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Tensile and Fatigue Properties of WC-20 wt%Co Cemented Carbides under Microstructural Variations
WC-20wt%Co 초경 합금의 미세 조직 변화에 따른 인장 및 피로 성질
Gue Serb Cho, Kyung Il Kim, Wooram Noh
조규섭, 김경일, 노우람
Korean J. Met. Mater. 2023;61(12):933-942.   Published online 2023 Nov 30
DOI: https://doi.org/10.3365/KJMM.2023.61.12.933

Abstract
WC-Co cemented carbide has excellent mechanical properties and is widely used in many industrial applications including cold forging dies and cutting tools. The tensile and fatigue properties of WC-20wt%Co cemented carbides with microstructural variations were investigated. Microstructure parameters such as Co binder content, WC particle size, binder mean free path,..... More

                
Influence of Elevated Temperature on the Mechanical and Microstructural Properties of Glass Fiber-Reinforced Polymers
Se Woong Lee, Seulgi Han, Okmin Park, Sang-il Kim, Sungmo Choi
Korean J. Met. Mater. 2023;61(10):800-806.   Published online 2023 Sep 25
DOI: https://doi.org/10.3365/KJMM.2023.61.10.800

Abstract
Glass fiber-reinforced polymers (GFRPs) have attracted significant attention as structural materials because of their high fatigue resistance, corrosion resistance, strength, and stiffness. This study examined the effect of elevated temperatures (150, 250, 350, and 450oC) on the microstructural and mechanical properties of GFRP plates. The number of bubbles increased as..... More

                   Crossref 1
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

                   Web of Science 5  Crossref 5
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

                   Web of Science 2  Crossref 3
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

                   Web of Science 3  Crossref 3
Influence of Nanosized AlN Powders on the Microstructure, Brazeability, and Tensile Properties of Al-based Filler for Low Temperature Al/Cu Dissimilar Brazing
Do Hyun Jung, Jae Pil Jung
Korean J. Met. Mater. 2018;56(9):664-673.   Published online 2018 Sep 5
DOI: https://doi.org/10.3365/KJMM.2018.56.9.664

Abstract
This study examined the influence of nanosized aluminum nitride (AlN) powders (0, 0.01, 0.05, 0.10, 0.30, and 0.50 wt%), on an Al4047-based filler metal. Nanosized AlN powders were dispersed uniformly into the filler metal by a mechanical mixing and melting route using a stainless steel propeller. The influences of nanosized..... More

                   Crossref 1
Effect of Pre-Straining on the High-Cycle Fatigue Properties of Hot-Rolled Steel Sheets for Automotive Structural Uses
자동차 구조용 열연강판의 고주기 피로 특성에 미치는 전변형 효과
Dong-Woog Ha, Chang-Yeol Jeong
하동욱, 정창열
Korean J. Met. Mater. 2018;56(3):177-186.   Published online 2018 Mar 6
DOI: https://doi.org/10.3365/KJMM.2018.56.3.177

Abstract
The drive towards weight reduction in the automotive industry has led to the use of high strength steel sheets for structural applications. Pressing and stamping are important processes in automotive production and result in additional straining on the vehicle body and chassis sheet material. It is therefore important to have..... More

    
Effect of Aluminum Welding Wire Mg Content on the Mechanical Properties of Al 5083 Alloy Weld Metal
Al 5083 합금 용접부의 기계적 물성에 미치는 Mg의 영향
Dongyoon Kim, Dongcheol Kim, Munjin Kang, Young-Min Kim
김동윤, 김동철, 강문진, 김영민
Korean J. Met. Mater. 2017;55(10):716-723.   Published online 2017 Sep 28
DOI: https://doi.org/10.3365/KJMM.2017.55.10.716

Abstract
A new aluminum welding wire with 0.8 wt% higher in Mg content was developed and compared with commercial welding wire of the 5000 series. The weldability of the Al5083 base material was evaluated using high current metal inert gas (MIG) welding, using the developed Al5183 and commercial Al5183 welding wire...... More

    
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