙ = A(σ^n′)_pexp(-Q/RT). The dynamically recrystallized grain related to the value of the Zener-Hollomon parameter Z. Under the Z value of 10^(13) order it was found that the grain size ranged from 20㎛ in Nb microalloyed steel to 30㎛ in carbon steel.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.