발간논문

Home > KJMM 논문 > 발간논문

Vol.28, No.4, 367 ~ 376, 1990
Title
High Temperature Deformation of Al - Li Alloy by Hot torsion
오병문Byung Moon Oh, 유연철Yeon Chul Yoo
Abstract
The high temperature deformation of Al-Li alloy (8090) has been studied in the temperature range from 320℃ to 500℃ and the strain rate range from 3.46 × 10^(-1)/sec to 2.07 × 10^0/sec by hot torsion. Judging from the flow curves and the change of structure produced by continuous deformation, the high temperature restoration mechanism of Al-Li alloy was the dynamic recovery. The constitutive equation relating the strain rate to the flow stress and temperature could be described by exponential equation, ε˚=A exp (βσ) exp (-Q/RT). The value of constants of constitutive equation were A=2.013 × 10^(13), β=0.0755, activation energy=207KJ/㏖, respectively.
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.