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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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개질된 COG (coke oven gas)를 이용한 2단 DRI (direct reduced iron) 공정의 공정변수 결정
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고민정, 김수영, 조종오, 이재랑, 김용하, 원용선
Korean J. Met. Mater.
2023;61(8):573-580. Published online 2023 Jul 24
DOI:
https://doi.org/10.3365/KJMM.2023.61.8.573
Abstract
On the road to carbon neutrality, a great deal of attention is being paid to emerging technologies such as the DRI (direct reduced iron) process. This study proposes a two-stage DRI process using reformed COG (coke oven gas), and determined optimal process parameters. The reduction and carbonization of Carajás iron.....
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핫스탬핑용 30MnB5강의 템퍼링 조건에 따른 미세조직 및 기계적 물성 연구
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정준영, 박상천, 신가영, 이창욱, 김태정, 최민수
Korean J. Met. Mater.
2018;56(11):787-795. Published online 2018 Nov 5
DOI:
https://doi.org/10.3365/KJMM.2018.56.11.787
Abstract
The effects of tempering condition on the microstructure and mechanical properties of 30MnB5 hot stamping steel were investigated in this study. Before the tempering, hot-stamped 30MnB5 steel was composed of only α′-martensite microstructure without precipitates. After the tempering at 180 ℃ for 120 min, nano-sized ε-carbides were precipitated in the.....
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