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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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나노/마이크로 패턴 제작을 위한 급속열처리가 구리 박막의 기계 가공 특성에 미치는 영향
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황해인, 김수연, 조인호, 이승훈, 박아현, 김정환
Korean J. Met. Mater.
2024;62(9):740-747. Published online 2024 Sep 5
DOI:
https://doi.org/10.3365/KJMM.2024.62.9.740
Abstract
The semiconductor and display industries employ microfabrication and high-density technology to enhance the performance of IT products. Current micro-patterning methods primarily rely on photolithography. However, photolithography is a complex and expensive process, with limited freedom of pattern design, and involves dry etching methods that use toxic substances, which are harmful.....
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Twin wire arc spray 공정을 통해 제작된 Fe계 비정질 합금 코팅의 염수 환경 노출에 대한 연구
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권한솔, 강용진, 유연우, 김도현, 박영진, 남욱희, 변응선
Korean J. Met. Mater.
2024;62(8):613-623. Published online 2024 Jul 31
DOI:
https://doi.org/10.3365/KJMM.2024.62.8.613
Abstract
Fe-based amorphous alloys are promising structural materials that have a disordered lattice structure and metastable state. Due to their advanced properties, including high hardness, high elastic limit, improved wear and corrosion resistance, Fe-based amorphous alloys have a great potential for protective materials in harsh industrial fields. Twin wire arc spray.....
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SA508 Gr.1A 저합금강의 기계적특성에 미치는 이상영역열처리 및 Pre-tempering 열처리의 영향
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현세미, 홍석민, 김민철, 김종민, 손석수
Korean J. Met. Mater.
2024;62(8):593-601. Published online 2024 Jul 31
DOI:
https://doi.org/10.3365/KJMM.2024.62.8.593
Abstract
To apply the leak-before-break (LBB) concept to the main steam line piping of nuclear power plants, the use of SA508 Gr.1A low-alloy steel is being considered. To increase the LBB safety margin, it is essential to improve the strength and toughness of the material. In this study, intercritical heat treatment.....
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고에너지 볼 밀링을 이용한 분산강화된 Fe-TaC 합금분말의 소결거동 및 기계적 특성평가
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박범순, 이정한, 박재철, 홍성길, 박현국
Korean J. Met. Mater.
2024;62(3):163-170. Published online 2024 Feb 28
DOI:
https://doi.org/10.3365/KJMM.2024.62.3.163
Abstract
In this study, a high-melting point element, tantalum carbide (TaC) was added to improve the mechanical properties and the oxidation/corrosion resistance of Fe. The Fe-TaC composites were synthesized by high energy ball milling for the mechanical alloying of the non-equilibrium phase (Fe-Ta) and the homogeneous dispersion of TaC. Fe-TaC composite.....
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Web of Science 1
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Twin wire arc spray 용사코팅 공정을 통해 제작된 미끄럼 방지 코팅의 열적 특성 및 고온노출 거동 연구
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권한솔, 박영진, 남욱희, 변응선
Korean J. Met. Mater.
2023;61(9):642-651. Published online 2023 May 14
DOI:
https://doi.org/10.3365/KJMM.2023.61.9.642
Abstract
Conventional non-skid coatings for marine construction contain polymeric materials. These materials are generally susceptible to high temperature environments because of their low thermal conductivity and thermal resistance. A metal-based non-skid coating has great potential for high temperature applications, yet, there has only been limited research. In this study, twin wire.....
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Web of Science 3
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CuCrFeMnNi 고엔트로피 합금의 열처리에 따른 미세조직 및 기계적 물성 변화 연구
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송호섭, 송성호, 조재영, 송기안
Korean J. Met. Mater.
2023;61(6):449-457. Published online 2023 May 18
DOI:
https://doi.org/10.3365/KJMM.2023.61.6.449
Abstract
High entropy alloys (HEAs) are defined as a multi-element alloy including more than 4 elements with near equi-atomic percentage. In general, the configurational entropy of the HEAs is known to be sufficient to stabilize a single solid solution, such as body-centered cubic (BCC), face-centered cubic (FCC) and hexagonal-closed pack (HCP)......
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Web of Science 3
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Twin wire arc spray 용사코팅 공정을 통해 제작된 내부식성 Al 및 Al-3%Ti 미끄럼 방지 코팅의 비교 연구
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권한솔, 박영진, 남욱희, 이은경, 변응선
Korean J. Met. Mater.
2023;61(4):242-251. Published online 2023 Mar 22
DOI:
https://doi.org/10.3365/KJMM.2023.61.4.242
Abstract
To ensure the lifetime of marine constructions and the safety of workers and pedestrians, corrosion protective non-skid coating is an effective solution. However, the conventional polymer-based coating has some limitations. In this study, newly-suggested Al and Al-3%Ti coatings were deposited on high strength low alloyed steel substrate using twin wire.....
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Web of Science 3
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분말 사출 성형된 Fe-Cr-B/316L 스테인레스강 복합재료의 미세조직과 기계적 특성에 미치는 Fe-Cr-B의 영향
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김영균, 주연아, 윤태식, 이기안
Korean J. Met. Mater.
2023;61(1):9-17. Published online 2022 Dec 28
DOI:
https://doi.org/10.3365/KJMM.2023.61.1.9
Abstract
Stainless steel-based composites (SMCs) mixed with 316L stainless steel powder and Fe-Cr-B based M alloys powder ed M) powder were manufactured using the powder injection molding (PIM) process, and their microstructure and mechanical properties were investigated. To examine the effect of M content on the properties of SMCs, the M.....
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Web of Science 1
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고압비틀림 공정 처리된 Al7068 합금의 기계적 특성 및 미세조직 변화
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오주희, 손수정, 김형섭, 설재복, 성효경, 김정기
Korean J. Met. Mater.
2023;61(1):1-8. Published online 2022 Dec 28
DOI:
https://doi.org/10.3365/KJMM.2023.61.1.1
Abstract
The combination of severe plastic deformation, deformational heat, and frictional heat generated during the high-pressure torsion process has a great effect on microstructural evolutions, including grain refinement, dynamic recrystallization and recovery. In particular, the low melting temperature metallic alloys (e.g., aluminum and magnesium) also induce nano-precipitations in the matrix during.....
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Web of Science 5
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단일벽 탄소나노튜브와 다중벽 탄소나노튜브 사용에 따른 고분자 복합체의 기계적, 전기적 물성
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강병호, 허오녕, 홍순국, 박성훈
Korean J. Met. Mater.
2022;60(9):694-700. Published online 2022 Aug 30
DOI:
https://doi.org/10.3365/KJMM.2022.60.9.694
Abstract
To manufacture composites with required properties, it is extremely important to select an appropriate filler. Carbon-based nano materials such as carbon black, graphene and carbon nanotube (CNT) have been extensively investigated as reinforcing and conducting fillers. Because of their high aspect ratio coupled with superior physical properties, 1-dimensional CNTs are.....
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Web of Science 7
Crossref 7
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Fe-17Mn-5Si-5Cr 형상기억합금의 형상복원거동 및 기계적 특성에 미치는 Ni, Ti 및 C의 영향
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김도형, 김용환, 옥정중, 이정훈, 박찬희, 이욱진, 박용호
Korean J. Met. Mater.
2020;58(10):660-671. Published online 2020 Oct 5
DOI:
https://doi.org/10.3365/KJMM.2020.58.10.660
Abstract
Fe-Mn-Si based shape memory alloy is a new functional material that can be used to apply prestress to civil and structural components such as concrete structures. In this study, the effects of alloying elements Ni, C and Ti on the mechanical and shape memory properties of the alloy were investigated.....
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Web of Science 7
Crossref 7
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고전류밀도에서 유기첨가제에 의한 구리 전착층의 전기적 특성 변화
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우태규, 박일송
Korean J. Met. Mater.
2020;58(1):41-48. Published online 2019 Dec 12
DOI:
https://doi.org/10.3365/KJMM.2020.58.1.41
Abstract
Electroplating has many economic advantages in producing copper foils. The easiest way to manufacture electroplated copper foil with various properties is to add appropriate additives. This study evaluated the surface properties, mechanical and electrical properties of copper foil electroplated in electrolytes containing the leveler JGB (Janus Green B). When the.....
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Web of Science 8
Crossref 6
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Korean J. Met. Mater.
2019;57(12):755-763. Published online 2019 Dec 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.12.755
Abstract
Rails are subjected to repeated stresses due to wheel-rail contact during train service. Rails under stress conditions undergo microstructural changes, and these cause degradations of the structural integrity and lifetime of rails. In this study, three different rails (newly-manufactured rail, newly-manufactured head-hardened rail, and worn (used) rail) were compared to.....
More
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생체의료 임플란트용 개기공 티타늄 다공체 제조
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김경욱, 장진만, 김용대, 이재철, 이원식
Korean J. Met. Mater.
2019;57(10):679-687. Published online 2019 Sep 6
DOI:
https://doi.org/10.3365/KJMM.2019.57.10.679
Abstract
Open-pored metal foams have been partly used for orthopedic or dental applications because of their good bone ingrowth behavior and low elastic modulus. In this paper, we report a method that can produce open-pored Ti foams using a technique that combines the powder injection molding process and feedstocks containing expandable.....
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Web of Science 3
Crossref 3
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단일 크기와 이중 크기의 탄화규소 입자를 이용한 액상소결 탄화규소의 기계적 특성
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이준엽, 이상필, 이진경, 이문희, 황승국
Korean J. Met. Mater.
2019;57(1):60-66. Published online 2018 Dec 14
DOI:
https://doi.org/10.3365/KJMM.2019.57.1.60
Abstract
Both the mechanical properties and probability distribution of liquid phase sintered SiC (LPS-SiC) materials were investigated, based on a detailed analysis of their microstructures. In particular, the effect of the starting sizes of SiC particles on the characterization of LPS-SiC materials was evaluated. LPS-SiC materials were fabricated with a constant.....
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Web of Science 2
Crossref 2
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희토류 원소계 고엔트로피 벌크 비정질 합금 개발
J
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김진연, 오현석, 김진우, 박은수
Korean J. Met. Mater.
2018;56(1):14-25. Published online 2018 Jan 1
DOI:
https://doi.org/10.3365/KJMM.2018.56.1.14
Abstract
High entropy alloys (HEAs) are a relatively new class of metallic materials. HEAs lead to high mixing entropy and the formation of a simple solid solution rather than intermediate phases. This might be explained by the fact that the configurational entropy outweighs the enthalpy of formation of intermetallic compounds. Meanwhile,.....
More
Crossref 1
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펄스통전활성 소결법 적용 WC 합금 소결체 제조 및 기계적 특성 평가
J
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이정한, 박현국, 장준호, 홍성길, 오익현
Korean J. Met. Mater.
2017;55(11):783-789. Published online 2017 Oct 31
DOI:
https://doi.org/10.3365/KJMM.2017.55.11.783
Abstract
In this study, planetary ball milled WC-5 wt%Co powders were sintered using the pulsed current activated sintering (PCAS) process. With this process, fully densified hard materials were obtained in a shorter time than conventional processes such as a HP and HIP. The particle sizes of the planetary ball milled WC.....
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Crossref 1
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CoCrFeMnNi 고엔트로피합금 주조재의 미세조직 및 기계적 특성
M
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강민주, 원종우, 임가람, 박상협, 서성문, 나영상
Korean J. Met. Mater.
2017;55(10):732-738. Published online 2017 Sep 28
DOI:
https://doi.org/10.3365/KJMM.2017.55.10.732
Abstract
In this study, we made large-scale ingots of CoCrFeMnNi high entropy alloy by vacuum induction melting. The as-cast CoCrFeMnNi high entropy alloy contained a high proportion of columnar structures with a few equiaxed grains, and showed single phase fcc solid solutions without macro segregation and low interstitial levels. The tensile.....
More
Crossref 4
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Mg-RE계 고온용 합금의 특성과 최근 연구 동향
S
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남수우
Korean J. Met. Mater.
2017;55(4):213-221. Published online 2017 Apr 6
DOI:
https://doi.org/10.3365/KJMM.2017.55.4.213
Abstract
For the applications in automotive, aircraft, aerospace, and electronic industries, the lightest structural Mg alloys have received much attention since 2000. There has been some progress for the improvement of the mechanical properties such as room temperature strength, formability and mechanical anisotropy. However, the high temperature strength of Mg alloys.....
More
Crossref 4
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불연속 석출된 Al-Zn 합금의 상온 및 극저온 인발에 따른 미세조직 변화가 기계적 특성에 미치는 영향
M
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김민수, 한승전, 이재현, 임성환, 안지혁, 김상식, 김광호
Korean J. Met. Mater.
2017;55(2):77-84. Published online 2017 Feb 2
DOI:
https://doi.org/10.3365/KJMM.2017.55.2.77
Abstract
In order to study the effect of microstructural change on the tensile properties of discontinuous precipitated Al-Zn binary alloy, four different Al-Zn alloys(25, 30, 35, 45 wt% Zn) were aged at 160 ℃ for different aging times(0, 5, 15, 30, 60, 120, 360 min) after being solution treated at 400.....
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Crossref 3
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혼합엔트로피 제어에 따른 단일 FCC 고용체 합금의 물성변화 분석
J
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이제인, 오현석, 김준혁, 박은수
Korean J. Met. Mater.
2017;55(1):1-9. Published online 2017 Jan 5
DOI:
https://doi.org/10.3365/KJMM.2017.55.1.1
Abstract
In the present study, we systematically investigated the effect of entropy of mixing (Δ
S
mix
) on the mechanical and thermal properties of single phase FCC solid solutions with multi-principal elements. An increase in Δ
S
mix
led to an increase in micro-hardness and a decrease in thermal conductivity (κ) due to severe lattice.....
More
Crossref 8
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5
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Wookjin Choi1, Min Ji Song1, Nam-Hyoung Lim2, and Soo Yeol Lee1,*
Abstract
Rails are subjected to repeated stresses due to wheel-rail contact during train service. Rails under stress conditions undergo microstructural changes, and these cause degradations of the structural integrity and lifetime of rails. In this study, three different rails (newly-manufactured rail, newly-manufactured headhardened rail, and worn (used) rail) were compared to...
More
M
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5
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Wookjin Choi1, Min Ji Song1, Nam-Hyoung Lim2, and Soo Yeol Lee1,*
Published online 1999 Nov 30
Abstract
Rails are subjected to repeated stresses due to wheel-rail contact during train service. Rails under stress conditions undergo microstructural changes, and these cause degradations of the structural integrity and lifetime of rails. In this study, three different rails (newly-manufactured rail, newly-manufactured headhardened rail, and worn (used) rail) were compared to...
More
M
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W
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d
e
d
5
0
N
R
a
i
l
Wookjin Choi1, Min Ji Song1, Nam-Hyoung Lim2, and Soo Yeol Lee1,*
Published online 1999 Nov 30
Abstract
Rails are subjected to repeated stresses due to wheel-rail contact during train service. Rails under stress conditions undergo microstructural changes, and these cause degradations of the structural integrity and lifetime of rails. In this study, three different rails (newly-manufactured rail, newly-manufactured headhardened rail, and worn (used) rail) were compared to examine the effects...
More
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Published online 1999 Nov 30
Abstract
Rails are subjected to repeated stresses due to wheel-rail contact during train service. Rails under stress conditions undergo microstructural changes, and these cause degradations of the structural integrity and lifetime of rails. In this study, three different rails (newly-manufactured rail, newly-manufactured head-hardened rail, and worn (used) rail) were compared to...
More
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Published online 1999 Nov 30
Abstract
Rails are subjected to repeated stresses due to wheel-rail contact during train service. Rails under stress conditions undergo microstructural changes, and these cause degradations of the structural integrity and lifetime of rails. In this study, three different rails (newly-manufactured rail, newly-manufactured head-hardened rail, and worn (used) rail) were compared to...
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Journal Impact Factor 1.1