발간논문

Home > KJMM 논문 > 발간논문

Vol.36, No.3, 368 ~ 377, 1998
Title
High Temperature Deformation Behavior of Fe-2Ni-1Cr-Mo Gas Turbine Gear Steels
임차용 , 이태호 , 김성준 Cha Yong Lim , Tae Ho Lee , Sung Joon Kim
Abstract
The high temperature deformation behavior of Fe-2Ni-1Cr-Mo steels was investigated by hot compression tests performed in the temperature range 900℃ to 1200℃ with the strain rates of 10^0/sec, 10^(-1)/sec, 10^(-2)/sec and 10^(-3)/sec. Flow curves for 3.18Mo added steel were explained by hyperbolic sine relationship, ε˙ = A(sinh(0.0146σ_P))^(4.46)exp(-578KJ/RT) due to the dual effects of strain hardening and dynamic recovery during deformation. The activation energy for hot deformation increased with increasing the Mo contents. The softening at high temperatures was mainly induced by dynamic recovery and dynamic recrystallization. Microstructural change after hot deformation was interpreted by Zener-Hollomon parameters(Z). The relationship between microstructure and flow behavior was explained.
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.