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A Study on the Microstructures and Mechanical Properties of Ni-Cr-Mo-V Low Alloy Steels
Ni-Cr-Mo-V계 저합금강의 미세조직과 기계적 특성에 관한 연구
Mu Geun Jo, Seong Hyeon Ryu, Kyung Il Kim, Dong Eung Kim, Jung In Kim, Kyung Taek Kim, Sang Sub Kim, Gue Serb Cho
조무근, 류성현, 김경일, 김동응, 김정인, 김경택, 김상섭, 조규섭
Korean J. Met. Mater. 2022;60(4):251-262.   Published online 2022 Mar 28
DOI: https://doi.org/10.3365/KJMM.2022.60.4.251

Abstract
Ni-Cr-Mo-V steel alloys for high-speed railway brake discs were prepared to investigate the effect of alloying element contents on the microstructure and mechanical properties. The Cr, Mo, Mn alloying elements were incorporated into the steel alloys, which contained low carbon content in the range 0.16 wt.% ~ 0.21 wt.% to..... More

                        
Tensile and Fatigue Characteristics of WC-20wt%Co Cemented Carbide with Sintering Methods
소결 방법에 따른 WC-20wt%Co 초경합금의 인장 특성 및 피로 수명
Seong Hyeon Ryu, Mu Geun Jo, Kyung Il Kim, Wooram Noh, Ik Je Hong, Kwang Hee Lee, Sang Sub Kim, Gue Serb Cho
류성현, 조무근, 김경일, 노우람, 홍익제, 이광희, 김상섭, 조규섭
Korean J. Met. Mater. 2022;60(3):227-236.   Published online 2022 Feb 8
DOI: https://doi.org/10.3365/KJMM.2022.60.3.227

Abstract
WC-Co cemented carbide has excellent mechanical properties and is widely used in many industrial applications including cold forging die and cutting tools. WC-Co cemented carbide is manufactured by liquid phase sintering (LPS), and a new sintering process for densification has been developed. In this study, cylindrical rod shaped tensile and..... More

                        
Effect of Microstructural Parameters on the Tensile Property of WC-12~22wt%Co Cemented Carbide
WC-12~22wt%Co 초경합금에서 미세조직 인자가 인장 성질에 미치는 영향
Seong Hyeon Ryu, Kyung Il Kim, Wooram Noh, Sang Sub Kim, Gue Serb Cho
류성현, 김경일, 노우람, 김상섭, 조규섭
Korean J. Met. Mater. 2021;59(3):201-208.   Published online 2021 Feb 19
DOI: https://doi.org/10.3365/KJMM.2021.59.3.201

Abstract
Cemented carbide is a kind of composite material in which fine particles of carbide are embedded into the matrix of a binder metal. It has a long service life because of its superior mechanical properties. In this study, the overall tensile behavior of a cemented carbide, WC-Co, was investigated by..... More

                           Cited By 1
Powder Metallurgy
Microstructure Changes of ZrO2/W/Mo Coating Layers on Graphite after Heat Treatment at 2100 ℃
용사 코팅한 ZrO2/W/Mo-Graphite 코팅층의 2100 ℃ 열처리 후 미세조직 변화에 관한 연구
Gyu Baek Ahn, Kyeong Hwan Choe, Sang Sub Kim, Gue Serb Cho
안규백, 최경환, 김상섭, 조규섭
Korean J. Met. Mater. 2016;54(8):559-565.   Published online 2016 Aug 5
DOI: https://doi.org/10.3365/KJMM.2016.54.8.559

Abstract
A tungsten coating was deposited onto a graphite substrate using the atmospheric plasma spraying (APS) technique. In order to increase the adhesion strength between the metallic tungsten(W) and graphite, a molybdenum (Mo) interlayer was pre-deposited onto the graphite surface by utilizing the APS technique. Also, after deposition of a APS-W..... More

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