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Kyung-Mox Cho 3 Articles
93 Formation Behavior of δ Ferrite Within LB and GTA Weld Zones of Mod. 9Cr-1Mo Steel in Terms of Thermal History
Mod. 9Cr-1Mo강 LB 및 GTA 용접부 열이력에 따른 δ 페라이트 생성거동
Nam-hun Jung, Jang-ho Ahn, Myung-jin Lee, Nam-hyun Kang, Kyung-Mox Cho
정남훈, 안장호, 이명진, 강남현, 조경목
Korean J. Met. Mater. 2018;56(2):93-102.   Published online 2018 Feb 5
DOI: https://doi.org/10.3365/KJMM.2018.56.2.93

Abstract
The toughness and creep strength of Mod. 9Cr-1Mo steel, a ferritic heat resistant steel, are closely related to the amount of delta ferrite remaining in the weld. This study compared the amount of retained δ ferrite in the laser beam (LB) weld with low heat input and the gas tungsten..... More

      
870 Evaluation of the Protective Ability of Air-formed Oxide and Passive Films Formed on Nb-Bearing High Interstitial Stainless Steels
Nb 활용 탄질소 스테인리스강의 부동태 및 대기산화 피막 보호성 연구
Chang-Geun Lee, Heon-Young Ha, Tae-Ho Lee, Kyung-Mox Cho
이창근, 하헌영, 이태호, 조경목
Korean J. Met. Mater. 2017;55(12):870-879.   Published online 2017 Dec 4
DOI: https://doi.org/10.3365/KJMM.2017.55.12.870

Abstract
The effects of Nb on grain refinement and the pitting corrosion resistance of Febalance18Cr10 Mn0.3C0.3NxNb (x = 0.1 and 0.2 wt%) high interstitial alloys were investigated through microstructure analysis and potentiodynamic polarization tests. The resistance to pitting corrosion of the two alloys, covered with a passive film and an air-formed..... More

      
379 Effect of Microstructure on HIC Susceptibility of API X70MS Linepipe Steel
API X70MS 라인파이프용 강의 수소유기균열 감수성에 미치는 미세조직의 영향
Joon-Ho Sung, Ho-Seop Sim, Byung-Gyu Park, Kyung-Mox Cho
성준호, 심호섭, 박병규, 조경목
Korean J. Met. Mater. 2017;55(6):379-385.   Published online 2017 Jun 1
DOI: https://doi.org/10.3365/KJMM.2017.55.6.379

Abstract
The resistance of hydrogen induced cracking (HIC) was investigated with different microstructures of API X70MS steel. Ferrite/acicular ferrite (F/AF), deformed ferrite/acicular ferrite, ferrite/bainite (F/B) and single acicular ferrite (AF) were obtained by thermo-mechanical controlled process (TMCP) with changing rolling and cooling conditions. HIC resistance was found to be affected by..... More

      
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