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Effects of Applied Cathodic Current on Hydrogen Infusion, Embrittlement, and Corrosion-Induced Hydrogen Embrittlement Behaviors of Ultra-High Strength Steel for Automotive Applications
자동차용 초고강도 강재의 전기아연도금 시 음극전류 인가조건이 수소 유입, 취화 및 부식유기 수소취화 거동에 미치는 영향
Hye Rin Bang, Jin Sung Park, Sang Heon Kim, Tae Yeob Kim, Min-Suk Oh, Sung Jin Kim
방혜린, 박진성, 김상헌, 김태엽, 오민석, 김성진
Korean J. Met. Mater. 2023;61(3):145-156.   Published online 2023 Feb 24
DOI: https://doi.org/10.3365/KJMM.2023.61.3.145

The effects of the electrogalvanizing conditions (a combination of plating current and time) on hydrogen infusion, embrittlement, and corrosion-induced hydrogen embrittlement (HE) behaviors of ultra-high strength steel were examined. A range of experimental and analytical methods, including electrochemical impedance spectroscopy, hydrogen permeation, polarization, and slow strain rate test, were employed...... More

                   Web of Science 2  Crossref 1
Effects of Adding CO<sub>2</sub> to Low Level H<sub>2</sub>S Containing Aqueous Environments on the Corrosion and Hydrogen Penetration Behaviors of High-Strength Steel
미량의 H2S 함유 수용액 환경 내 CO2 첨가가 고강도 철강소재의 부식 및 수소침투거동에 미치는 효과
Seung Min Ryu, Jin-seong Park, Hye Rin Bang, Sung Jin Kim
류승민, 박진성, 방혜린, 김성진
Korean J. Met. Mater. 2021;59(8):533-544.   Published online 2021 Jul 5
DOI: https://doi.org/10.3365/KJMM.2021.59.8.533

The effects of adding CO2 to low level H2S containing aqueous environment on the corrosion and hydrogen penetration behaviors of high-strength steel were evaluated using a range of experimental and analytical methods. The corrosion rate of the steel sample exposed to a low level of H2S dissolved in an aqueous..... More

                   Web of Science 3  Crossref 3
Effects of Al-Si Coating Thickness on 22MnB5 in Hot Stamping Wear
Al-Si 도금층 두께가 22MnB5강의 핫스탬핑 공정 마모에 미치는 영향
Min Ki Ji, Hyunsung Son, Jinkeun Oh, Seongwoo Kim, Kyungmok Kim, Tea-Sung Jun
지민기, 손현성, 오진근, 김성우, 김경목, 전태성
Korean J. Met. Mater. 2020;58(8):573-582.   Published online 2020 Jul 27
DOI: https://doi.org/10.3365/KJMM.2020.58.8.573

Al-Si coated ultra-high strength steels (UHSS) are widely used in automotive applications because of their high strength-to-weight ratio, corrosion protection and good weldability. The hot stamping (also called hot press forming) process is an effective and suitable technique for producing automotive parts from Al-Si coated UHSS. However, critical issues, such..... More

                   Web of Science 3  Crossref 3
Study on the Effect of the Localized Electrode Degradation on Weldability During an Electrode Life Test in Resistance Spot Welding of Ultra-High Strength Steel
초고강도강 저항 점용접 연속타점시 전극의 국부적 합금화 현상이 용접품질 저하에 미치는 영향 연구
Jae-Won Kim, Siva Prasad Murugan, Nam Hyun Kang, Yeong-Do Park
김재원, Siva Prasad Murugan, 강남현, 박영도
Korean J. Met. Mater. 2019;57(11):715-725.   Published online 2019 Nov 5
DOI: https://doi.org/10.3365/KJMM.2019.57.11.715

Evaluation of electrode degradation in resistance spot welding of 1180TRIP steel was carried out through an electrode life test, and weldability testing was performed by the measurement of the nugget size, the peak load analysis and the measurement of the electrode tip size at 30 intervals. Analysis of the change..... More

                   Web of Science 7  Crossref 6
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

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

                   Web of Science 1  Crossref 1
Enhanced Mechanical Properties by Directional Solidification and Cold Drawing in Cu Added Zn-Al Alloys
Cu가 첨가된 Zn-Al 합금에서 일방향응고 및 냉간인발에 따른 기계적 특성 향상
Hae Chang Jeong, Min Soo Kim, Jee Hyuk Ahn, Sung Hwan Lim, Seung Zeon Han, Jehyun Lee, Kwang Ho Kim
정해창, 김민수, 안지혁, 임성환, 한승전, 이재현, 김광호
Korean J. Met. Mater. 2017;55(8):529-536.   Published online 2017 Aug 1
DOI: https://doi.org/10.3365/KJMM.2017.55.8.529

The lamellar structure of two phases, the Zn-rich and Al-rich phases, is formed in a Zn-5 wt% Al eutectic alloy. In order to study the effect of microstructural changes on the tensile properties of eutectic Zn-Al binary alloy, Zn-Al and Zn-Al-Cu alloys were directionally solidified at a growth rate of..... More

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