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Influence of Carbon Content and Isothermal Heat Treatment Temperature on the Microstructure and Mechanical Properties of Ultra-High Strength Bainitic Steels
초고강도 베이나이트강의 미세조직과 기계적 성질에 미치는 탄소함량과 항온열처리 온도의 영향
Seung Hwangbo, Hong-Bum Lee, Young-Beum Song, Jinhee Ham, Hong-Kyu Kim, Dong-Woo Suh
황보승, 이홍범, 송영범, 함진희, 김홍규, 서동우
Korean J. Met. Mater. 2019;57(6):335-342.   Published online 2019 May 16
DOI: https://doi.org/10.3365/KJMM.2019.57.6.335

Abstract
The effect of carbon content and isothermal heat treatment conditions on the microstructure evolution and mechanical properties of ultra-high strength bainitic steels was investigated. A reduction in carbon content from 0.8 wt% to 0.6 wt% in super-bainite steel with typical chemistry effectively improved not only the Charpy impact toughness but..... More

                        
Temperature Dependency of the Tensile Characteristics and Transition of Fracture Behaviors in a Novel Infiltrated TiC-SKD11 Composites
TiC-SKD11 함침 복합재의 온도에 따른 인장 특성과 파괴거동 변화
Nu-Ri Oh, Sang-Kwan Lee, Seung-Chan Cho, Il-Guk Jo, Keum-Cheol Hwang, Dae-Ha Kim, Young-Tae Cho, Dong-Woo Suh, Hyun-Uk Hong
오누리, 이상관, 조승찬, 조일국, 황금철, 김대하, 조영태, 서동우, 홍현욱
Korean J. Met. Mater. 2017;55(3):156-164.   Published online 2017 Mar 3
DOI: https://doi.org/10.3365/KJMM.2017.55.3.156

Abstract
A composite having 60 vol% of TiC particles was successfully fabricated by the infiltration of molten SKD11 tool steel into a TiC preform. The density of this composite was achieved to be 25% lighter than conventional steels. The penetration of the liquid metal reached geometrically complex regions without any interfacial..... More

      
Effect of Process Parameters on the Angular Distribution of Sputtered Cu Flux in Long-Throw Sputtering System
Hee-Young Shin, Tae-Ho Kim, Jun-Woo Park, and Hyun-Chul Sohn
Seung Hwangbo, Hong-Bum Lee, Young-Beum Song, Jinhee Ham, Hong-Kyu Kim, Dong-Woo Suh
황보승, 이홍범, 송영범, 함진희, 김홍규, 서동우
Received 2019 Feb 27     Accepted 2019 May 21     Published online 2019 Jun 5
Abstract
In this work, the angular distribution of the sputtered Cu flux in a long throw sputtering (LTS) system is extracted from the comparison of experimentally-measured profiles of deposited films with simulated profiles of films in overhang contact structure. And effects of the sputtering process parameters such as Ar pressure during sputtering,... More
      
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