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Hot Workability and Dynamic Recrystallization Behaviors of Medium-Carbon Cr-Mo Alloys for High Strength Cold Heading Quality Wire Rod
고강도 냉간압조용 중탄소 Cr-Mo 합금강의 고온변형특성 및 동적재결정 거동 평가
YongDeok Jo, HuiJu Lee, SungSil Nam, HyeonWoo Kang, ByoungLok Jang
조용덕, 이희주, 남성실, 강현우, 장병록
Korean J. Met. Mater. 2022;60(6):423-431.   Published online 2022 May 24
DOI: https://doi.org/10.3365/KJMM.2022.60.6.423

Abstract
The hot deformation behavior of medium-carbon Cr-Mo alloy, which has been developed for high strength cold-heading quality wire rod, was investigated to evaluate its hot workability. A flow curve was derived using the hot torsion test, under conditions with temperatures of 1173-1273 K and strain rates of 0.1-1.0 s-1. At..... More

                        
High Temperature Deformation and Continuous Dynamic Recrystallization Behaviors of AA6082 using Processing Maps
공정지도를 이용한 AA6082 합금의 연속 동적 재결정 및 고온 변형 거동
Sang-Min Lee, Ji-Woon Lee, Hyun-Jin Choi, Soong-Keun Hyun
이상민, 이지운, 최현진, 현승균
Korean J. Met. Mater. 2016;54(11):793-801.   Published online 2016 Nov 5
DOI: https://doi.org/10.3365/KJMM.2016.54.11.793

Abstract
Torsion tests were performed on AA6082 samples to investigate their flow softening behavior and to determine optimum process conditions. Based on the experimental data and dynamic materials model, high strain processing maps were established which demonstrate the constitutive relationships among temperature, strain rate, strain and stress. The flow curves exhibited..... More

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