발간논문

Home > KJMM 논문 > 발간논문

Vol.23, No.12, 1331 ~ 1340, 1985
Title
A study on Dynamic Recrystallization of Copper by Hot Torsion
유연철Yeon Chul Yoo, 곽흥식H . S . Kwak
Abstract
The hot deformation behavior of copper has been studied in the temperature range from 0.55 Tm to 0.65 Tm and the strain rate range from 1.26×10(-3) S(-1) to 5.71×10(-3) by hot torsion. The hot softening mechanism of copper has been found to result from dynamic recrystallization through the flow curve and change of microstructure. Strain for the onset of dynamic recrystallization is represented by ε_c=0.039 LnZ-0.531 using Zener-Hollomon parameter Z and strain for the completion of dynamic recrystallization is represented by ε_x=0.276 LnZ-4.571. The time required for dynamically recrystallized grains decreased with increasing deformation temperature and strain rates. The dynamically recrystallized grains are smaller than statically recrystallized grains, and hardness is larger than statically recrystallized grains.
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.