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Corrosion Characteristics of Bronze Artifacts Excavated from the Songguk-ri site in Buyeo According to Alloy Ratio and Manufacturing Techniques During the Goryeo Dynasty
부여 송국리 유적 출토 고려시대 청동유물의 합금성분 및 제작기법에 따른 부식 특성
Jun Hyuk Jang, Kwang Yong Chung
장준혁, 정광용
Korean J. Met. Mater. 2022;60(5):400-408.   Published online 2022 Apr 22
DOI: https://doi.org/10.3365/KJMM.2022.60.5.400

Abstract
A comprehensive analysis of the corrosion characteristics of excavated bronze artifacts was conducted according to their alloy ratio and microstructure. Corroded by various factors, which resulted in different corrosion characteristics. Among these, corrosion may occur in the excavated bronze due to the difference in the alloy ratio, which is an..... More

                        
A Study on Graphene Structure Control Using Ammonia Gas for a Highly Sensitive Pressure Sensor
암모니아를 이용한 그래핀 구조 제어 및 고감도 압력 센서로의 적용
Yeon Wook Jung, Seung Geun Jo, Hae-In Moon, Young Won Kim, Yujin Shin, Gil-Ryeong Park, Jung Woo Lee
정연욱, 조승근, 문해인, 김영원, 신유진, 박길령, 이정우
Korean J. Met. Mater. 2022;60(3):206-212.   Published online 2022 Feb 8
DOI: https://doi.org/10.3365/KJMM.2022.60.3.206

Abstract
Graphene has been used in various fields because of its excellent mechanical, optical, electrical, and thermal properties. However, its intrinsic low sensitivity to pressure limits its sensor applications. To overcome this drawback, many researchers have tried to improve the sensitivity by controlling the defects on the graphene, but have yet..... More

                           Cited By 1
Effect of Repeated Repair Welding on the Mechanical Properties and Pitting Corrosion Resistance of Super Duplex Stainless Steel
슈퍼듀플렉스 스테인리스강의 반복 수정용접이 기계적 물성과 공식저항성에 미치는 영향
Yusung Kim, Seongkil Nam, Myeonghwan Choi, Namhyun Kang
김유성, 남성길, 최명환, 강남현
Korean J. Met. Mater. 2022;60(2):114-123.   Published online 2022 Jan 12
DOI: https://doi.org/10.3365/KJMM.2022.60.2.114

Abstract
The study investigated the effect of repeated repair welding on the mechanical properties and pitting corrosion resistance of 25% Cr super duplex stainless steels (UNS S32750). The test coupons were prepared by gas tungsten arc welding (GTAW) with ER2594 filler metal and repaired 3-times at the same weld locations, where..... More

                        
Improving the Corrosion Resistance of AISI 316L Steel for Semiconductor Piping by Controlled Delta-Ferrite Content
Young Woo Seo, Chan Yang Kim, Bo Kyung Seo, Won Sub Chung
Korean J. Met. Mater. 2022;60(1):46-52.   Published online 2021 Dec 10
DOI: https://doi.org/10.3365/KJMM.2022.60.1.46

Abstract
This study evaluated changes in delta-ferrite content depending on the preheating of AISI 316L stainless steel. We also determined the reasons for the variation in delta-ferrite content, which affects corrosion resistance. Changes in delta-ferrite content after preheating was confirmed using a Feritscope, and the microstructure was analyzed using optical microscopy..... More

                        
Effect of Minor Alloying Elements (C, Ni, Cr, Mo) on the Long-Term Corrosion Behaviors of Ultrahigh-Strength Automotive Steel Sheet in Neutral Aqueous Environment
자동차용 초고강도급 강재 내 미량 첨가된 합금원소 (C, Ni, Cr 및 Mo)가 중성 수용액 환경 내 장기 부식거동에 미치는 영향
Hye Rin Bang, Jin-seong Park, Hwan Goo Seong, Sung Jin Kim
방혜린, 박진성, 성환구, 김성진
Korean J. Met. Mater. 2022;60(1):35-45.   Published online 2021 Dec 10
DOI: https://doi.org/10.3365/KJMM.2022.60.1.35

Abstract
This study examined the effects of minor alloying elements (C, Ni, Cr, and Mo) on the long-term corrosion behaviors of ultrahigh-strength automotive steel sheets with a tensile strength of more than 1800 MPa. A range of experimental and analytical results showed that the addition of Ni, Cr, and Mo decreased..... More

                        
Effects of Si and Sn Contents and Heat-Treatment Temperature on the Corrosion Behavior of AISI 439 Ferrite Stainless Steel
Chan Yang Kim, Do hyung Kim, Won sub Chung
Korean J. Met. Mater. 2022;60(1):26-34.   Published online 2021 Dec 10
DOI: https://doi.org/10.3365/KJMM.2022.60.1.26

Abstract
This study was conducted to evaluate the corrosion resistance and optimize the heat-treatment process of AISI 439 ferrite stainless steel silicon and tin alloys with reduced chromium. The microstructure of the specimens and deposition under each condition were analyzed. The production of oxide films was compared based on the thickness..... More

                        
Electrochemical Corrosion Resistance and Electrical Conductivity of Three-Dimensionally Interconnected Graphene-Reinforced Cu Composites
Xue Li, Ateeq Ahmed, Byung-Sang Choi
Korean J. Met. Mater. 2021;59(11):821-828.   Published online 2021 Oct 28
DOI: https://doi.org/10.3365/KJMM.2021.59.11.821

Abstract
A three-dimensionally interconnected graphene-reinforced Cu (3Di Gr-Cu) composite was synthesized using a simple two-step process technique which involves the mechanical compaction of micronsized Cu particles followed by chemical vapor deposition (CVD) at 995 ℃. The microstructural properties of pure Cu and the 3Di Gr-Cu composite were investigated by optical..... More

                           Cited By 1
Development of PosMAC<sup></sup> Steel and Its Application Properties
고내식 합금도금 PosMAC® 강판의 개발과 응용 특성
Il-Ryoung Sohn, Tae-Chul Kim, Gwang-Il Ju, Myung-Soo Kim, Jong-Sang Kim
손일령, 김태철, 주광일, 김명수, 김종상
Korean J. Met. Mater. 2021;59(9):613-623.   Published online 2021 Aug 4
DOI: https://doi.org/10.3365/KJMM.2021.59.9.613

Abstract
PosMAC® is a hot dipping Zn-Mg-Al coated steel sheet developed by POSCO. PosMAC®3.0 shows excellent anti-corrosion performance and is suitable for construction and solar energy systems in severe corrosive environments. PosMAC®1.5 has a superior surface quality and is preferred for automotive and home appliances. The advanced anti-corrosion properties of PosMAC®..... More

                        
Influences of Heat Treatment on the Thermal Diffusivity and Corrosion Characterization of Al-Mg-Si alloy
Al-Mg-Si 합금에서 열처리가 열확산도와 부식특성에 미치는 영향
Yu-Mi Kim, Se-Weon Choi, Young-Chan Kim, Chang-Seog Kang
김유미, 최세원, 김영찬, 강창석
Korean J. Met. Mater. 2021;59(8):582-588.   Published online 2021 Jul 5
DOI: https://doi.org/10.3365/KJMM.2021.59.8.582

Abstract
The effect of the heat treatment on the Mg2Si phase in Al-Mg-Si alloy was investigated by a laser flash apparatus (LFA), Differential scanning calorimetry (DSC) and corrosion test. The alloy samples were solution treated at 590 oC for a half hour followed by warm water quenching, and then aged in..... More

                        
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

Abstract
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

                        
Corrosion Behaviors of Super Austenitic Stainless Steel Weld Joints in the As-Welded and Post Weld Heat Treated States
슈퍼 오스테나이트계 스테인리스강 (UNS S31254)의 용접 및 용접 후 열처리 상태에서의 부식거동
Dong min Cho, Jin-seong Park, Won Ki Jeong, Seung Gab Hong, Sung Jin Kim
조동민, 박진성, 정원기, 홍승갑, 김성진
Korean J. Met. Mater. 2021;59(6):374-383.   Published online 2021 May 26
DOI: https://doi.org/10.3365/KJMM.2021.59.6.374

Abstract
The corrosion behaviors of a combined weld (plasma, gas tungsten arc) joint in a super austenitic stainless steel pipe were investigated using a range of experimental and analytical methods. To ensure superior corrosion resistance, a Ni-based super alloy (Inconel 625) was employed as the welding material only in the gas..... More

                           Cited By 1
Study on a Superhydrophobic Stainless Steel (SUS 304) Surface to Enhance Corrosion Resistance
내식성 향상을 위한 기능성 초발수 스테인리스 스틸 (SUS 304) 표면 연구
Youngju Park, Chanyoung Jeong
박영주, 정찬영
Korean J. Met. Mater. 2021;59(4):217-222.   Published online 2021 Mar 24
DOI: https://doi.org/10.3365/KJMM.2021.59.4.217

Abstract
Stainless steel is a metal with excellent workability, economy, and corrosion resistance, so it is used in various industrial applications including the marine, machinery, electronic parts, piping, power generation, and nuclear power fields. However, in contaminated environments such as marine and gas pipelines, stainless steel has problems, including surface aging..... More

                           Cited By 2
Simultaneous Improvement in the Corrosion Resistance and Visible Transparency of ZnO/Cu/ZnO Transparent Heaters with Reactively Sputtered Al<sub>2</sub>O<sub>3</sub> Layers
반응성 스퍼터링법으로 제조된 Al2O3 막을 이용한 ZnO/Cu/ZnO 투명 히터의 내식성과 투과도 개선 연구
Geumhyuck Bang, Dooho Choi
방금혁, 최두호
Korean J. Met. Mater. 2021;59(3):155-161.   Published online 2021 Feb 19
DOI: https://doi.org/10.3365/KJMM.2021.59.3.155

Abstract
In this study, we report a methodology that simultaneously improved the corrosion resistance and visible transparency of ZnO/Cu/ZnO transparent heaters with the addition of reactively sputtered Al2O3 layers. To assess corrosion resistance, ZnO and Al2O3 layers with thicknesses in the range of 0-20 nm were deposited onto 20 nm-thick Cu..... More

                           Cited By 2
Integrity Assessment of Obsolete Thermal Storage Tank in District Heating System
지역난방 노후 축열조의 부식 건전성 평가 및 고찰
Daeho Yun, Hobyung Chae, Heesan Kim, Jung-Gu Kim, Woo Cheol Kim, Tae Baek Ha, Jaehyuk Jang, Joon Cheol Jeong, Soo Yeol Lee
윤대호, 채호병, 김희산, 김정구, 김우철, 하태백, 장재혁, 정준철, 이수열
Korean J. Met. Mater. 2020;58(10):693-702.   Published online 2020 Oct 5
DOI: https://doi.org/10.3365/KJMM.2020.58.10.693

Abstract
The thermal storage tank in a district heating system is a component that stores excess heat during normal operation and releases the stored heat to increase the efficiency of the system, when the heat source is stopped or additional demands occur. Recently, an obsolete thermal storage tank was dismantled for..... More

                        
Hydrogen Induced Cracks in Stainless Steel 304 in Hydrogen Pressure and Stress Corrosive Atmosphere
수소가압 및 응력부식 분위기에서 스테인레스강 SS304의 수소취성균열
Byung Hak Choe, Sang Woo Lee, Jong Kee Ahn, Jinhee Lee, Tae Woon Lim
최병학, 이상우, 안종기, 이진희, 임태운
Korean J. Met. Mater. 2020;58(10):653-659.   Published online 2020 Oct 5
DOI: https://doi.org/10.3365/KJMM.2020.58.10.653

Abstract
The phenomena of hydrogen induced cracking (HIC) in 304 stainless steels was considered in a hydrogen pressure and stress corrosive atmosphere. Microstructures with chloride pits and stress corrosion cracks around the HIC were analyzed by SEM/EDS. Abnormal phase transformations induced by the hydrogen were analyzed using TEM and diffraction. In..... More

                           Cited By 2
Corrosion Behaviors of the Eutectic Structure in Zn-Al-Mg Alloy Coated Steel in Chloride Containing Aqueous Environment
염수환경 내 Zn-Al-Mg 합금도금강재의 공정조직 부식거동
Jae-Won Lee, Se-Young Oh, Bora Park, Min-Suk Oh, Sung Jin Kim
이재원, 오세영, 박보라, 오민석, 김성진
Korean J. Met. Mater. 2020;58(9):610-616.   Published online 2020 Aug 19
DOI: https://doi.org/10.3365/KJMM.2020.58.9.610

Abstract
To clearly understand the effect of the eutectic structure in the Zn-Al-Mg alloy coating on the corrosion behaviors in chloride containing aqueous environments, a bulk Zn-MgZn2 sample was fabricated by diffusion bonding process, and a variety of experiments, such as electrochemical polarization and galvanic corrosion measurements, salt spray tests, and..... More

                           Cited By 2
Study on Hydrogen Diffusion and Sulfide Stress Cracking Behaviors of Simulated Heat-Affected Zone of A516-65 Grade Pressure Vessel Carbon Steel
A516-65급 압력용기용 강재의 용접모사 열처리를 통한 용접열영향부의 수소확산 및 황화물응력균열 거동 연구
Dong Min Cho, Jin-seong Park, Jin Woo Lee, Sung Jin Kim
조동민, 박진성, 이진우, 김성진
Korean J. Met. Mater. 2020;58(9):599-609.   Published online 2020 Aug 13
DOI: https://doi.org/10.3365/KJMM.2020.58.9.599

Abstract
Hydrogen diffusion and sulfide stress cracking of simulated heat-affected zone (HAZ) of A516- 65 grade steel were examined using an electrochemical permeation technique, glycerin volumetric method, and constant loading method. HAZ samples were fabricated using a metal thermal cycle simulator with a welding heat input of 20, 35, and 50..... More

                           Cited By 4
Analysis of Stress Corrosion Cracking Propagation of SS304 Stainless Steel Using Crack Shape and Etch Pits
스테인리스강 SS304의 균열 형상과 에치 피트를 이용한 응력부식균열 전파 기구 해석
Byung Hak Choe, Sang Woo Lee, Jong Kee Ahn, Jinhee Lee
최병학, 이상우, 안종기, 이진희
Korean J. Met. Mater. 2020;58(9):583-589.   Published online 2020 Aug 19
DOI: https://doi.org/10.3365/KJMM.2020.58.9.583

Abstract
Austenitic stainless steel SS304 is vulnerable to Cl atmosphere SCC (stress corrosion crack). In this study, SCC phenomena related to stress and corrosion composition were analyzed to identify the mechanism for SCC initiation and propagation in SS304. The microstructure and mechanical properties resulting from crack propagation were analyzed by OM,..... More

                           Cited By 2
A Study on the Corrosion and Microstructure Characteristics of Early Iron Age Bronze Swords Excavated from Sinpung Site in Wanju, Jeollabuk-Do, Republic of Korea
전북 완주 신풍유적 출토 초기철기시대 동검의 부식 및 제작특성
Min Kyeong Jang, Nam Chul Cho
장민경, 조남철
Korean J. Met. Mater. 2020;58(7):472-479.   Published online 2020 Jul 5
DOI: https://doi.org/10.3365/KJMM.2020.58.7.472

Abstract
The subject of this study was a bronze sword excavated from the early Iron Age area of Sinpung site in Wanju. SEM-EDS, FE-EPMA and Raman Micro-Spectroscopy analysis methods were applied to investigate the manufacturing techniques and corrosion characteristics. The results of the analysis indicated a casting structure composed of both..... More

                           Cited By 2
Corrosion Characteristics of Plasma Electrolytic Oxidation Treated AZ31 Magnesium Alloy with an Increase of the Coating Thickness
AZ31 마그네슘 합금의 플라즈마전해 산화막 두께 성장에 따른 내식특성
Boeun Choi, Wonsub Chung, Yonghwan Kim
최보은, 정원섭, 김용환
Korean J. Met. Mater. 2020;58(2):87-96.   Published online 2020 Jan 8
DOI: https://doi.org/10.3365/KJMM.2020.58.2.87

Abstract
The growth of the PEO coating with processing time on an AZ31B magnesium alloy in a dilute alkaline electrolyte containing silicate and the corrosion characteristics according to its thickness were investigated. The oxide film grew a porous outer layer mainly consisting of silicate with the spark discharge phenomenon from the..... More

                           Cited By 1
Corrosion Behavior of SiC and Si<sub>3</sub>N<sub>4</sub> by Alkali Gas
알칼리 가스에 의한 SiC 및 Si3N4의 침식 거동
Ju-Hun Kim, Kang-Min Kim, Ji-A Lee, Jeong-il Kim, Jeong-Whan Han
김주훈, 김강민, 이지아, 김정일, 한정환
Korean J. Met. Mater. 2020;58(1):17-25.   Published online 2019 Dec 12
DOI: https://doi.org/10.3365/KJMM.2020.58.1.17

Abstract
Studies of effective furnace cooling technology and refractory materials have extended the lifetime of a blast furnace to more than 15 years. On the other hand, the replacement of refractories in the blast furnace results in considerable cost and time loss for stopping the blast furnace operation. Various kinds of..... More

                        
Optimization of Electrochemical Variables of Pulse-Reverse Electroplating in Trivalent Chromium Bath to Enhance the Corrosion Resistance of Chromium Film
3가 크롬 도금욕에서 펄스 도금의 전기화학적 변수 최적화를 통한 크롬 도금막의 내식성 향상 연구
Chaewon Lim, Dongwook Lim, Bonil Ku, Sang Eun Shim, Sung-Hyeon Baeck
임채원, 임동욱, 구본일, 심상은, 백성현
Korean J. Met. Mater. 2019;57(10):641-647.   Published online 2019 Sep 6
DOI: https://doi.org/10.3365/KJMM.2019.57.10.641

Abstract
Electroplating chromium films in a trivalent chromium bath has been extensively investigated as a replacement for the conventional hexavalent chromium bath. However, commercialization of the trivalent chromium method has been hindered because the resulting chromium films exhibit inferior mechanical properties compared to hexavalent chromium coated film. In this study, we..... More

                        
Effect of Cr and N on Stress Corrosion Cracking Behavior of Fe-18Mn Steel
Fe-18Mn강의 응력부식균열 거동에 미치는 크롬과 질소의 영향
Heesoo Choi, Sumin Kim, Hyokyung Sung, Sung-Joon Kim, Sangshik Kim
최희수, 김수민, 성효경, 김성준, 김상식
Korean J. Met. Mater. 2019;57(10):624-631.   Published online 2019 Sep 6
DOI: https://doi.org/10.3365/KJMM.2019.57.10.624

Abstract
High-Mn steels developed for offshore industries require good resistance to stress corrosion cracking (SCC) in seawater. Elements like Cr and N are often added to improve the resistance to SCC. In this study, the SCC behavior of Fe18Mn3Cr0.1N and Fe19Mn19Cr0.6N steels in artificial seawater was examined. Slow strain rate tests..... More

                           Cited By 4
Effect of Ni and Cu Addition on Corrosion Behaviors of Pre-Oxidized Ultra-Strong Steel for Automotive Applications
Ni 및 Cu 첨가가 고온 산화된 자동차용 초고강도 강재의 부식 거동에 미치는 영향
Seung Min Ryu, Hwan Goo Seong, Jeong Kil Kim, Joong-Ki Hwang, Man Jae Lee, Min-Suk Oh, Sung Jin Kim
류승민, 성환구, 김정길, 황중기, 이만재, 오민석, 김성진
Korean J. Met. Mater. 2019;57(6):343-351.   Published online 2019 May 16
DOI: https://doi.org/10.3365/KJMM.2019.57.6.343

Abstract
The incomplete elimination of oxide scale formed during the normalizing process can result in severe degradation of the surface and mechanical properties of ultra-strong steels. This study revealed that the formation of oxide scale was highly dependent upon the alloying elements Ni and Cu. Ni-bearing steel showed a much higher..... More

                           Cited By 2
Corrosion of Hot-dip Aluminized 9Cr-1Mo Steel in N2/0.1%H2S Gas
Muhammad Ali Abro, Junhee Hahn, Dong Bok Lee
Korean J. Met. Mater. 2019;57(4):236-244.   Published online 2019 Apr 5
DOI: https://doi.org/10.3365/KJMM.2019.57.4.236

Abstract
ASTM P91 steel (viz. 9Cr-1Mo steel) was hot-dip aluminized to form a ~70 μm thick coating, and was then corroded in N2/0.1%H2S gas for 50 h at 800 and 900 ºC, to study the effect of aluminizing on the corrosion resistance of P91 steel in highly corrosive H2S environments. Before..... More

                           Cited By 1
Effects of Added Cr and Ni on the Resistance of -Iron Surface to Cl<sub>2</sub> Gas Corrosion
크롬과 니켈 첨가가 α-Fe 표면의 염소 가스 부식 특성에 미치는 영향
Jiwoong Kim, MyungJae Kim, Chang Yul Seo, Jungho Ryu, Taegong Ryu, Hye-Jin Hong, Yong Jae Suh
김지웅, 김명재, 서창열, 류정호, 류태공, 홍혜진, 서용재
Korean J. Met. Mater. 2019;57(2):108-114.   Published online 2019 Feb 5
DOI: https://doi.org/10.3365/KJMM.2019.57.2.108

Abstract
As energy generation by recycling biomass has become increasingly attractive, research on biomass recycling has focused on improving operational efficiency. To develop a new material composition for the inner wall of a biomass boiler, we investigated the effect of Cr and Ni addition on the resistance of the α-iron (100)..... More

                           Cited By 1
Corrosion Resistance and Adhesion of Paint Coating Film on Zn-Mg-Al Hot-Dip Galvanized Steel Sheets
아연-마그네슘-알루미늄 합금도금강판의 도장 내식성 및 밀착성
Jae-Won Lee, Bora Park, Sung Jin Kim
이재원, 박보라, 김성진
Korean J. Met. Mater. 2019;57(2):77-83.   Published online 2019 Jan 9
DOI: https://doi.org/10.3365/KJMM.2019.57.2.77

Abstract
Zn-Al-Mg alloy galvanized steel sheets have excellent corrosion resistance and improved cut-edge corrosion resistance. Most of the galvanized steel sheets used for outdoor applications are coated again on the galvanizing layer, or after a plastic film is laminated. As the corrosion products formed by the corrosion of Zn accumulate over..... More

                           Cited By 5
Resistance to Stress Corrosion Cracking of High-Strength 7xxx Series Aluminum Alloys in 3.5% NaCl Solution
항공용 고강도 7xxx계 알루미늄 합금의 3.5% NaCl 수용액에서의 응력부식균열 저항성
Yurim Lee, Heesoo Choi, Soojin Ahn, Cheoljoo Lee, Sangshik Kim
이유림, 최희수, 안수진, 이철주, 김상식
Korean J. Met. Mater. 2018;56(10):708-717.   Published online 2018 Oct 5
DOI: https://doi.org/10.3365/KJMM.2018.56.10.708

Abstract
For proper maintenance and inspection scheduling of aircraft, it is extremely important to measure the resistance to stress corrosion cracking (SCC) behavior of aluminum alloys used for aircraft structures. The SCC resistances of high-strength 7xxx-series aluminum alloys, including 7050-T7451, 7475-T7351 and 7140-T7451, were evaluated along longitudinal (L) and transverse (T)..... More

                           Cited By 2
Analysis on Variations in Underwater Electromagnetic Signals of a Surface Ship as Varying Placement of ICCP Anodes
ICCP 양극 배치 변화에 따른 수중 전자기 신호 변화 분석
Sangkyu Lee, Hyun-Ju Jung, Chang-Seob Yang
이상규, 정현주, 양창섭
Korean J. Met. Mater. 2018;56(8):628-634.   Published online 2018 Aug 5
DOI: https://doi.org/10.3365/KJMM.2018.56.8.628

Abstract
The impressed current cathodic protection (ICCP) is widely used for preventing galvanic corrosion and it strongly influences the underwater electromagnetic signals of a surface ship. For military use, the signals should be reduced to avoid threats such as modern naval weapons triggered by the signals. We analyzed the underwater electric..... More

                        
Effect of Carbon Contents on Corrosion and Hydrogen Diffusion Behaviors of Ultra-Strong Steels for Automotive Applications
탄소함량이 자동차용 초고강도 철강소재의 부식 및 수소 확산 거동에 미치는 영향
Eun Hye Hwang, Hwan Goo Seong, Sung Jin Kim
황은혜, 성환구, 김성진
Korean J. Met. Mater. 2018;56(8):570-579.   Published online 2018 Aug 5
DOI: https://doi.org/10.3365/KJMM.2018.56.8.570

Abstract
Recently developed ultra-strong GIGA STEEL exhibites superior mechanical properties, with a high tensile strength of more than 1.5 GPa and good impact toughness. Nevertheless, its application to auto parts has been severely restricted, mainly due to a substantial reduction in the resistance to hydrogen embrittlement (HE) induced by aqueous corrosion...... More

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